/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-word-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-10 22:26:26,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 22:26:26,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 22:26:26,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-10 22:26:26,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-10 22:26:26,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-10 22:26:26,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-10 22:26:26,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-10 22:26:26,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-10 22:26:26,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-10 22:26:26,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-10 22:26:26,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-10 22:26:26,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-10 22:26:26,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-10 22:26:26,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-10 22:26:26,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-10 22:26:26,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-10 22:26:26,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-10 22:26:26,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-10 22:26:26,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-10 22:26:26,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-10 22:26:26,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-10 22:26:26,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-10 22:26:26,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-10 22:26:26,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-10 22:26:26,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-10 22:26:26,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-10 22:26:26,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-10 22:26:26,747 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-02-10 22:26:26,776 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 22:26:26,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 22:26:26,776 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 22:26:26,776 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 22:26:26,777 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 22:26:26,777 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 22:26:26,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 22:26:26,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 22:26:26,778 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 22:26:26,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 22:26:26,778 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 22:26:26,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 22:26:26,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 22:26:26,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 22:26:26,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 22:26:26,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 22:26:26,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 22:26:26,779 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 22:26:26,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 22:26:26,779 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 22:26:26,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 22:26:26,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 22:26:26,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 22:26:26,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 22:26:26,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 22:26:26,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 22:26:26,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 22:26:26,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 22:26:26,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 22:26:26,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 22:26:26,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 22:26:26,781 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 22:26:26,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 22:26:26,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 22:26:26,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 22:26:26,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 22:26:26,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 22:26:26,963 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-10 22:26:26,963 INFO L275 PluginConnector]: CDTParser initialized [2022-02-10 22:26:26,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2022-02-10 22:26:27,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07aaa9815/4383f0fb42f04171990a3c18ebc0e56d/FLAG1359495d9 [2022-02-10 22:26:27,374 INFO L306 CDTParser]: Found 1 translation units. [2022-02-10 22:26:27,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2022-02-10 22:26:27,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07aaa9815/4383f0fb42f04171990a3c18ebc0e56d/FLAG1359495d9 [2022-02-10 22:26:27,400 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07aaa9815/4383f0fb42f04171990a3c18ebc0e56d [2022-02-10 22:26:27,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 22:26:27,403 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-10 22:26:27,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-10 22:26:27,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-10 22:26:27,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-10 22:26:27,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 10:26:27" (1/1) ... [2022-02-10 22:26:27,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1afb9529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:26:27, skipping insertion in model container [2022-02-10 22:26:27,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 10:26:27" (1/1) ... [2022-02-10 22:26:27,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-10 22:26:27,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-10 22:26:27,581 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c[2848,2861] [2022-02-10 22:26:27,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 22:26:27,592 INFO L203 MainTranslator]: Completed pre-run [2022-02-10 22:26:27,608 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c[2848,2861] [2022-02-10 22:26:27,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 22:26:27,622 INFO L208 MainTranslator]: Completed translation [2022-02-10 22:26:27,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:26:27 WrapperNode [2022-02-10 22:26:27,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-10 22:26:27,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 22:26:27,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 22:26:27,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 22:26:27,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:26:27" (1/1) ... [2022-02-10 22:26:27,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:26:27" (1/1) ... [2022-02-10 22:26:27,648 INFO L137 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 128 [2022-02-10 22:26:27,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 22:26:27,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 22:26:27,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 22:26:27,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 22:26:27,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:26:27" (1/1) ... [2022-02-10 22:26:27,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:26:27" (1/1) ... [2022-02-10 22:26:27,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:26:27" (1/1) ... [2022-02-10 22:26:27,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:26:27" (1/1) ... [2022-02-10 22:26:27,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:26:27" (1/1) ... [2022-02-10 22:26:27,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:26:27" (1/1) ... [2022-02-10 22:26:27,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:26:27" (1/1) ... [2022-02-10 22:26:27,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 22:26:27,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 22:26:27,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 22:26:27,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 22:26:27,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:26:27" (1/1) ... [2022-02-10 22:26:27,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 22:26:27,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:26:27,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-10 22:26:27,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-10 22:26:27,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-10 22:26:27,730 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 22:26:27,730 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 22:26:27,730 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 22:26:27,730 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 22:26:27,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-10 22:26:27,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-10 22:26:27,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-10 22:26:27,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-10 22:26:27,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 22:26:27,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 22:26:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-10 22:26:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-10 22:26:27,733 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 22:26:27,791 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 22:26:27,792 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 22:26:28,032 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 22:26:28,040 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 22:26:28,040 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-02-10 22:26:28,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:26:28 BoogieIcfgContainer [2022-02-10 22:26:28,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 22:26:28,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 22:26:28,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 22:26:28,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 22:26:28,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.02 10:26:27" (1/3) ... [2022-02-10 22:26:28,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ae7596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 10:26:28, skipping insertion in model container [2022-02-10 22:26:28,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:26:27" (2/3) ... [2022-02-10 22:26:28,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ae7596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 10:26:28, skipping insertion in model container [2022-02-10 22:26:28,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:26:28" (3/3) ... [2022-02-10 22:26:28,047 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2022-02-10 22:26:28,050 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 22:26:28,050 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 22:26:28,050 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 22:26:28,051 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 22:26:28,084 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,085 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,085 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,085 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,086 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,087 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,087 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,087 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,087 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,088 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,088 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,088 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,088 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,088 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,088 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,089 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,089 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,089 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,089 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,089 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,089 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,090 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,090 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,090 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,090 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,090 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,090 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,090 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,091 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,091 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,091 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,091 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,091 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,091 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,092 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,092 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,092 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,092 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,092 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,092 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,092 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,092 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,092 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,093 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,093 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,093 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,093 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,093 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,093 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,093 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,093 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,093 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,094 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,094 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,094 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,094 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,094 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,094 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,095 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,095 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,095 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,095 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,095 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,095 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,095 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,096 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,096 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,096 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,096 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,096 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,096 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,096 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,097 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,097 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,097 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,097 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,097 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,097 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,097 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,097 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,098 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,098 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,098 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,098 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,098 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,098 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,098 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,098 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,099 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,099 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,100 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,100 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,100 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,100 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,101 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,101 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,101 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,101 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,101 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,101 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,102 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,102 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,102 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,102 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,102 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,102 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,103 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,103 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,103 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,103 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,103 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,103 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,104 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,104 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,104 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,104 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,104 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,104 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,104 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,105 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,105 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,105 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,105 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,105 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,105 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,105 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,105 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,105 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,106 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,106 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,106 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,106 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,106 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,106 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,106 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,106 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,106 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,106 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,107 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,107 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,107 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,107 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,107 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,107 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,107 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,108 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,108 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,108 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,108 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,108 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,108 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,108 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,109 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,109 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,109 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,109 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,109 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,109 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,109 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,109 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,110 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,110 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,110 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,110 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,110 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,110 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,110 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,110 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,111 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,111 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,111 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,111 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,111 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,111 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,111 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,111 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,114 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,114 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,114 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,114 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,114 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,114 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,115 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,115 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,115 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,115 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,115 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,117 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,117 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,117 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,117 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,117 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,117 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,118 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,118 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,118 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,118 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,118 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:26:28,120 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-10 22:26:28,149 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 22:26:28,157 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-10 22:26:28,157 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 22:26:28,170 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 228 places, 246 transitions, 508 flow [2022-02-10 22:26:28,335 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5062 states, 5061 states have (on average 2.9948626753606007) internal successors, (15157), 5061 states have internal predecessors, (15157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:28,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 5062 states, 5061 states have (on average 2.9948626753606007) internal successors, (15157), 5061 states have internal predecessors, (15157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:28,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-02-10 22:26:28,389 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:28,390 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:28,391 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:28,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:28,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1888425211, now seen corresponding path program 1 times [2022-02-10 22:26:28,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:28,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019066819] [2022-02-10 22:26:28,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:28,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:28,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:28,626 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:28,626 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019066819] [2022-02-10 22:26:28,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019066819] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:28,627 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:28,627 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-10 22:26:28,628 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497099492] [2022-02-10 22:26:28,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:28,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-10 22:26:28,631 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:28,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-10 22:26:28,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 22:26:28,679 INFO L87 Difference]: Start difference. First operand has 5062 states, 5061 states have (on average 2.9948626753606007) internal successors, (15157), 5061 states have internal predecessors, (15157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:28,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:28,792 INFO L93 Difference]: Finished difference Result 5062 states and 14867 transitions. [2022-02-10 22:26:28,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 22:26:28,795 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-02-10 22:26:28,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:28,830 INFO L225 Difference]: With dead ends: 5062 [2022-02-10 22:26:28,830 INFO L226 Difference]: Without dead ends: 5055 [2022-02-10 22:26:28,833 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 22:26:28,836 INFO L934 BasicCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:28,837 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 220 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:26:28,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5055 states. [2022-02-10 22:26:28,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5055 to 5055. [2022-02-10 22:26:28,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5055 states, 5054 states have (on average 2.9402453502176495) internal successors, (14860), 5054 states have internal predecessors, (14860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:28,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5055 states to 5055 states and 14860 transitions. [2022-02-10 22:26:28,995 INFO L78 Accepts]: Start accepts. Automaton has 5055 states and 14860 transitions. Word has length 139 [2022-02-10 22:26:28,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:28,996 INFO L470 AbstractCegarLoop]: Abstraction has 5055 states and 14860 transitions. [2022-02-10 22:26:28,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:28,996 INFO L276 IsEmpty]: Start isEmpty. Operand 5055 states and 14860 transitions. [2022-02-10 22:26:29,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-02-10 22:26:29,040 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:29,040 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:29,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 22:26:29,040 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:29,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:29,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1099516835, now seen corresponding path program 1 times [2022-02-10 22:26:29,041 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:29,041 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108639759] [2022-02-10 22:26:29,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:29,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:29,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:29,180 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:29,180 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108639759] [2022-02-10 22:26:29,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108639759] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:29,181 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:29,181 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 22:26:29,181 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454275617] [2022-02-10 22:26:29,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:29,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 22:26:29,182 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:29,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 22:26:29,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 22:26:29,183 INFO L87 Difference]: Start difference. First operand 5055 states and 14860 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:29,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:29,263 INFO L93 Difference]: Finished difference Result 5771 states and 16742 transitions. [2022-02-10 22:26:29,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 22:26:29,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-02-10 22:26:29,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:29,289 INFO L225 Difference]: With dead ends: 5771 [2022-02-10 22:26:29,290 INFO L226 Difference]: Without dead ends: 5771 [2022-02-10 22:26:29,292 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 22:26:29,293 INFO L934 BasicCegarLoop]: 256 mSDtfsCounter, 99 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:29,294 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 433 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:26:29,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5771 states. [2022-02-10 22:26:29,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5771 to 5194. [2022-02-10 22:26:29,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5194 states, 5193 states have (on average 2.938571153475833) internal successors, (15260), 5193 states have internal predecessors, (15260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:29,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5194 states to 5194 states and 15260 transitions. [2022-02-10 22:26:29,420 INFO L78 Accepts]: Start accepts. Automaton has 5194 states and 15260 transitions. Word has length 139 [2022-02-10 22:26:29,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:29,423 INFO L470 AbstractCegarLoop]: Abstraction has 5194 states and 15260 transitions. [2022-02-10 22:26:29,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:29,423 INFO L276 IsEmpty]: Start isEmpty. Operand 5194 states and 15260 transitions. [2022-02-10 22:26:29,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-02-10 22:26:29,461 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:29,462 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:29,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 22:26:29,462 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:29,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:29,462 INFO L85 PathProgramCache]: Analyzing trace with hash 689073211, now seen corresponding path program 1 times [2022-02-10 22:26:29,463 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:29,463 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916484084] [2022-02-10 22:26:29,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:29,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:29,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:29,570 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:29,571 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916484084] [2022-02-10 22:26:29,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916484084] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:29,571 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:29,571 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 22:26:29,571 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649649208] [2022-02-10 22:26:29,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:29,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 22:26:29,572 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:29,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 22:26:29,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 22:26:29,572 INFO L87 Difference]: Start difference. First operand 5194 states and 15260 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:29,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:29,622 INFO L93 Difference]: Finished difference Result 6050 states and 17445 transitions. [2022-02-10 22:26:29,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 22:26:29,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-02-10 22:26:29,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:29,660 INFO L225 Difference]: With dead ends: 6050 [2022-02-10 22:26:29,660 INFO L226 Difference]: Without dead ends: 6050 [2022-02-10 22:26:29,661 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 22:26:29,665 INFO L934 BasicCegarLoop]: 259 mSDtfsCounter, 88 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:29,667 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 436 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:26:29,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6050 states. [2022-02-10 22:26:29,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6050 to 5340. [2022-02-10 22:26:29,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5340 states, 5339 states have (on average 2.9363176624836114) internal successors, (15677), 5339 states have internal predecessors, (15677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:29,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5340 states to 5340 states and 15677 transitions. [2022-02-10 22:26:29,822 INFO L78 Accepts]: Start accepts. Automaton has 5340 states and 15677 transitions. Word has length 140 [2022-02-10 22:26:29,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:29,823 INFO L470 AbstractCegarLoop]: Abstraction has 5340 states and 15677 transitions. [2022-02-10 22:26:29,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:29,823 INFO L276 IsEmpty]: Start isEmpty. Operand 5340 states and 15677 transitions. [2022-02-10 22:26:29,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-10 22:26:29,837 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:29,837 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:29,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-10 22:26:29,838 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:29,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:29,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1007108905, now seen corresponding path program 1 times [2022-02-10 22:26:29,839 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:29,839 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298595502] [2022-02-10 22:26:29,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:29,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:30,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:30,491 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:30,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298595502] [2022-02-10 22:26:30,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298595502] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:30,492 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:30,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:26:30,492 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752375709] [2022-02-10 22:26:30,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:30,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:26:30,492 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:30,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:26:30,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:26:30,493 INFO L87 Difference]: Start difference. First operand 5340 states and 15677 transitions. Second operand has 21 states, 21 states have (on average 6.714285714285714) internal successors, (141), 21 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:31,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:31,699 INFO L93 Difference]: Finished difference Result 17892 states and 52122 transitions. [2022-02-10 22:26:31,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 22:26:31,700 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.714285714285714) internal successors, (141), 21 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-02-10 22:26:31,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:31,753 INFO L225 Difference]: With dead ends: 17892 [2022-02-10 22:26:31,753 INFO L226 Difference]: Without dead ends: 17721 [2022-02-10 22:26:31,754 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=402, Invalid=1578, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 22:26:31,755 INFO L934 BasicCegarLoop]: 183 mSDtfsCounter, 3616 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3616 SdHoareTripleChecker+Valid, 3192 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:31,755 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3616 Valid, 3192 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:26:31,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17721 states. [2022-02-10 22:26:32,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17721 to 9090. [2022-02-10 22:26:32,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9090 states, 9089 states have (on average 2.942457916162394) internal successors, (26744), 9089 states have internal predecessors, (26744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:32,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9090 states to 9090 states and 26744 transitions. [2022-02-10 22:26:32,085 INFO L78 Accepts]: Start accepts. Automaton has 9090 states and 26744 transitions. Word has length 141 [2022-02-10 22:26:32,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:32,086 INFO L470 AbstractCegarLoop]: Abstraction has 9090 states and 26744 transitions. [2022-02-10 22:26:32,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.714285714285714) internal successors, (141), 21 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:32,086 INFO L276 IsEmpty]: Start isEmpty. Operand 9090 states and 26744 transitions. [2022-02-10 22:26:32,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-10 22:26:32,106 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:32,106 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:32,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-10 22:26:32,106 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:32,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:32,108 INFO L85 PathProgramCache]: Analyzing trace with hash -810308121, now seen corresponding path program 1 times [2022-02-10 22:26:32,108 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:32,108 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806213837] [2022-02-10 22:26:32,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:32,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:32,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:32,152 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:32,152 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806213837] [2022-02-10 22:26:32,152 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806213837] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:32,152 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:32,152 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 22:26:32,152 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051539733] [2022-02-10 22:26:32,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:32,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 22:26:32,154 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:32,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 22:26:32,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 22:26:32,154 INFO L87 Difference]: Start difference. First operand 9090 states and 26744 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:32,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:32,210 INFO L93 Difference]: Finished difference Result 9363 states and 26702 transitions. [2022-02-10 22:26:32,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 22:26:32,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-02-10 22:26:32,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:32,238 INFO L225 Difference]: With dead ends: 9363 [2022-02-10 22:26:32,238 INFO L226 Difference]: Without dead ends: 9363 [2022-02-10 22:26:32,239 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 22:26:32,239 INFO L934 BasicCegarLoop]: 231 mSDtfsCounter, 92 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:32,239 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 376 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:26:32,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9363 states. [2022-02-10 22:26:32,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9363 to 9189. [2022-02-10 22:26:32,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9189 states, 9188 states have (on average 2.866238572050501) internal successors, (26335), 9188 states have internal predecessors, (26335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:32,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9189 states to 9189 states and 26335 transitions. [2022-02-10 22:26:32,495 INFO L78 Accepts]: Start accepts. Automaton has 9189 states and 26335 transitions. Word has length 141 [2022-02-10 22:26:32,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:32,495 INFO L470 AbstractCegarLoop]: Abstraction has 9189 states and 26335 transitions. [2022-02-10 22:26:32,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:32,496 INFO L276 IsEmpty]: Start isEmpty. Operand 9189 states and 26335 transitions. [2022-02-10 22:26:32,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-10 22:26:32,513 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:32,513 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:32,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-10 22:26:32,513 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:32,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:32,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1850227483, now seen corresponding path program 1 times [2022-02-10 22:26:32,514 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:32,514 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034811704] [2022-02-10 22:26:32,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:32,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:32,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:32,541 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:32,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034811704] [2022-02-10 22:26:32,541 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034811704] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:32,541 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:32,541 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 22:26:32,541 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422448148] [2022-02-10 22:26:32,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:32,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 22:26:32,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:32,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 22:26:32,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 22:26:32,542 INFO L87 Difference]: Start difference. First operand 9189 states and 26335 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:32,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:32,645 INFO L93 Difference]: Finished difference Result 8228 states and 23405 transitions. [2022-02-10 22:26:32,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 22:26:32,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-02-10 22:26:32,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:32,663 INFO L225 Difference]: With dead ends: 8228 [2022-02-10 22:26:32,664 INFO L226 Difference]: Without dead ends: 8228 [2022-02-10 22:26:32,664 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 22:26:32,665 INFO L934 BasicCegarLoop]: 225 mSDtfsCounter, 38 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:32,667 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 418 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:26:32,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8228 states. [2022-02-10 22:26:32,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8228 to 8162. [2022-02-10 22:26:32,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8162 states, 8161 states have (on average 2.8543070702119837) internal successors, (23294), 8161 states have internal predecessors, (23294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:32,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8162 states to 8162 states and 23294 transitions. [2022-02-10 22:26:32,894 INFO L78 Accepts]: Start accepts. Automaton has 8162 states and 23294 transitions. Word has length 141 [2022-02-10 22:26:32,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:32,894 INFO L470 AbstractCegarLoop]: Abstraction has 8162 states and 23294 transitions. [2022-02-10 22:26:32,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:32,894 INFO L276 IsEmpty]: Start isEmpty. Operand 8162 states and 23294 transitions. [2022-02-10 22:26:32,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-10 22:26:32,908 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:32,908 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:32,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-10 22:26:32,909 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:32,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:32,914 INFO L85 PathProgramCache]: Analyzing trace with hash 627322787, now seen corresponding path program 1 times [2022-02-10 22:26:32,914 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:32,917 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747736551] [2022-02-10 22:26:32,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:32,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:32,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:32,951 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:32,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747736551] [2022-02-10 22:26:32,952 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747736551] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:32,952 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:32,952 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 22:26:32,952 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075839012] [2022-02-10 22:26:32,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:32,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 22:26:32,952 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:32,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 22:26:32,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 22:26:32,953 INFO L87 Difference]: Start difference. First operand 8162 states and 23294 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:32,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:32,998 INFO L93 Difference]: Finished difference Result 8443 states and 23912 transitions. [2022-02-10 22:26:32,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 22:26:32,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-02-10 22:26:32,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:33,018 INFO L225 Difference]: With dead ends: 8443 [2022-02-10 22:26:33,018 INFO L226 Difference]: Without dead ends: 8443 [2022-02-10 22:26:33,018 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 22:26:33,019 INFO L934 BasicCegarLoop]: 232 mSDtfsCounter, 30 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:33,020 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 432 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:26:33,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8443 states. [2022-02-10 22:26:33,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8443 to 8261. [2022-02-10 22:26:33,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8261 states, 8260 states have (on average 2.846852300242131) internal successors, (23515), 8260 states have internal predecessors, (23515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:33,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8261 states to 8261 states and 23515 transitions. [2022-02-10 22:26:33,241 INFO L78 Accepts]: Start accepts. Automaton has 8261 states and 23515 transitions. Word has length 141 [2022-02-10 22:26:33,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:33,241 INFO L470 AbstractCegarLoop]: Abstraction has 8261 states and 23515 transitions. [2022-02-10 22:26:33,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:33,241 INFO L276 IsEmpty]: Start isEmpty. Operand 8261 states and 23515 transitions. [2022-02-10 22:26:33,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-10 22:26:33,259 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:33,259 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:33,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-10 22:26:33,259 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:33,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:33,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1619956611, now seen corresponding path program 1 times [2022-02-10 22:26:33,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:33,260 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723477178] [2022-02-10 22:26:33,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:33,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:33,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:33,369 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:33,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723477178] [2022-02-10 22:26:33,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723477178] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:33,369 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:33,369 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 22:26:33,369 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871699882] [2022-02-10 22:26:33,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:33,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 22:26:33,369 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:33,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 22:26:33,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:26:33,370 INFO L87 Difference]: Start difference. First operand 8261 states and 23515 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:33,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:33,514 INFO L93 Difference]: Finished difference Result 8550 states and 24135 transitions. [2022-02-10 22:26:33,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 22:26:33,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-02-10 22:26:33,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:33,534 INFO L225 Difference]: With dead ends: 8550 [2022-02-10 22:26:33,534 INFO L226 Difference]: Without dead ends: 8343 [2022-02-10 22:26:33,535 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-02-10 22:26:33,535 INFO L934 BasicCegarLoop]: 261 mSDtfsCounter, 117 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:33,535 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 1269 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:26:33,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8343 states. [2022-02-10 22:26:33,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8343 to 8184. [2022-02-10 22:26:33,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8184 states, 8183 states have (on average 2.8502994011976046) internal successors, (23324), 8183 states have internal predecessors, (23324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:33,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8184 states to 8184 states and 23324 transitions. [2022-02-10 22:26:33,753 INFO L78 Accepts]: Start accepts. Automaton has 8184 states and 23324 transitions. Word has length 141 [2022-02-10 22:26:33,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:33,753 INFO L470 AbstractCegarLoop]: Abstraction has 8184 states and 23324 transitions. [2022-02-10 22:26:33,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:33,754 INFO L276 IsEmpty]: Start isEmpty. Operand 8184 states and 23324 transitions. [2022-02-10 22:26:33,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-10 22:26:33,770 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:33,770 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:33,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-10 22:26:33,771 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:33,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:33,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1621927651, now seen corresponding path program 2 times [2022-02-10 22:26:33,771 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:33,771 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111500701] [2022-02-10 22:26:33,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:33,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:33,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:33,878 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:33,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111500701] [2022-02-10 22:26:33,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111500701] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:33,879 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:33,879 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 22:26:33,879 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416734933] [2022-02-10 22:26:33,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:33,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 22:26:33,879 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:33,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 22:26:33,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:26:33,880 INFO L87 Difference]: Start difference. First operand 8184 states and 23324 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:33,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:33,989 INFO L93 Difference]: Finished difference Result 8366 states and 23739 transitions. [2022-02-10 22:26:33,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 22:26:33,990 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-02-10 22:26:33,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:34,006 INFO L225 Difference]: With dead ends: 8366 [2022-02-10 22:26:34,006 INFO L226 Difference]: Without dead ends: 8259 [2022-02-10 22:26:34,007 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-10 22:26:34,008 INFO L934 BasicCegarLoop]: 249 mSDtfsCounter, 49 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:34,008 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1197 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:26:34,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8259 states. [2022-02-10 22:26:34,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8259 to 8188. [2022-02-10 22:26:34,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8188 states, 8187 states have (on average 2.8497618175155734) internal successors, (23331), 8187 states have internal predecessors, (23331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:34,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8188 states to 8188 states and 23331 transitions. [2022-02-10 22:26:34,164 INFO L78 Accepts]: Start accepts. Automaton has 8188 states and 23331 transitions. Word has length 141 [2022-02-10 22:26:34,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:34,165 INFO L470 AbstractCegarLoop]: Abstraction has 8188 states and 23331 transitions. [2022-02-10 22:26:34,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:34,165 INFO L276 IsEmpty]: Start isEmpty. Operand 8188 states and 23331 transitions. [2022-02-10 22:26:34,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-10 22:26:34,275 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:34,275 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:34,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-10 22:26:34,276 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:34,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:34,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1818903025, now seen corresponding path program 3 times [2022-02-10 22:26:34,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:34,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128080816] [2022-02-10 22:26:34,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:34,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:34,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:34,392 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:34,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128080816] [2022-02-10 22:26:34,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128080816] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:34,392 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:34,393 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 22:26:34,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462373625] [2022-02-10 22:26:34,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:34,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 22:26:34,393 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:34,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 22:26:34,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:26:34,394 INFO L87 Difference]: Start difference. First operand 8188 states and 23331 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:34,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:34,525 INFO L93 Difference]: Finished difference Result 8340 states and 23672 transitions. [2022-02-10 22:26:34,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 22:26:34,525 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-02-10 22:26:34,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:34,544 INFO L225 Difference]: With dead ends: 8340 [2022-02-10 22:26:34,544 INFO L226 Difference]: Without dead ends: 8210 [2022-02-10 22:26:34,544 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-10 22:26:34,545 INFO L934 BasicCegarLoop]: 244 mSDtfsCounter, 35 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:34,546 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 1585 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:26:34,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8210 states. [2022-02-10 22:26:34,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8210 to 8162. [2022-02-10 22:26:34,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8162 states, 8161 states have (on average 2.8511211861291508) internal successors, (23268), 8161 states have internal predecessors, (23268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:34,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8162 states to 8162 states and 23268 transitions. [2022-02-10 22:26:34,718 INFO L78 Accepts]: Start accepts. Automaton has 8162 states and 23268 transitions. Word has length 141 [2022-02-10 22:26:34,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:34,719 INFO L470 AbstractCegarLoop]: Abstraction has 8162 states and 23268 transitions. [2022-02-10 22:26:34,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:34,719 INFO L276 IsEmpty]: Start isEmpty. Operand 8162 states and 23268 transitions. [2022-02-10 22:26:34,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-10 22:26:34,733 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:34,733 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:34,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-10 22:26:34,733 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:34,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:34,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1913029597, now seen corresponding path program 4 times [2022-02-10 22:26:34,734 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:34,734 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272619785] [2022-02-10 22:26:34,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:34,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:34,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:34,817 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:34,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272619785] [2022-02-10 22:26:34,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272619785] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:34,818 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:34,818 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 22:26:34,818 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004883626] [2022-02-10 22:26:34,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:34,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 22:26:34,818 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:34,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 22:26:34,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:26:34,819 INFO L87 Difference]: Start difference. First operand 8162 states and 23268 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:34,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:34,950 INFO L93 Difference]: Finished difference Result 8502 states and 24043 transitions. [2022-02-10 22:26:34,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 22:26:34,950 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-02-10 22:26:34,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:35,009 INFO L225 Difference]: With dead ends: 8502 [2022-02-10 22:26:35,010 INFO L226 Difference]: Without dead ends: 8382 [2022-02-10 22:26:35,010 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-02-10 22:26:35,011 INFO L934 BasicCegarLoop]: 253 mSDtfsCounter, 124 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:35,011 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 1057 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:26:35,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8382 states. [2022-02-10 22:26:35,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8382 to 8226. [2022-02-10 22:26:35,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8226 states, 8225 states have (on average 2.84887537993921) internal successors, (23432), 8225 states have internal predecessors, (23432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:35,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8226 states to 8226 states and 23432 transitions. [2022-02-10 22:26:35,138 INFO L78 Accepts]: Start accepts. Automaton has 8226 states and 23432 transitions. Word has length 141 [2022-02-10 22:26:35,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:35,139 INFO L470 AbstractCegarLoop]: Abstraction has 8226 states and 23432 transitions. [2022-02-10 22:26:35,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:35,139 INFO L276 IsEmpty]: Start isEmpty. Operand 8226 states and 23432 transitions. [2022-02-10 22:26:35,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-10 22:26:35,151 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:35,151 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:35,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-10 22:26:35,151 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:35,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:35,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1405816603, now seen corresponding path program 5 times [2022-02-10 22:26:35,152 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:35,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889537004] [2022-02-10 22:26:35,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:35,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:35,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:35,227 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:35,227 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889537004] [2022-02-10 22:26:35,227 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889537004] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:35,227 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:35,227 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 22:26:35,227 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493349341] [2022-02-10 22:26:35,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:35,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 22:26:35,228 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:35,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 22:26:35,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:26:35,228 INFO L87 Difference]: Start difference. First operand 8226 states and 23432 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:35,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:35,337 INFO L93 Difference]: Finished difference Result 8414 states and 23859 transitions. [2022-02-10 22:26:35,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 22:26:35,338 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-02-10 22:26:35,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:35,353 INFO L225 Difference]: With dead ends: 8414 [2022-02-10 22:26:35,354 INFO L226 Difference]: Without dead ends: 8307 [2022-02-10 22:26:35,354 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-02-10 22:26:35,355 INFO L934 BasicCegarLoop]: 243 mSDtfsCounter, 59 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:35,355 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 1160 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:26:35,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8307 states. [2022-02-10 22:26:35,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8307 to 8230. [2022-02-10 22:26:35,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8230 states, 8229 states have (on average 2.8483412322274884) internal successors, (23439), 8229 states have internal predecessors, (23439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:35,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8230 states to 8230 states and 23439 transitions. [2022-02-10 22:26:35,501 INFO L78 Accepts]: Start accepts. Automaton has 8230 states and 23439 transitions. Word has length 141 [2022-02-10 22:26:35,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:35,501 INFO L470 AbstractCegarLoop]: Abstraction has 8230 states and 23439 transitions. [2022-02-10 22:26:35,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:35,501 INFO L276 IsEmpty]: Start isEmpty. Operand 8230 states and 23439 transitions. [2022-02-10 22:26:35,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-10 22:26:35,540 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:35,540 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:35,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-10 22:26:35,540 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:35,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:35,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1602791977, now seen corresponding path program 6 times [2022-02-10 22:26:35,541 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:35,541 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506596953] [2022-02-10 22:26:35,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:35,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:35,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:35,619 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:35,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506596953] [2022-02-10 22:26:35,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506596953] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:35,619 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:35,619 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 22:26:35,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997746107] [2022-02-10 22:26:35,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:35,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 22:26:35,619 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:35,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 22:26:35,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:26:35,620 INFO L87 Difference]: Start difference. First operand 8230 states and 23439 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:35,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:35,748 INFO L93 Difference]: Finished difference Result 8388 states and 23792 transitions. [2022-02-10 22:26:35,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 22:26:35,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-02-10 22:26:35,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:35,763 INFO L225 Difference]: With dead ends: 8388 [2022-02-10 22:26:35,763 INFO L226 Difference]: Without dead ends: 8254 [2022-02-10 22:26:35,763 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-10 22:26:35,764 INFO L934 BasicCegarLoop]: 246 mSDtfsCounter, 48 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:35,764 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 1178 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:26:35,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8254 states. [2022-02-10 22:26:35,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8254 to 8200. [2022-02-10 22:26:35,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8200 states, 8199 states have (on average 2.849737772899134) internal successors, (23365), 8199 states have internal predecessors, (23365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:35,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8200 states to 8200 states and 23365 transitions. [2022-02-10 22:26:35,893 INFO L78 Accepts]: Start accepts. Automaton has 8200 states and 23365 transitions. Word has length 141 [2022-02-10 22:26:35,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:35,893 INFO L470 AbstractCegarLoop]: Abstraction has 8200 states and 23365 transitions. [2022-02-10 22:26:35,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:35,894 INFO L276 IsEmpty]: Start isEmpty. Operand 8200 states and 23365 transitions. [2022-02-10 22:26:35,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-10 22:26:35,906 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:35,906 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:35,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-10 22:26:35,906 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:35,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:35,906 INFO L85 PathProgramCache]: Analyzing trace with hash -2098111613, now seen corresponding path program 1 times [2022-02-10 22:26:35,907 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:35,907 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593278304] [2022-02-10 22:26:35,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:35,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:35,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:35,978 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:35,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593278304] [2022-02-10 22:26:35,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593278304] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:35,978 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:35,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 22:26:35,978 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312993875] [2022-02-10 22:26:35,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:35,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 22:26:35,978 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:35,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 22:26:35,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:26:35,979 INFO L87 Difference]: Start difference. First operand 8200 states and 23365 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:36,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:36,093 INFO L93 Difference]: Finished difference Result 8460 states and 23922 transitions. [2022-02-10 22:26:36,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 22:26:36,093 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-02-10 22:26:36,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:36,108 INFO L225 Difference]: With dead ends: 8460 [2022-02-10 22:26:36,108 INFO L226 Difference]: Without dead ends: 8340 [2022-02-10 22:26:36,108 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-02-10 22:26:36,108 INFO L934 BasicCegarLoop]: 263 mSDtfsCounter, 112 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:36,109 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 1044 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:26:36,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8340 states. [2022-02-10 22:26:36,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8340 to 8204. [2022-02-10 22:26:36,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8204 states, 8203 states have (on average 2.8468852858710227) internal successors, (23353), 8203 states have internal predecessors, (23353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:36,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 23353 transitions. [2022-02-10 22:26:36,250 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 23353 transitions. Word has length 141 [2022-02-10 22:26:36,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:36,251 INFO L470 AbstractCegarLoop]: Abstraction has 8204 states and 23353 transitions. [2022-02-10 22:26:36,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:36,251 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 23353 transitions. [2022-02-10 22:26:36,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-10 22:26:36,263 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:36,263 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:36,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-10 22:26:36,263 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:36,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:36,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1105477789, now seen corresponding path program 1 times [2022-02-10 22:26:36,263 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:36,263 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48974863] [2022-02-10 22:26:36,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:36,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:36,291 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:36,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48974863] [2022-02-10 22:26:36,291 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48974863] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:36,291 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:36,291 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 22:26:36,292 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468289806] [2022-02-10 22:26:36,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:36,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 22:26:36,292 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:36,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 22:26:36,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-10 22:26:36,292 INFO L87 Difference]: Start difference. First operand 8204 states and 23353 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:36,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:36,341 INFO L93 Difference]: Finished difference Result 8223 states and 23294 transitions. [2022-02-10 22:26:36,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 22:26:36,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-02-10 22:26:36,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:36,356 INFO L225 Difference]: With dead ends: 8223 [2022-02-10 22:26:36,356 INFO L226 Difference]: Without dead ends: 8142 [2022-02-10 22:26:36,357 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-10 22:26:36,359 INFO L934 BasicCegarLoop]: 235 mSDtfsCounter, 55 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:36,359 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 636 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:26:36,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8142 states. [2022-02-10 22:26:36,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8142 to 8016. [2022-02-10 22:26:36,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8016 states, 8015 states have (on average 2.8510293200249532) internal successors, (22851), 8015 states have internal predecessors, (22851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:36,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8016 states to 8016 states and 22851 transitions. [2022-02-10 22:26:36,518 INFO L78 Accepts]: Start accepts. Automaton has 8016 states and 22851 transitions. Word has length 141 [2022-02-10 22:26:36,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:36,518 INFO L470 AbstractCegarLoop]: Abstraction has 8016 states and 22851 transitions. [2022-02-10 22:26:36,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:36,518 INFO L276 IsEmpty]: Start isEmpty. Operand 8016 states and 22851 transitions. [2022-02-10 22:26:36,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-10 22:26:36,531 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:36,531 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:36,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-10 22:26:36,532 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:36,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:36,533 INFO L85 PathProgramCache]: Analyzing trace with hash 54678179, now seen corresponding path program 2 times [2022-02-10 22:26:36,533 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:36,533 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844931293] [2022-02-10 22:26:36,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:36,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:36,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:36,623 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:36,623 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844931293] [2022-02-10 22:26:36,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844931293] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:36,625 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:36,625 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 22:26:36,625 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848648225] [2022-02-10 22:26:36,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:36,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 22:26:36,625 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:36,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 22:26:36,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:26:36,626 INFO L87 Difference]: Start difference. First operand 8016 states and 22851 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:36,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:36,781 INFO L93 Difference]: Finished difference Result 8144 states and 23136 transitions. [2022-02-10 22:26:36,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 22:26:36,781 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-02-10 22:26:36,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:36,798 INFO L225 Difference]: With dead ends: 8144 [2022-02-10 22:26:36,798 INFO L226 Difference]: Without dead ends: 8043 [2022-02-10 22:26:36,799 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-10 22:26:36,799 INFO L934 BasicCegarLoop]: 246 mSDtfsCounter, 49 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:36,799 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1180 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:26:36,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8043 states. [2022-02-10 22:26:36,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8043 to 8020. [2022-02-10 22:26:36,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8020 states, 8019 states have (on average 2.850480109739369) internal successors, (22858), 8019 states have internal predecessors, (22858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:36,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8020 states to 8020 states and 22858 transitions. [2022-02-10 22:26:36,960 INFO L78 Accepts]: Start accepts. Automaton has 8020 states and 22858 transitions. Word has length 141 [2022-02-10 22:26:36,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:36,960 INFO L470 AbstractCegarLoop]: Abstraction has 8020 states and 22858 transitions. [2022-02-10 22:26:36,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:36,960 INFO L276 IsEmpty]: Start isEmpty. Operand 8020 states and 22858 transitions. [2022-02-10 22:26:36,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-10 22:26:36,974 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:36,974 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:36,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-10 22:26:36,974 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:36,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:36,975 INFO L85 PathProgramCache]: Analyzing trace with hash 251653553, now seen corresponding path program 3 times [2022-02-10 22:26:36,975 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:36,975 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210106706] [2022-02-10 22:26:36,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:36,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:37,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:37,067 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:37,067 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210106706] [2022-02-10 22:26:37,067 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210106706] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:37,067 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:37,067 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 22:26:37,068 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827634594] [2022-02-10 22:26:37,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:37,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 22:26:37,068 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:37,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 22:26:37,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:26:37,069 INFO L87 Difference]: Start difference. First operand 8020 states and 22858 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:37,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:37,198 INFO L93 Difference]: Finished difference Result 8118 states and 23069 transitions. [2022-02-10 22:26:37,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 22:26:37,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-02-10 22:26:37,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:37,215 INFO L225 Difference]: With dead ends: 8118 [2022-02-10 22:26:37,215 INFO L226 Difference]: Without dead ends: 7994 [2022-02-10 22:26:37,215 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-10 22:26:37,215 INFO L934 BasicCegarLoop]: 241 mSDtfsCounter, 39 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:37,216 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 1153 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:26:37,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7994 states. [2022-02-10 22:26:37,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7994 to 7994. [2022-02-10 22:26:37,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7994 states, 7993 states have (on average 2.851870386588265) internal successors, (22795), 7993 states have internal predecessors, (22795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:37,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7994 states to 7994 states and 22795 transitions. [2022-02-10 22:26:37,352 INFO L78 Accepts]: Start accepts. Automaton has 7994 states and 22795 transitions. Word has length 141 [2022-02-10 22:26:37,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:37,353 INFO L470 AbstractCegarLoop]: Abstraction has 7994 states and 22795 transitions. [2022-02-10 22:26:37,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:37,353 INFO L276 IsEmpty]: Start isEmpty. Operand 7994 states and 22795 transitions. [2022-02-10 22:26:37,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-10 22:26:37,366 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:37,366 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:37,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-10 22:26:37,366 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:37,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:37,366 INFO L85 PathProgramCache]: Analyzing trace with hash 215087779, now seen corresponding path program 4 times [2022-02-10 22:26:37,367 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:37,367 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208350179] [2022-02-10 22:26:37,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:37,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:37,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:37,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:37,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208350179] [2022-02-10 22:26:37,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208350179] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:37,461 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:37,461 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 22:26:37,461 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187923696] [2022-02-10 22:26:37,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:37,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 22:26:37,462 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:37,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 22:26:37,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:26:37,462 INFO L87 Difference]: Start difference. First operand 7994 states and 22795 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:37,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:37,621 INFO L93 Difference]: Finished difference Result 8308 states and 23493 transitions. [2022-02-10 22:26:37,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 22:26:37,621 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-02-10 22:26:37,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:37,637 INFO L225 Difference]: With dead ends: 8308 [2022-02-10 22:26:37,637 INFO L226 Difference]: Without dead ends: 8146 [2022-02-10 22:26:37,637 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-02-10 22:26:37,637 INFO L934 BasicCegarLoop]: 245 mSDtfsCounter, 109 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:37,638 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 1593 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:26:37,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8146 states. [2022-02-10 22:26:37,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8146 to 8010. [2022-02-10 22:26:37,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8010 states, 8009 states have (on average 2.849669122237483) internal successors, (22823), 8009 states have internal predecessors, (22823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:37,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8010 states to 8010 states and 22823 transitions. [2022-02-10 22:26:37,765 INFO L78 Accepts]: Start accepts. Automaton has 8010 states and 22823 transitions. Word has length 141 [2022-02-10 22:26:37,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:37,765 INFO L470 AbstractCegarLoop]: Abstraction has 8010 states and 22823 transitions. [2022-02-10 22:26:37,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:37,765 INFO L276 IsEmpty]: Start isEmpty. Operand 8010 states and 22823 transitions. [2022-02-10 22:26:37,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-10 22:26:37,777 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:37,778 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:37,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-10 22:26:37,778 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:37,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:37,778 INFO L85 PathProgramCache]: Analyzing trace with hash -934606403, now seen corresponding path program 5 times [2022-02-10 22:26:37,778 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:37,778 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166101626] [2022-02-10 22:26:37,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:37,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:37,841 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:37,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166101626] [2022-02-10 22:26:37,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166101626] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:37,841 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:37,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 22:26:37,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603679858] [2022-02-10 22:26:37,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:37,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 22:26:37,843 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:37,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 22:26:37,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:26:37,843 INFO L87 Difference]: Start difference. First operand 8010 states and 22823 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:37,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:37,951 INFO L93 Difference]: Finished difference Result 8138 states and 23108 transitions. [2022-02-10 22:26:37,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 22:26:37,951 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-02-10 22:26:37,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:37,966 INFO L225 Difference]: With dead ends: 8138 [2022-02-10 22:26:37,966 INFO L226 Difference]: Without dead ends: 8037 [2022-02-10 22:26:37,966 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-10 22:26:37,967 INFO L934 BasicCegarLoop]: 239 mSDtfsCounter, 52 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:37,967 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 1132 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:26:37,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8037 states. [2022-02-10 22:26:38,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8037 to 8014. [2022-02-10 22:26:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8014 states, 8013 states have (on average 2.8491201797079744) internal successors, (22830), 8013 states have internal predecessors, (22830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:38,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8014 states to 8014 states and 22830 transitions. [2022-02-10 22:26:38,097 INFO L78 Accepts]: Start accepts. Automaton has 8014 states and 22830 transitions. Word has length 141 [2022-02-10 22:26:38,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:38,097 INFO L470 AbstractCegarLoop]: Abstraction has 8014 states and 22830 transitions. [2022-02-10 22:26:38,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:38,098 INFO L276 IsEmpty]: Start isEmpty. Operand 8014 states and 22830 transitions. [2022-02-10 22:26:38,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-10 22:26:38,109 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:38,109 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:38,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-10 22:26:38,110 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:38,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:38,110 INFO L85 PathProgramCache]: Analyzing trace with hash -737631029, now seen corresponding path program 6 times [2022-02-10 22:26:38,110 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:38,110 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876062821] [2022-02-10 22:26:38,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:38,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:38,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:38,179 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:38,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876062821] [2022-02-10 22:26:38,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876062821] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:38,179 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:38,179 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 22:26:38,179 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61199168] [2022-02-10 22:26:38,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:38,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 22:26:38,180 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:38,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 22:26:38,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:26:38,180 INFO L87 Difference]: Start difference. First operand 8014 states and 22830 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:38,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:38,269 INFO L93 Difference]: Finished difference Result 8112 states and 23041 transitions. [2022-02-10 22:26:38,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 22:26:38,269 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-02-10 22:26:38,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:38,285 INFO L225 Difference]: With dead ends: 8112 [2022-02-10 22:26:38,285 INFO L226 Difference]: Without dead ends: 7960 [2022-02-10 22:26:38,285 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-10 22:26:38,286 INFO L934 BasicCegarLoop]: 236 mSDtfsCounter, 47 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:38,286 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 930 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:26:38,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7960 states. [2022-02-10 22:26:38,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7960 to 7960. [2022-02-10 22:26:38,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7960 states, 7959 states have (on average 2.851865812287976) internal successors, (22698), 7959 states have internal predecessors, (22698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:38,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7960 states to 7960 states and 22698 transitions. [2022-02-10 22:26:38,424 INFO L78 Accepts]: Start accepts. Automaton has 7960 states and 22698 transitions. Word has length 141 [2022-02-10 22:26:38,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:38,424 INFO L470 AbstractCegarLoop]: Abstraction has 7960 states and 22698 transitions. [2022-02-10 22:26:38,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:38,424 INFO L276 IsEmpty]: Start isEmpty. Operand 7960 states and 22698 transitions. [2022-02-10 22:26:38,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-10 22:26:38,435 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:38,436 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:38,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-10 22:26:38,436 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:38,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:38,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1753409837, now seen corresponding path program 2 times [2022-02-10 22:26:38,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:38,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940311816] [2022-02-10 22:26:38,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:38,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:38,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:38,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:38,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940311816] [2022-02-10 22:26:38,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940311816] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:38,461 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:38,461 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 22:26:38,461 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449918420] [2022-02-10 22:26:38,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:38,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 22:26:38,461 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:38,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 22:26:38,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-10 22:26:38,462 INFO L87 Difference]: Start difference. First operand 7960 states and 22698 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:38,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:38,499 INFO L93 Difference]: Finished difference Result 7843 states and 22383 transitions. [2022-02-10 22:26:38,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 22:26:38,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-02-10 22:26:38,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:38,514 INFO L225 Difference]: With dead ends: 7843 [2022-02-10 22:26:38,514 INFO L226 Difference]: Without dead ends: 7745 [2022-02-10 22:26:38,514 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-10 22:26:38,515 INFO L934 BasicCegarLoop]: 220 mSDtfsCounter, 16 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:38,515 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 423 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:26:38,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7745 states. [2022-02-10 22:26:38,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7745 to 7745. [2022-02-10 22:26:38,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7745 states, 7744 states have (on average 2.8574380165289255) internal successors, (22128), 7744 states have internal predecessors, (22128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:38,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7745 states to 7745 states and 22128 transitions. [2022-02-10 22:26:38,635 INFO L78 Accepts]: Start accepts. Automaton has 7745 states and 22128 transitions. Word has length 141 [2022-02-10 22:26:38,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:38,635 INFO L470 AbstractCegarLoop]: Abstraction has 7745 states and 22128 transitions. [2022-02-10 22:26:38,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:38,636 INFO L276 IsEmpty]: Start isEmpty. Operand 7745 states and 22128 transitions. [2022-02-10 22:26:38,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-02-10 22:26:38,647 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:38,647 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:38,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-10 22:26:38,647 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:38,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:38,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1986433718, now seen corresponding path program 1 times [2022-02-10 22:26:38,648 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:38,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859347830] [2022-02-10 22:26:38,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:38,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:38,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:38,784 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:38,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859347830] [2022-02-10 22:26:38,784 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859347830] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:26:38,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561639801] [2022-02-10 22:26:38,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:38,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:26:38,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:26:38,785 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:26:38,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 22:26:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:38,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 22:26:38,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:26:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:39,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:26:39,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:39,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561639801] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 22:26:39,925 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 22:26:39,925 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 14] total 30 [2022-02-10 22:26:39,925 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121086282] [2022-02-10 22:26:39,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:39,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 22:26:39,926 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:39,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 22:26:39,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2022-02-10 22:26:39,926 INFO L87 Difference]: Start difference. First operand 7745 states and 22128 transitions. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:40,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:40,394 INFO L93 Difference]: Finished difference Result 13005 states and 36572 transitions. [2022-02-10 22:26:40,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 22:26:40,395 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-02-10 22:26:40,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:40,421 INFO L225 Difference]: With dead ends: 13005 [2022-02-10 22:26:40,421 INFO L226 Difference]: Without dead ends: 12924 [2022-02-10 22:26:40,422 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 279 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=362, Invalid=1530, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 22:26:40,422 INFO L934 BasicCegarLoop]: 296 mSDtfsCounter, 878 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:40,422 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [878 Valid, 2533 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 22:26:40,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12924 states. [2022-02-10 22:26:40,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12924 to 9243. [2022-02-10 22:26:40,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9243 states, 9242 states have (on average 2.8779484959965376) internal successors, (26598), 9242 states have internal predecessors, (26598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:40,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9243 states to 9243 states and 26598 transitions. [2022-02-10 22:26:40,650 INFO L78 Accepts]: Start accepts. Automaton has 9243 states and 26598 transitions. Word has length 148 [2022-02-10 22:26:40,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:40,650 INFO L470 AbstractCegarLoop]: Abstraction has 9243 states and 26598 transitions. [2022-02-10 22:26:40,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:40,650 INFO L276 IsEmpty]: Start isEmpty. Operand 9243 states and 26598 transitions. [2022-02-10 22:26:40,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-02-10 22:26:40,666 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:40,666 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:40,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-10 22:26:40,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-02-10 22:26:40,884 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:40,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:40,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1487913134, now seen corresponding path program 2 times [2022-02-10 22:26:40,885 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:40,885 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319713034] [2022-02-10 22:26:40,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:40,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:41,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:41,035 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:41,035 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319713034] [2022-02-10 22:26:41,035 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319713034] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:26:41,035 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043570809] [2022-02-10 22:26:41,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:26:41,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:26:41,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:26:41,036 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:26:41,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 22:26:41,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-02-10 22:26:41,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:26:41,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 22:26:41,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:26:41,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:26:41,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-10 22:26:41,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043570809] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:41,786 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-10 22:26:41,787 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [15] total 28 [2022-02-10 22:26:41,787 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452605208] [2022-02-10 22:26:41,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:41,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:26:41,787 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:41,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:26:41,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-02-10 22:26:41,788 INFO L87 Difference]: Start difference. First operand 9243 states and 26598 transitions. Second operand has 18 states, 18 states have (on average 8.222222222222221) internal successors, (148), 18 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:42,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:42,692 INFO L93 Difference]: Finished difference Result 10514 states and 29630 transitions. [2022-02-10 22:26:42,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 22:26:42,693 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.222222222222221) internal successors, (148), 18 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-02-10 22:26:42,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:42,712 INFO L225 Difference]: With dead ends: 10514 [2022-02-10 22:26:42,712 INFO L226 Difference]: Without dead ends: 10411 [2022-02-10 22:26:42,713 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=373, Invalid=1883, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 22:26:42,713 INFO L934 BasicCegarLoop]: 210 mSDtfsCounter, 995 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:42,713 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 2430 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:26:42,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10411 states. [2022-02-10 22:26:42,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10411 to 7793. [2022-02-10 22:26:42,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7793 states, 7792 states have (on average 2.8488193018480494) internal successors, (22198), 7792 states have internal predecessors, (22198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:42,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7793 states to 7793 states and 22198 transitions. [2022-02-10 22:26:42,868 INFO L78 Accepts]: Start accepts. Automaton has 7793 states and 22198 transitions. Word has length 148 [2022-02-10 22:26:42,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:42,868 INFO L470 AbstractCegarLoop]: Abstraction has 7793 states and 22198 transitions. [2022-02-10 22:26:42,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.222222222222221) internal successors, (148), 18 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:42,868 INFO L276 IsEmpty]: Start isEmpty. Operand 7793 states and 22198 transitions. [2022-02-10 22:26:42,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-02-10 22:26:42,880 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:42,880 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:42,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 22:26:43,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-02-10 22:26:43,087 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:43,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:43,088 INFO L85 PathProgramCache]: Analyzing trace with hash -2133376293, now seen corresponding path program 1 times [2022-02-10 22:26:43,088 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:43,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771199334] [2022-02-10 22:26:43,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:43,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:43,261 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:43,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771199334] [2022-02-10 22:26:43,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771199334] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:26:43,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101258767] [2022-02-10 22:26:43,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:43,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:26:43,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:26:43,263 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:26:43,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 22:26:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:43,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 22:26:43,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:26:43,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:43,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:26:44,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:44,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101258767] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 22:26:44,326 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 22:26:44,326 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 14] total 30 [2022-02-10 22:26:44,326 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907269118] [2022-02-10 22:26:44,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:44,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 22:26:44,328 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:44,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 22:26:44,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2022-02-10 22:26:44,335 INFO L87 Difference]: Start difference. First operand 7793 states and 22198 transitions. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:44,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:44,741 INFO L93 Difference]: Finished difference Result 13053 states and 36642 transitions. [2022-02-10 22:26:44,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 22:26:44,741 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-02-10 22:26:44,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:44,767 INFO L225 Difference]: With dead ends: 13053 [2022-02-10 22:26:44,767 INFO L226 Difference]: Without dead ends: 12966 [2022-02-10 22:26:44,768 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 279 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=334, Invalid=1388, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 22:26:44,768 INFO L934 BasicCegarLoop]: 327 mSDtfsCounter, 964 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:44,769 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [964 Valid, 2858 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 22:26:44,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12966 states. [2022-02-10 22:26:44,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12966 to 10881. [2022-02-10 22:26:44,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10881 states, 10880 states have (on average 2.8889705882352943) internal successors, (31432), 10880 states have internal predecessors, (31432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:44,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10881 states to 10881 states and 31432 transitions. [2022-02-10 22:26:44,990 INFO L78 Accepts]: Start accepts. Automaton has 10881 states and 31432 transitions. Word has length 148 [2022-02-10 22:26:44,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:44,990 INFO L470 AbstractCegarLoop]: Abstraction has 10881 states and 31432 transitions. [2022-02-10 22:26:44,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:44,991 INFO L276 IsEmpty]: Start isEmpty. Operand 10881 states and 31432 transitions. [2022-02-10 22:26:45,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-02-10 22:26:45,006 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:45,006 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:45,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-10 22:26:45,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:26:45,207 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:45,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:45,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1663070419, now seen corresponding path program 2 times [2022-02-10 22:26:45,208 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:45,208 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839116314] [2022-02-10 22:26:45,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:45,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:45,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:45,376 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:45,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839116314] [2022-02-10 22:26:45,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839116314] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:26:45,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663483356] [2022-02-10 22:26:45,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:26:45,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:26:45,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:26:45,378 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:26:45,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 22:26:45,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-02-10 22:26:45,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:26:45,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 22:26:45,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:26:45,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:26:45,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-10 22:26:45,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663483356] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:45,913 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-10 22:26:45,913 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15] total 27 [2022-02-10 22:26:45,913 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297796767] [2022-02-10 22:26:45,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:45,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 22:26:45,913 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:45,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 22:26:45,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-02-10 22:26:45,914 INFO L87 Difference]: Start difference. First operand 10881 states and 31432 transitions. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:46,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:46,358 INFO L93 Difference]: Finished difference Result 11334 states and 32482 transitions. [2022-02-10 22:26:46,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 22:26:46,358 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-02-10 22:26:46,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:46,380 INFO L225 Difference]: With dead ends: 11334 [2022-02-10 22:26:46,380 INFO L226 Difference]: Without dead ends: 11231 [2022-02-10 22:26:46,381 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=248, Invalid=1474, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 22:26:46,381 INFO L934 BasicCegarLoop]: 223 mSDtfsCounter, 426 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:46,382 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 1533 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:26:46,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11231 states. [2022-02-10 22:26:46,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11231 to 7794. [2022-02-10 22:26:46,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7794 states, 7793 states have (on average 2.847683818811754) internal successors, (22192), 7793 states have internal predecessors, (22192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:46,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7794 states to 7794 states and 22192 transitions. [2022-02-10 22:26:46,532 INFO L78 Accepts]: Start accepts. Automaton has 7794 states and 22192 transitions. Word has length 148 [2022-02-10 22:26:46,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:46,532 INFO L470 AbstractCegarLoop]: Abstraction has 7794 states and 22192 transitions. [2022-02-10 22:26:46,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:46,532 INFO L276 IsEmpty]: Start isEmpty. Operand 7794 states and 22192 transitions. [2022-02-10 22:26:46,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-02-10 22:26:46,543 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:46,543 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:46,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-10 22:26:46,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:26:46,744 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:46,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:46,744 INFO L85 PathProgramCache]: Analyzing trace with hash 2060043732, now seen corresponding path program 1 times [2022-02-10 22:26:46,744 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:46,744 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933483758] [2022-02-10 22:26:46,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:46,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:46,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:46,799 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:46,799 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933483758] [2022-02-10 22:26:46,799 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933483758] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:46,799 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:46,799 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-10 22:26:46,799 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983129477] [2022-02-10 22:26:46,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:46,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 22:26:46,800 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:46,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 22:26:46,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:26:46,800 INFO L87 Difference]: Start difference. First operand 7794 states and 22192 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:46,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:46,914 INFO L93 Difference]: Finished difference Result 9154 states and 25619 transitions. [2022-02-10 22:26:46,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 22:26:46,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2022-02-10 22:26:46,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:46,931 INFO L225 Difference]: With dead ends: 9154 [2022-02-10 22:26:46,932 INFO L226 Difference]: Without dead ends: 9032 [2022-02-10 22:26:46,932 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-02-10 22:26:46,932 INFO L934 BasicCegarLoop]: 220 mSDtfsCounter, 220 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:46,932 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 1059 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:26:46,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9032 states. [2022-02-10 22:26:47,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9032 to 8431. [2022-02-10 22:26:47,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8431 states, 8430 states have (on average 2.82502965599051) internal successors, (23815), 8430 states have internal predecessors, (23815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:47,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8431 states to 8431 states and 23815 transitions. [2022-02-10 22:26:47,066 INFO L78 Accepts]: Start accepts. Automaton has 8431 states and 23815 transitions. Word has length 154 [2022-02-10 22:26:47,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:47,066 INFO L470 AbstractCegarLoop]: Abstraction has 8431 states and 23815 transitions. [2022-02-10 22:26:47,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:47,066 INFO L276 IsEmpty]: Start isEmpty. Operand 8431 states and 23815 transitions. [2022-02-10 22:26:47,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-02-10 22:26:47,077 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:47,078 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:47,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-10 22:26:47,078 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:47,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:47,078 INFO L85 PathProgramCache]: Analyzing trace with hash -174767826, now seen corresponding path program 1 times [2022-02-10 22:26:47,078 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:47,078 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214415472] [2022-02-10 22:26:47,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:47,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:47,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:47,161 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:47,161 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214415472] [2022-02-10 22:26:47,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214415472] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:47,161 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:47,161 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-10 22:26:47,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590012848] [2022-02-10 22:26:47,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:47,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 22:26:47,162 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:47,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 22:26:47,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:26:47,162 INFO L87 Difference]: Start difference. First operand 8431 states and 23815 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:47,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:47,269 INFO L93 Difference]: Finished difference Result 7976 states and 22592 transitions. [2022-02-10 22:26:47,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 22:26:47,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2022-02-10 22:26:47,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:47,282 INFO L225 Difference]: With dead ends: 7976 [2022-02-10 22:26:47,283 INFO L226 Difference]: Without dead ends: 7766 [2022-02-10 22:26:47,283 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-02-10 22:26:47,283 INFO L934 BasicCegarLoop]: 203 mSDtfsCounter, 132 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:47,283 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 1058 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:26:47,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7766 states. [2022-02-10 22:26:47,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7766 to 7761. [2022-02-10 22:26:47,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7761 states, 7760 states have (on average 2.855283505154639) internal successors, (22157), 7760 states have internal predecessors, (22157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:47,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7761 states to 7761 states and 22157 transitions. [2022-02-10 22:26:47,395 INFO L78 Accepts]: Start accepts. Automaton has 7761 states and 22157 transitions. Word has length 154 [2022-02-10 22:26:47,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:47,395 INFO L470 AbstractCegarLoop]: Abstraction has 7761 states and 22157 transitions. [2022-02-10 22:26:47,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:47,395 INFO L276 IsEmpty]: Start isEmpty. Operand 7761 states and 22157 transitions. [2022-02-10 22:26:47,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-02-10 22:26:47,406 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:47,406 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:47,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-10 22:26:47,406 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:47,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:47,407 INFO L85 PathProgramCache]: Analyzing trace with hash -2131040572, now seen corresponding path program 1 times [2022-02-10 22:26:47,407 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:47,407 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023018834] [2022-02-10 22:26:47,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:47,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:47,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:47,517 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:47,518 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023018834] [2022-02-10 22:26:47,518 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023018834] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:26:47,518 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123622568] [2022-02-10 22:26:47,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:47,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:26:47,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:26:47,525 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:26:47,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 22:26:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:47,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 22:26:47,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:26:47,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:47,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:26:48,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:26:48,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123622568] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 22:26:48,385 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 22:26:48,385 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-02-10 22:26:48,385 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368011846] [2022-02-10 22:26:48,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:48,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 22:26:48,385 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:48,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 22:26:48,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2022-02-10 22:26:48,386 INFO L87 Difference]: Start difference. First operand 7761 states and 22157 transitions. Second operand has 11 states, 11 states have (on average 14.090909090909092) internal successors, (155), 11 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:48,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:48,627 INFO L93 Difference]: Finished difference Result 9967 states and 27609 transitions. [2022-02-10 22:26:48,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 22:26:48,627 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.090909090909092) internal successors, (155), 11 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-02-10 22:26:48,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:48,645 INFO L225 Difference]: With dead ends: 9967 [2022-02-10 22:26:48,645 INFO L226 Difference]: Without dead ends: 9967 [2022-02-10 22:26:48,646 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 297 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=268, Invalid=724, Unknown=0, NotChecked=0, Total=992 [2022-02-10 22:26:48,646 INFO L934 BasicCegarLoop]: 364 mSDtfsCounter, 1131 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:48,646 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1131 Valid, 1024 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:26:48,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9967 states. [2022-02-10 22:26:48,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9967 to 7947. [2022-02-10 22:26:48,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7947 states, 7946 states have (on average 2.8492323181474957) internal successors, (22640), 7946 states have internal predecessors, (22640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:48,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7947 states to 7947 states and 22640 transitions. [2022-02-10 22:26:48,787 INFO L78 Accepts]: Start accepts. Automaton has 7947 states and 22640 transitions. Word has length 155 [2022-02-10 22:26:48,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:48,787 INFO L470 AbstractCegarLoop]: Abstraction has 7947 states and 22640 transitions. [2022-02-10 22:26:48,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.090909090909092) internal successors, (155), 11 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:48,788 INFO L276 IsEmpty]: Start isEmpty. Operand 7947 states and 22640 transitions. [2022-02-10 22:26:48,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-02-10 22:26:48,799 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:48,799 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:48,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-10 22:26:48,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-02-10 22:26:49,000 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:49,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:49,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1234806942, now seen corresponding path program 1 times [2022-02-10 22:26:49,000 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:49,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981595146] [2022-02-10 22:26:49,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:49,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:26:49,047 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:49,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981595146] [2022-02-10 22:26:49,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981595146] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:49,047 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:49,047 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-10 22:26:49,047 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688999530] [2022-02-10 22:26:49,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:49,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 22:26:49,047 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:49,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 22:26:49,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:26:49,048 INFO L87 Difference]: Start difference. First operand 7947 states and 22640 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:49,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:49,142 INFO L93 Difference]: Finished difference Result 5780 states and 15833 transitions. [2022-02-10 22:26:49,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 22:26:49,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-02-10 22:26:49,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:49,152 INFO L225 Difference]: With dead ends: 5780 [2022-02-10 22:26:49,152 INFO L226 Difference]: Without dead ends: 5658 [2022-02-10 22:26:49,153 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-02-10 22:26:49,153 INFO L934 BasicCegarLoop]: 219 mSDtfsCounter, 625 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:49,153 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 795 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:26:49,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5658 states. [2022-02-10 22:26:49,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5658 to 5257. [2022-02-10 22:26:49,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5256 states have (on average 2.776826484018265) internal successors, (14595), 5256 states have internal predecessors, (14595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:49,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 14595 transitions. [2022-02-10 22:26:49,225 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 14595 transitions. Word has length 161 [2022-02-10 22:26:49,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:49,226 INFO L470 AbstractCegarLoop]: Abstraction has 5257 states and 14595 transitions. [2022-02-10 22:26:49,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:49,226 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 14595 transitions. [2022-02-10 22:26:49,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-02-10 22:26:49,233 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:49,233 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:49,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-10 22:26:49,233 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:49,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:49,233 INFO L85 PathProgramCache]: Analyzing trace with hash 825348796, now seen corresponding path program 1 times [2022-02-10 22:26:49,233 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:49,233 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228609814] [2022-02-10 22:26:49,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:49,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:49,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:26:49,304 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:49,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228609814] [2022-02-10 22:26:49,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228609814] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:49,304 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:49,305 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-10 22:26:49,305 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131541677] [2022-02-10 22:26:49,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:49,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 22:26:49,305 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:49,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 22:26:49,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:26:49,305 INFO L87 Difference]: Start difference. First operand 5257 states and 14595 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:49,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:49,402 INFO L93 Difference]: Finished difference Result 4602 states and 12806 transitions. [2022-02-10 22:26:49,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 22:26:49,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-02-10 22:26:49,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:49,409 INFO L225 Difference]: With dead ends: 4602 [2022-02-10 22:26:49,409 INFO L226 Difference]: Without dead ends: 4425 [2022-02-10 22:26:49,409 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-02-10 22:26:49,409 INFO L934 BasicCegarLoop]: 199 mSDtfsCounter, 369 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:49,409 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 832 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:26:49,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4425 states. [2022-02-10 22:26:49,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4425 to 4420. [2022-02-10 22:26:49,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4420 states, 4419 states have (on average 2.807196198234895) internal successors, (12405), 4419 states have internal predecessors, (12405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:49,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 12405 transitions. [2022-02-10 22:26:49,464 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 12405 transitions. Word has length 161 [2022-02-10 22:26:49,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:49,464 INFO L470 AbstractCegarLoop]: Abstraction has 4420 states and 12405 transitions. [2022-02-10 22:26:49,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:49,464 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 12405 transitions. [2022-02-10 22:26:49,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-02-10 22:26:49,469 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:49,469 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:49,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-10 22:26:49,470 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:49,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:49,470 INFO L85 PathProgramCache]: Analyzing trace with hash 2054720919, now seen corresponding path program 1 times [2022-02-10 22:26:49,470 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:49,470 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302922328] [2022-02-10 22:26:49,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:49,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:49,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:26:49,582 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:49,582 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302922328] [2022-02-10 22:26:49,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302922328] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:26:49,582 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854780688] [2022-02-10 22:26:49,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:49,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:26:49,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:26:49,583 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:26:49,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-10 22:26:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:49,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 22:26:49,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:26:49,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:26:49,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:26:50,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:26:50,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854780688] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 22:26:50,418 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 22:26:50,418 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-02-10 22:26:50,418 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223350261] [2022-02-10 22:26:50,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:50,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 22:26:50,419 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:50,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 22:26:50,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-02-10 22:26:50,419 INFO L87 Difference]: Start difference. First operand 4420 states and 12405 transitions. Second operand has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 11 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:50,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:50,588 INFO L93 Difference]: Finished difference Result 5196 states and 14341 transitions. [2022-02-10 22:26:50,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 22:26:50,588 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 11 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2022-02-10 22:26:50,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:50,596 INFO L225 Difference]: With dead ends: 5196 [2022-02-10 22:26:50,596 INFO L226 Difference]: Without dead ends: 5196 [2022-02-10 22:26:50,596 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 315 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=678, Unknown=0, NotChecked=0, Total=930 [2022-02-10 22:26:50,597 INFO L934 BasicCegarLoop]: 241 mSDtfsCounter, 708 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:50,597 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 658 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:26:50,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5196 states. [2022-02-10 22:26:50,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5196 to 4550. [2022-02-10 22:26:50,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4550 states, 4549 states have (on average 2.807210375906793) internal successors, (12770), 4549 states have internal predecessors, (12770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:50,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4550 states to 4550 states and 12770 transitions. [2022-02-10 22:26:50,655 INFO L78 Accepts]: Start accepts. Automaton has 4550 states and 12770 transitions. Word has length 164 [2022-02-10 22:26:50,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:50,656 INFO L470 AbstractCegarLoop]: Abstraction has 4550 states and 12770 transitions. [2022-02-10 22:26:50,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 11 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:50,656 INFO L276 IsEmpty]: Start isEmpty. Operand 4550 states and 12770 transitions. [2022-02-10 22:26:50,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-02-10 22:26:50,661 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:50,661 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:50,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-10 22:26:50,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:26:50,863 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:50,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:50,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1659523190, now seen corresponding path program 1 times [2022-02-10 22:26:50,863 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:50,863 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153631986] [2022-02-10 22:26:50,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:50,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:26:51,209 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:51,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153631986] [2022-02-10 22:26:51,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153631986] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:26:51,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514113518] [2022-02-10 22:26:51,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:51,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:26:51,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:26:51,210 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:26:51,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-10 22:26:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:51,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 22:26:51,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:26:52,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:26:52,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:26:53,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:26:53,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514113518] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:26:53,234 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:26:53,234 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 20] total 46 [2022-02-10 22:26:53,234 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963823791] [2022-02-10 22:26:53,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:26:53,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-10 22:26:53,235 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:53,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-10 22:26:53,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1784, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 22:26:53,236 INFO L87 Difference]: Start difference. First operand 4550 states and 12770 transitions. Second operand has 46 states, 46 states have (on average 7.782608695652174) internal successors, (358), 46 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:54,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:54,904 INFO L93 Difference]: Finished difference Result 18134 states and 50616 transitions. [2022-02-10 22:26:54,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-10 22:26:54,904 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 7.782608695652174) internal successors, (358), 46 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2022-02-10 22:26:54,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:54,938 INFO L225 Difference]: With dead ends: 18134 [2022-02-10 22:26:54,939 INFO L226 Difference]: Without dead ends: 17924 [2022-02-10 22:26:54,940 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 319 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1307 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1157, Invalid=4849, Unknown=0, NotChecked=0, Total=6006 [2022-02-10 22:26:54,940 INFO L934 BasicCegarLoop]: 335 mSDtfsCounter, 2375 mSDsluCounter, 7334 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2375 SdHoareTripleChecker+Valid, 7423 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:54,940 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2375 Valid, 7423 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1598 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 22:26:54,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17924 states. [2022-02-10 22:26:55,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17924 to 8265. [2022-02-10 22:26:55,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8265 states, 8264 states have (on average 2.8457163601161666) internal successors, (23517), 8264 states have internal predecessors, (23517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:55,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8265 states to 8265 states and 23517 transitions. [2022-02-10 22:26:55,132 INFO L78 Accepts]: Start accepts. Automaton has 8265 states and 23517 transitions. Word has length 173 [2022-02-10 22:26:55,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:55,132 INFO L470 AbstractCegarLoop]: Abstraction has 8265 states and 23517 transitions. [2022-02-10 22:26:55,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 7.782608695652174) internal successors, (358), 46 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:55,132 INFO L276 IsEmpty]: Start isEmpty. Operand 8265 states and 23517 transitions. [2022-02-10 22:26:55,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:26:55,146 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:55,146 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:55,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-02-10 22:26:55,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:26:55,347 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:55,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:55,347 INFO L85 PathProgramCache]: Analyzing trace with hash -130323262, now seen corresponding path program 1 times [2022-02-10 22:26:55,347 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:55,347 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189209789] [2022-02-10 22:26:55,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:55,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:55,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:26:55,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:55,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189209789] [2022-02-10 22:26:55,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189209789] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:26:55,692 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:26:55,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:26:55,692 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963466676] [2022-02-10 22:26:55,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:26:55,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:26:55,693 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:55,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:26:55,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:26:55,693 INFO L87 Difference]: Start difference. First operand 8265 states and 23517 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:56,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:56,430 INFO L93 Difference]: Finished difference Result 20121 states and 57525 transitions. [2022-02-10 22:26:56,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 22:26:56,431 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:26:56,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:56,469 INFO L225 Difference]: With dead ends: 20121 [2022-02-10 22:26:56,470 INFO L226 Difference]: Without dead ends: 20121 [2022-02-10 22:26:56,470 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=429, Invalid=1293, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 22:26:56,471 INFO L934 BasicCegarLoop]: 399 mSDtfsCounter, 1371 mSDsluCounter, 3406 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 3715 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:56,471 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1371 Valid, 3715 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:26:56,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20121 states. [2022-02-10 22:26:56,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20121 to 8909. [2022-02-10 22:26:56,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8909 states, 8908 states have (on average 2.8431746744499327) internal successors, (25327), 8908 states have internal predecessors, (25327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:56,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8909 states to 8909 states and 25327 transitions. [2022-02-10 22:26:56,686 INFO L78 Accepts]: Start accepts. Automaton has 8909 states and 25327 transitions. Word has length 177 [2022-02-10 22:26:56,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:26:56,686 INFO L470 AbstractCegarLoop]: Abstraction has 8909 states and 25327 transitions. [2022-02-10 22:26:56,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:56,686 INFO L276 IsEmpty]: Start isEmpty. Operand 8909 states and 25327 transitions. [2022-02-10 22:26:56,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:26:56,700 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:26:56,700 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:26:56,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-10 22:26:56,700 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:26:56,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:26:56,700 INFO L85 PathProgramCache]: Analyzing trace with hash 778847230, now seen corresponding path program 1 times [2022-02-10 22:26:56,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:26:56,701 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978926662] [2022-02-10 22:26:56,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:56,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:26:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:57,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:26:57,010 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:26:57,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978926662] [2022-02-10 22:26:57,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978926662] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:26:57,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865404103] [2022-02-10 22:26:57,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:26:57,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:26:57,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:26:57,011 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:26:57,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-10 22:26:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:26:57,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-10 22:26:57,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:26:57,617 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:26:57,618 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2022-02-10 22:26:57,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:26:57,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:26:57,911 INFO L353 Elim1Store]: treesize reduction 56, result has 48.6 percent of original size [2022-02-10 22:26:57,911 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 59 [2022-02-10 22:26:58,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:26:58,045 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865404103] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:26:58,045 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:26:58,045 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 31 [2022-02-10 22:26:58,045 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783703291] [2022-02-10 22:26:58,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:26:58,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 22:26:58,046 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:26:58,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 22:26:58,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2022-02-10 22:26:58,046 INFO L87 Difference]: Start difference. First operand 8909 states and 25327 transitions. Second operand has 31 states, 31 states have (on average 9.451612903225806) internal successors, (293), 31 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:26:59,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:26:59,689 INFO L93 Difference]: Finished difference Result 29545 states and 84669 transitions. [2022-02-10 22:26:59,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-10 22:26:59,689 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.451612903225806) internal successors, (293), 31 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:26:59,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:26:59,752 INFO L225 Difference]: With dead ends: 29545 [2022-02-10 22:26:59,753 INFO L226 Difference]: Without dead ends: 29545 [2022-02-10 22:26:59,754 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 349 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1050, Invalid=3920, Unknown=0, NotChecked=0, Total=4970 [2022-02-10 22:26:59,754 INFO L934 BasicCegarLoop]: 559 mSDtfsCounter, 1992 mSDsluCounter, 6697 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 7122 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 614 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 22:26:59,754 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1992 Valid, 7122 Invalid, 2254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1618 Invalid, 0 Unknown, 614 Unchecked, 0.7s Time] [2022-02-10 22:26:59,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29545 states. [2022-02-10 22:27:00,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29545 to 11625. [2022-02-10 22:27:00,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11625 states, 11624 states have (on average 2.8681176875430143) internal successors, (33339), 11624 states have internal predecessors, (33339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:00,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11625 states to 11625 states and 33339 transitions. [2022-02-10 22:27:00,087 INFO L78 Accepts]: Start accepts. Automaton has 11625 states and 33339 transitions. Word has length 177 [2022-02-10 22:27:00,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:00,088 INFO L470 AbstractCegarLoop]: Abstraction has 11625 states and 33339 transitions. [2022-02-10 22:27:00,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.451612903225806) internal successors, (293), 31 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:00,088 INFO L276 IsEmpty]: Start isEmpty. Operand 11625 states and 33339 transitions. [2022-02-10 22:27:00,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:00,104 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:00,104 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:00,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-10 22:27:00,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-02-10 22:27:00,305 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:00,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:00,306 INFO L85 PathProgramCache]: Analyzing trace with hash 466177484, now seen corresponding path program 2 times [2022-02-10 22:27:00,306 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:00,306 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112839997] [2022-02-10 22:27:00,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:00,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:00,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:00,705 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:00,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112839997] [2022-02-10 22:27:00,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112839997] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:00,705 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:00,705 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:27:00,705 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341202111] [2022-02-10 22:27:00,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:00,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:27:00,706 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:00,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:27:00,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:27:00,706 INFO L87 Difference]: Start difference. First operand 11625 states and 33339 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:01,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:01,371 INFO L93 Difference]: Finished difference Result 23067 states and 66157 transitions. [2022-02-10 22:27:01,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 22:27:01,371 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:01,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:01,417 INFO L225 Difference]: With dead ends: 23067 [2022-02-10 22:27:01,418 INFO L226 Difference]: Without dead ends: 23067 [2022-02-10 22:27:01,418 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=312, Invalid=1020, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:27:01,418 INFO L934 BasicCegarLoop]: 360 mSDtfsCounter, 1049 mSDsluCounter, 2946 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:01,418 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1049 Valid, 3223 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:27:01,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23067 states. [2022-02-10 22:27:01,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23067 to 11799. [2022-02-10 22:27:01,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11799 states, 11798 states have (on average 2.8687065604339717) internal successors, (33845), 11798 states have internal predecessors, (33845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:01,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11799 states to 11799 states and 33845 transitions. [2022-02-10 22:27:01,681 INFO L78 Accepts]: Start accepts. Automaton has 11799 states and 33845 transitions. Word has length 177 [2022-02-10 22:27:01,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:01,681 INFO L470 AbstractCegarLoop]: Abstraction has 11799 states and 33845 transitions. [2022-02-10 22:27:01,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:01,681 INFO L276 IsEmpty]: Start isEmpty. Operand 11799 states and 33845 transitions. [2022-02-10 22:27:01,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:01,697 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:01,697 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:01,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-10 22:27:01,698 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:01,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:01,698 INFO L85 PathProgramCache]: Analyzing trace with hash -586655790, now seen corresponding path program 2 times [2022-02-10 22:27:01,698 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:01,698 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962363455] [2022-02-10 22:27:01,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:01,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:02,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:02,048 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:02,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962363455] [2022-02-10 22:27:02,048 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962363455] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:02,048 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:02,048 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:27:02,048 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229184889] [2022-02-10 22:27:02,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:02,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:27:02,049 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:02,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:27:02,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:27:02,049 INFO L87 Difference]: Start difference. First operand 11799 states and 33845 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:02,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:02,628 INFO L93 Difference]: Finished difference Result 23171 states and 66451 transitions. [2022-02-10 22:27:02,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 22:27:02,628 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:02,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:02,676 INFO L225 Difference]: With dead ends: 23171 [2022-02-10 22:27:02,677 INFO L226 Difference]: Without dead ends: 23171 [2022-02-10 22:27:02,677 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=307, Invalid=953, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 22:27:02,677 INFO L934 BasicCegarLoop]: 373 mSDtfsCounter, 1123 mSDsluCounter, 2817 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:02,678 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 3109 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:02,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23171 states. [2022-02-10 22:27:02,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23171 to 12037. [2022-02-10 22:27:02,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12037 states, 12036 states have (on average 2.8679793951478896) internal successors, (34519), 12036 states have internal predecessors, (34519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:02,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 34519 transitions. [2022-02-10 22:27:02,945 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 34519 transitions. Word has length 177 [2022-02-10 22:27:02,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:02,946 INFO L470 AbstractCegarLoop]: Abstraction has 12037 states and 34519 transitions. [2022-02-10 22:27:02,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:02,946 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 34519 transitions. [2022-02-10 22:27:02,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:02,964 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:02,964 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:02,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-10 22:27:02,964 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:02,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:02,964 INFO L85 PathProgramCache]: Analyzing trace with hash -859187188, now seen corresponding path program 3 times [2022-02-10 22:27:02,964 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:02,964 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698544027] [2022-02-10 22:27:02,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:02,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:03,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:03,320 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:03,320 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698544027] [2022-02-10 22:27:03,320 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698544027] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:03,320 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:03,320 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:27:03,320 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217882150] [2022-02-10 22:27:03,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:03,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:27:03,320 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:03,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:27:03,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:27:03,321 INFO L87 Difference]: Start difference. First operand 12037 states and 34519 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:03,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:03,891 INFO L93 Difference]: Finished difference Result 23085 states and 66203 transitions. [2022-02-10 22:27:03,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:27:03,891 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:03,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:03,937 INFO L225 Difference]: With dead ends: 23085 [2022-02-10 22:27:03,937 INFO L226 Difference]: Without dead ends: 23085 [2022-02-10 22:27:03,938 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:27:03,938 INFO L934 BasicCegarLoop]: 364 mSDtfsCounter, 1168 mSDsluCounter, 2436 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 2739 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:03,938 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1168 Valid, 2739 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:03,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23085 states. [2022-02-10 22:27:04,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23085 to 12037. [2022-02-10 22:27:04,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12037 states, 12036 states have (on average 2.8679793951478896) internal successors, (34519), 12036 states have internal predecessors, (34519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:04,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 34519 transitions. [2022-02-10 22:27:04,209 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 34519 transitions. Word has length 177 [2022-02-10 22:27:04,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:04,209 INFO L470 AbstractCegarLoop]: Abstraction has 12037 states and 34519 transitions. [2022-02-10 22:27:04,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:04,209 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 34519 transitions. [2022-02-10 22:27:04,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:04,226 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:04,226 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:04,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-10 22:27:04,226 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:04,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:04,226 INFO L85 PathProgramCache]: Analyzing trace with hash -395612446, now seen corresponding path program 1 times [2022-02-10 22:27:04,226 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:04,226 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096597791] [2022-02-10 22:27:04,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:04,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:04,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:04,601 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:04,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096597791] [2022-02-10 22:27:04,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096597791] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:04,601 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:04,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:27:04,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840020010] [2022-02-10 22:27:04,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:04,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:27:04,603 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:04,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:27:04,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:27:04,603 INFO L87 Difference]: Start difference. First operand 12037 states and 34519 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:05,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:05,282 INFO L93 Difference]: Finished difference Result 23197 states and 66527 transitions. [2022-02-10 22:27:05,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:27:05,282 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:05,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:05,326 INFO L225 Difference]: With dead ends: 23197 [2022-02-10 22:27:05,326 INFO L226 Difference]: Without dead ends: 23197 [2022-02-10 22:27:05,327 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=326, Invalid=1006, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:27:05,327 INFO L934 BasicCegarLoop]: 384 mSDtfsCounter, 1137 mSDsluCounter, 3846 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 4134 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:05,327 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 4134 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:27:05,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23197 states. [2022-02-10 22:27:05,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23197 to 12037. [2022-02-10 22:27:05,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12037 states, 12036 states have (on average 2.8679793951478896) internal successors, (34519), 12036 states have internal predecessors, (34519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:05,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 34519 transitions. [2022-02-10 22:27:05,619 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 34519 transitions. Word has length 177 [2022-02-10 22:27:05,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:05,619 INFO L470 AbstractCegarLoop]: Abstraction has 12037 states and 34519 transitions. [2022-02-10 22:27:05,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:05,620 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 34519 transitions. [2022-02-10 22:27:05,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:05,636 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:05,636 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:05,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-10 22:27:05,636 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:05,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:05,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1801101254, now seen corresponding path program 4 times [2022-02-10 22:27:05,637 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:05,637 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997141446] [2022-02-10 22:27:05,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:05,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:05,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:05,968 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:05,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997141446] [2022-02-10 22:27:05,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997141446] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:05,968 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:05,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:27:05,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709203649] [2022-02-10 22:27:05,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:05,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:27:05,969 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:05,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:27:05,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:27:05,969 INFO L87 Difference]: Start difference. First operand 12037 states and 34519 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:06,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:06,617 INFO L93 Difference]: Finished difference Result 23477 states and 67305 transitions. [2022-02-10 22:27:06,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:27:06,618 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:06,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:06,663 INFO L225 Difference]: With dead ends: 23477 [2022-02-10 22:27:06,664 INFO L226 Difference]: Without dead ends: 23477 [2022-02-10 22:27:06,664 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=399, Invalid=1241, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 22:27:06,665 INFO L934 BasicCegarLoop]: 381 mSDtfsCounter, 927 mSDsluCounter, 3075 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 3381 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:06,665 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [927 Valid, 3381 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:06,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23477 states. [2022-02-10 22:27:06,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23477 to 12021. [2022-02-10 22:27:06,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12021 states, 12020 states have (on average 2.8681364392678868) internal successors, (34475), 12020 states have internal predecessors, (34475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:06,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12021 states to 12021 states and 34475 transitions. [2022-02-10 22:27:06,932 INFO L78 Accepts]: Start accepts. Automaton has 12021 states and 34475 transitions. Word has length 177 [2022-02-10 22:27:06,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:06,933 INFO L470 AbstractCegarLoop]: Abstraction has 12021 states and 34475 transitions. [2022-02-10 22:27:06,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:06,933 INFO L276 IsEmpty]: Start isEmpty. Operand 12021 states and 34475 transitions. [2022-02-10 22:27:06,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:06,950 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:06,950 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:06,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-10 22:27:06,950 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:06,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:06,951 INFO L85 PathProgramCache]: Analyzing trace with hash 2095983646, now seen corresponding path program 2 times [2022-02-10 22:27:06,951 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:06,951 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81038305] [2022-02-10 22:27:06,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:06,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:07,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:07,323 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:07,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81038305] [2022-02-10 22:27:07,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81038305] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:07,324 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:07,324 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:27:07,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563854659] [2022-02-10 22:27:07,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:07,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:27:07,324 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:07,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:27:07,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:27:07,325 INFO L87 Difference]: Start difference. First operand 12021 states and 34475 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:08,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:08,026 INFO L93 Difference]: Finished difference Result 23261 states and 66703 transitions. [2022-02-10 22:27:08,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:27:08,026 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:08,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:08,075 INFO L225 Difference]: With dead ends: 23261 [2022-02-10 22:27:08,075 INFO L226 Difference]: Without dead ends: 23261 [2022-02-10 22:27:08,075 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=391, Invalid=1169, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 22:27:08,076 INFO L934 BasicCegarLoop]: 368 mSDtfsCounter, 1039 mSDsluCounter, 3342 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 3628 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:08,076 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 3628 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:27:08,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23261 states. [2022-02-10 22:27:08,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23261 to 12037. [2022-02-10 22:27:08,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12037 states, 12036 states have (on average 2.8679793951478896) internal successors, (34519), 12036 states have internal predecessors, (34519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:08,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 34519 transitions. [2022-02-10 22:27:08,356 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 34519 transitions. Word has length 177 [2022-02-10 22:27:08,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:08,356 INFO L470 AbstractCegarLoop]: Abstraction has 12037 states and 34519 transitions. [2022-02-10 22:27:08,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:08,357 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 34519 transitions. [2022-02-10 22:27:08,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:08,374 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:08,374 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:08,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-10 22:27:08,374 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:08,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:08,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1620224, now seen corresponding path program 3 times [2022-02-10 22:27:08,374 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:08,374 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472064100] [2022-02-10 22:27:08,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:08,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:08,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:08,754 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:08,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472064100] [2022-02-10 22:27:08,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472064100] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:08,754 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:08,754 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:27:08,754 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989456896] [2022-02-10 22:27:08,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:08,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:27:08,755 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:08,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:27:08,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:27:08,755 INFO L87 Difference]: Start difference. First operand 12037 states and 34519 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:09,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:09,483 INFO L93 Difference]: Finished difference Result 24125 states and 69175 transitions. [2022-02-10 22:27:09,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 22:27:09,484 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:09,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:09,534 INFO L225 Difference]: With dead ends: 24125 [2022-02-10 22:27:09,534 INFO L226 Difference]: Without dead ends: 24125 [2022-02-10 22:27:09,535 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=423, Invalid=1299, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 22:27:09,535 INFO L934 BasicCegarLoop]: 404 mSDtfsCounter, 1098 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:09,536 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1098 Valid, 3076 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:09,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24125 states. [2022-02-10 22:27:09,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24125 to 12005. [2022-02-10 22:27:09,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12005 states, 12004 states have (on average 2.8682939020326557) internal successors, (34431), 12004 states have internal predecessors, (34431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:09,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12005 states to 12005 states and 34431 transitions. [2022-02-10 22:27:09,879 INFO L78 Accepts]: Start accepts. Automaton has 12005 states and 34431 transitions. Word has length 177 [2022-02-10 22:27:09,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:09,879 INFO L470 AbstractCegarLoop]: Abstraction has 12005 states and 34431 transitions. [2022-02-10 22:27:09,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:09,879 INFO L276 IsEmpty]: Start isEmpty. Operand 12005 states and 34431 transitions. [2022-02-10 22:27:09,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:09,896 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:09,896 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:09,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-10 22:27:09,897 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:09,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:09,897 INFO L85 PathProgramCache]: Analyzing trace with hash -464494442, now seen corresponding path program 3 times [2022-02-10 22:27:09,897 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:09,897 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817121108] [2022-02-10 22:27:09,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:09,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:10,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:10,237 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:10,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817121108] [2022-02-10 22:27:10,238 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817121108] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:10,238 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:10,238 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:27:10,238 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296333412] [2022-02-10 22:27:10,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:10,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:27:10,238 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:10,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:27:10,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:27:10,239 INFO L87 Difference]: Start difference. First operand 12005 states and 34431 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:10,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:10,901 INFO L93 Difference]: Finished difference Result 23945 states and 68795 transitions. [2022-02-10 22:27:10,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 22:27:10,902 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:10,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:10,950 INFO L225 Difference]: With dead ends: 23945 [2022-02-10 22:27:10,950 INFO L226 Difference]: Without dead ends: 23945 [2022-02-10 22:27:10,951 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=377, Invalid=1183, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 22:27:10,951 INFO L934 BasicCegarLoop]: 357 mSDtfsCounter, 1084 mSDsluCounter, 3114 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 3384 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:10,952 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1084 Valid, 3384 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:10,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23945 states. [2022-02-10 22:27:11,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23945 to 12163. [2022-02-10 22:27:11,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12163 states, 12162 states have (on average 2.867702680480184) internal successors, (34877), 12162 states have internal predecessors, (34877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:11,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12163 states to 12163 states and 34877 transitions. [2022-02-10 22:27:11,233 INFO L78 Accepts]: Start accepts. Automaton has 12163 states and 34877 transitions. Word has length 177 [2022-02-10 22:27:11,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:11,233 INFO L470 AbstractCegarLoop]: Abstraction has 12163 states and 34877 transitions. [2022-02-10 22:27:11,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:11,233 INFO L276 IsEmpty]: Start isEmpty. Operand 12163 states and 34877 transitions. [2022-02-10 22:27:11,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:11,251 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:11,252 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:11,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-10 22:27:11,252 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:11,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:11,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1731127998, now seen corresponding path program 5 times [2022-02-10 22:27:11,252 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:11,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645865090] [2022-02-10 22:27:11,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:11,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:11,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:11,588 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:11,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645865090] [2022-02-10 22:27:11,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645865090] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:11,588 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:11,588 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:27:11,589 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983446879] [2022-02-10 22:27:11,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:11,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:27:11,589 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:11,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:27:11,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:27:11,590 INFO L87 Difference]: Start difference. First operand 12163 states and 34877 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:12,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:12,310 INFO L93 Difference]: Finished difference Result 23735 states and 68113 transitions. [2022-02-10 22:27:12,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 22:27:12,311 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:12,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:12,360 INFO L225 Difference]: With dead ends: 23735 [2022-02-10 22:27:12,360 INFO L226 Difference]: Without dead ends: 23735 [2022-02-10 22:27:12,360 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=370, Invalid=1112, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:27:12,361 INFO L934 BasicCegarLoop]: 357 mSDtfsCounter, 853 mSDsluCounter, 3295 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 3565 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:12,361 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 3565 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:27:12,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23735 states. [2022-02-10 22:27:12,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23735 to 12195. [2022-02-10 22:27:12,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12195 states, 12194 states have (on average 2.867393800229621) internal successors, (34965), 12194 states have internal predecessors, (34965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:12,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12195 states to 12195 states and 34965 transitions. [2022-02-10 22:27:12,644 INFO L78 Accepts]: Start accepts. Automaton has 12195 states and 34965 transitions. Word has length 177 [2022-02-10 22:27:12,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:12,644 INFO L470 AbstractCegarLoop]: Abstraction has 12195 states and 34965 transitions. [2022-02-10 22:27:12,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:12,644 INFO L276 IsEmpty]: Start isEmpty. Operand 12195 states and 34965 transitions. [2022-02-10 22:27:12,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:12,662 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:12,662 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:12,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-10 22:27:12,662 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:12,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:12,662 INFO L85 PathProgramCache]: Analyzing trace with hash 2137801898, now seen corresponding path program 6 times [2022-02-10 22:27:12,662 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:12,662 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127875689] [2022-02-10 22:27:12,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:12,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:13,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:13,057 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:13,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127875689] [2022-02-10 22:27:13,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127875689] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:27:13,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486880166] [2022-02-10 22:27:13,057 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:27:13,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:27:13,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:27:13,058 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:27:13,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-10 22:27:13,162 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 22:27:13,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:27:13,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-10 22:27:13,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:27:13,681 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:27:13,682 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2022-02-10 22:27:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:13,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:27:13,944 INFO L353 Elim1Store]: treesize reduction 56, result has 48.6 percent of original size [2022-02-10 22:27:13,944 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 59 [2022-02-10 22:27:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:14,109 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486880166] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:27:14,109 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:27:14,109 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 31 [2022-02-10 22:27:14,109 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809367770] [2022-02-10 22:27:14,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:27:14,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 22:27:14,109 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:14,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 22:27:14,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2022-02-10 22:27:14,110 INFO L87 Difference]: Start difference. First operand 12195 states and 34965 transitions. Second operand has 31 states, 31 states have (on average 9.64516129032258) internal successors, (299), 31 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:16,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:16,392 INFO L93 Difference]: Finished difference Result 35572 states and 102436 transitions. [2022-02-10 22:27:16,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-10 22:27:16,393 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.64516129032258) internal successors, (299), 31 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:16,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:16,470 INFO L225 Difference]: With dead ends: 35572 [2022-02-10 22:27:16,471 INFO L226 Difference]: Without dead ends: 35572 [2022-02-10 22:27:16,472 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 348 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1336 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1236, Invalid=5084, Unknown=0, NotChecked=0, Total=6320 [2022-02-10 22:27:16,473 INFO L934 BasicCegarLoop]: 562 mSDtfsCounter, 1967 mSDsluCounter, 7848 mSDsCounter, 0 mSdLazyCounter, 2284 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 8196 SdHoareTripleChecker+Invalid, 2738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 430 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:16,473 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1967 Valid, 8196 Invalid, 2738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2284 Invalid, 0 Unknown, 430 Unchecked, 0.8s Time] [2022-02-10 22:27:16,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35572 states. [2022-02-10 22:27:16,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35572 to 14807. [2022-02-10 22:27:16,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14807 states, 14806 states have (on average 2.8810617317303797) internal successors, (42657), 14806 states have internal predecessors, (42657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:16,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14807 states to 14807 states and 42657 transitions. [2022-02-10 22:27:16,899 INFO L78 Accepts]: Start accepts. Automaton has 14807 states and 42657 transitions. Word has length 177 [2022-02-10 22:27:16,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:16,899 INFO L470 AbstractCegarLoop]: Abstraction has 14807 states and 42657 transitions. [2022-02-10 22:27:16,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.64516129032258) internal successors, (299), 31 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:16,899 INFO L276 IsEmpty]: Start isEmpty. Operand 14807 states and 42657 transitions. [2022-02-10 22:27:16,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:16,922 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:16,922 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:16,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-10 22:27:17,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:27:17,123 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:17,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:17,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1374048124, now seen corresponding path program 4 times [2022-02-10 22:27:17,123 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:17,123 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380437298] [2022-02-10 22:27:17,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:17,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:17,487 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:17,487 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380437298] [2022-02-10 22:27:17,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380437298] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:17,487 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:17,487 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:27:17,487 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407670836] [2022-02-10 22:27:17,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:17,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:27:17,487 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:17,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:27:17,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:27:17,488 INFO L87 Difference]: Start difference. First operand 14807 states and 42657 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:18,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:18,211 INFO L93 Difference]: Finished difference Result 26641 states and 76609 transitions. [2022-02-10 22:27:18,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:27:18,211 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:18,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:18,270 INFO L225 Difference]: With dead ends: 26641 [2022-02-10 22:27:18,270 INFO L226 Difference]: Without dead ends: 26641 [2022-02-10 22:27:18,271 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=334, Invalid=1072, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:27:18,271 INFO L934 BasicCegarLoop]: 360 mSDtfsCounter, 788 mSDsluCounter, 3442 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 3709 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:18,271 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 3709 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:27:18,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26641 states. [2022-02-10 22:27:18,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26641 to 14823. [2022-02-10 22:27:18,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14823 states, 14822 states have (on average 2.8819997301308864) internal successors, (42717), 14822 states have internal predecessors, (42717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:18,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14823 states to 14823 states and 42717 transitions. [2022-02-10 22:27:18,600 INFO L78 Accepts]: Start accepts. Automaton has 14823 states and 42717 transitions. Word has length 177 [2022-02-10 22:27:18,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:18,600 INFO L470 AbstractCegarLoop]: Abstraction has 14823 states and 42717 transitions. [2022-02-10 22:27:18,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:18,600 INFO L276 IsEmpty]: Start isEmpty. Operand 14823 states and 42717 transitions. [2022-02-10 22:27:18,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:18,623 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:18,623 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:18,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-10 22:27:18,623 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:18,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:18,624 INFO L85 PathProgramCache]: Analyzing trace with hash -152865438, now seen corresponding path program 1 times [2022-02-10 22:27:18,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:18,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484875990] [2022-02-10 22:27:18,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:18,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:18,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:18,971 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:18,971 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484875990] [2022-02-10 22:27:18,971 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484875990] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:18,971 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:18,971 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:27:18,971 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38942842] [2022-02-10 22:27:18,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:18,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:27:18,972 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:18,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:27:18,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:27:18,972 INFO L87 Difference]: Start difference. First operand 14823 states and 42717 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:19,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:19,578 INFO L93 Difference]: Finished difference Result 26381 states and 75879 transitions. [2022-02-10 22:27:19,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:27:19,578 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:19,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:19,634 INFO L225 Difference]: With dead ends: 26381 [2022-02-10 22:27:19,634 INFO L226 Difference]: Without dead ends: 26381 [2022-02-10 22:27:19,634 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=328, Invalid=1004, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:27:19,634 INFO L934 BasicCegarLoop]: 359 mSDtfsCounter, 1149 mSDsluCounter, 2776 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 3056 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:19,635 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 3056 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:19,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26381 states. [2022-02-10 22:27:19,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26381 to 14831. [2022-02-10 22:27:19,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14831 states, 14830 states have (on average 2.881928523263655) internal successors, (42739), 14830 states have internal predecessors, (42739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:19,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14831 states to 14831 states and 42739 transitions. [2022-02-10 22:27:19,968 INFO L78 Accepts]: Start accepts. Automaton has 14831 states and 42739 transitions. Word has length 177 [2022-02-10 22:27:19,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:19,969 INFO L470 AbstractCegarLoop]: Abstraction has 14831 states and 42739 transitions. [2022-02-10 22:27:19,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:19,969 INFO L276 IsEmpty]: Start isEmpty. Operand 14831 states and 42739 transitions. [2022-02-10 22:27:19,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:19,992 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:19,992 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:19,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-10 22:27:19,993 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:19,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:19,993 INFO L85 PathProgramCache]: Analyzing trace with hash 48683452, now seen corresponding path program 7 times [2022-02-10 22:27:19,993 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:19,993 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789423322] [2022-02-10 22:27:19,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:19,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:20,421 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:20,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789423322] [2022-02-10 22:27:20,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789423322] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:20,421 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:20,421 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:27:20,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141039266] [2022-02-10 22:27:20,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:20,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:27:20,422 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:20,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:27:20,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:27:20,422 INFO L87 Difference]: Start difference. First operand 14831 states and 42739 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:21,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:21,049 INFO L93 Difference]: Finished difference Result 26033 states and 74891 transitions. [2022-02-10 22:27:21,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:27:21,049 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:21,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:21,105 INFO L225 Difference]: With dead ends: 26033 [2022-02-10 22:27:21,105 INFO L226 Difference]: Without dead ends: 26033 [2022-02-10 22:27:21,105 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:27:21,106 INFO L934 BasicCegarLoop]: 345 mSDtfsCounter, 1231 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 3036 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:21,106 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1231 Valid, 3036 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:21,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26033 states. [2022-02-10 22:27:21,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26033 to 14823. [2022-02-10 22:27:21,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14823 states, 14822 states have (on average 2.8819997301308864) internal successors, (42717), 14822 states have internal predecessors, (42717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:21,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14823 states to 14823 states and 42717 transitions. [2022-02-10 22:27:21,418 INFO L78 Accepts]: Start accepts. Automaton has 14823 states and 42717 transitions. Word has length 177 [2022-02-10 22:27:21,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:21,418 INFO L470 AbstractCegarLoop]: Abstraction has 14823 states and 42717 transitions. [2022-02-10 22:27:21,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:21,418 INFO L276 IsEmpty]: Start isEmpty. Operand 14823 states and 42717 transitions. [2022-02-10 22:27:21,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:21,440 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:21,440 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:21,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-10 22:27:21,440 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:21,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:21,441 INFO L85 PathProgramCache]: Analyzing trace with hash 512258194, now seen corresponding path program 4 times [2022-02-10 22:27:21,441 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:21,441 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221981639] [2022-02-10 22:27:21,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:21,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:21,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:21,774 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:21,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221981639] [2022-02-10 22:27:21,775 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221981639] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:21,775 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:21,775 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:27:21,775 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236865208] [2022-02-10 22:27:21,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:21,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:27:21,775 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:21,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:27:21,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:27:21,776 INFO L87 Difference]: Start difference. First operand 14823 states and 42717 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:22,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:22,425 INFO L93 Difference]: Finished difference Result 26145 states and 75215 transitions. [2022-02-10 22:27:22,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:27:22,425 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:22,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:22,482 INFO L225 Difference]: With dead ends: 26145 [2022-02-10 22:27:22,482 INFO L226 Difference]: Without dead ends: 26145 [2022-02-10 22:27:22,483 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:27:22,483 INFO L934 BasicCegarLoop]: 345 mSDtfsCounter, 1375 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:22,483 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1375 Valid, 3191 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:22,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26145 states. [2022-02-10 22:27:22,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26145 to 14807. [2022-02-10 22:27:22,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14807 states, 14806 states have (on average 2.8810617317303797) internal successors, (42657), 14806 states have internal predecessors, (42657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:22,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14807 states to 14807 states and 42657 transitions. [2022-02-10 22:27:22,828 INFO L78 Accepts]: Start accepts. Automaton has 14807 states and 42657 transitions. Word has length 177 [2022-02-10 22:27:22,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:22,828 INFO L470 AbstractCegarLoop]: Abstraction has 14807 states and 42657 transitions. [2022-02-10 22:27:22,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:22,829 INFO L276 IsEmpty]: Start isEmpty. Operand 14807 states and 42657 transitions. [2022-02-10 22:27:22,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:22,851 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:22,851 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:22,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-10 22:27:22,852 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:22,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:22,852 INFO L85 PathProgramCache]: Analyzing trace with hash -301873108, now seen corresponding path program 5 times [2022-02-10 22:27:22,852 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:22,852 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127256974] [2022-02-10 22:27:22,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:22,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:23,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:23,200 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:23,200 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127256974] [2022-02-10 22:27:23,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127256974] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:23,200 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:23,200 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:27:23,200 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277463448] [2022-02-10 22:27:23,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:23,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:27:23,201 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:23,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:27:23,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:27:23,201 INFO L87 Difference]: Start difference. First operand 14807 states and 42657 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:23,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:23,828 INFO L93 Difference]: Finished difference Result 26625 states and 76533 transitions. [2022-02-10 22:27:23,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:27:23,828 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:23,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:23,890 INFO L225 Difference]: With dead ends: 26625 [2022-02-10 22:27:23,890 INFO L226 Difference]: Without dead ends: 26625 [2022-02-10 22:27:23,891 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=335, Invalid=1071, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:27:23,891 INFO L934 BasicCegarLoop]: 362 mSDtfsCounter, 979 mSDsluCounter, 2782 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:23,891 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 3064 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:23,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26625 states. [2022-02-10 22:27:24,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26625 to 14839. [2022-02-10 22:27:24,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14839 states, 14838 states have (on average 2.882396549400189) internal successors, (42769), 14838 states have internal predecessors, (42769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:24,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14839 states to 14839 states and 42769 transitions. [2022-02-10 22:27:24,226 INFO L78 Accepts]: Start accepts. Automaton has 14839 states and 42769 transitions. Word has length 177 [2022-02-10 22:27:24,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:24,226 INFO L470 AbstractCegarLoop]: Abstraction has 14839 states and 42769 transitions. [2022-02-10 22:27:24,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:24,227 INFO L276 IsEmpty]: Start isEmpty. Operand 14839 states and 42769 transitions. [2022-02-10 22:27:24,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:24,249 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:24,250 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:24,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-10 22:27:24,250 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:24,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:24,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1828786670, now seen corresponding path program 2 times [2022-02-10 22:27:24,250 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:24,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126772165] [2022-02-10 22:27:24,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:24,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:24,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:24,632 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:24,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126772165] [2022-02-10 22:27:24,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126772165] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:24,632 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:24,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:27:24,632 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437800989] [2022-02-10 22:27:24,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:24,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:27:24,633 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:24,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:27:24,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:27:24,633 INFO L87 Difference]: Start difference. First operand 14839 states and 42769 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:25,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:25,226 INFO L93 Difference]: Finished difference Result 26373 states and 75825 transitions. [2022-02-10 22:27:25,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:27:25,227 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:25,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:25,288 INFO L225 Difference]: With dead ends: 26373 [2022-02-10 22:27:25,289 INFO L226 Difference]: Without dead ends: 26373 [2022-02-10 22:27:25,289 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:27:25,289 INFO L934 BasicCegarLoop]: 361 mSDtfsCounter, 1091 mSDsluCounter, 2618 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 2904 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:25,289 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1091 Valid, 2904 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:25,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26373 states. [2022-02-10 22:27:25,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26373 to 14855. [2022-02-10 22:27:25,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14855 states, 14854 states have (on average 2.882253938333109) internal successors, (42813), 14854 states have internal predecessors, (42813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:25,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14855 states to 14855 states and 42813 transitions. [2022-02-10 22:27:25,643 INFO L78 Accepts]: Start accepts. Automaton has 14855 states and 42813 transitions. Word has length 177 [2022-02-10 22:27:25,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:25,643 INFO L470 AbstractCegarLoop]: Abstraction has 14855 states and 42813 transitions. [2022-02-10 22:27:25,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:25,643 INFO L276 IsEmpty]: Start isEmpty. Operand 14855 states and 42813 transitions. [2022-02-10 22:27:25,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:25,670 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:25,670 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:25,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-10 22:27:25,670 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:25,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:25,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1627237780, now seen corresponding path program 8 times [2022-02-10 22:27:25,671 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:25,671 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452164945] [2022-02-10 22:27:25,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:25,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:26,007 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:26,007 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452164945] [2022-02-10 22:27:26,007 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452164945] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:26,007 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:26,007 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:27:26,007 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102219431] [2022-02-10 22:27:26,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:26,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:27:26,007 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:26,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:27:26,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:27:26,008 INFO L87 Difference]: Start difference. First operand 14855 states and 42813 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:26,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:26,711 INFO L93 Difference]: Finished difference Result 26041 states and 74881 transitions. [2022-02-10 22:27:26,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:27:26,711 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:26,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:26,769 INFO L225 Difference]: With dead ends: 26041 [2022-02-10 22:27:26,770 INFO L226 Difference]: Without dead ends: 26041 [2022-02-10 22:27:26,770 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=1122, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:27:26,770 INFO L934 BasicCegarLoop]: 349 mSDtfsCounter, 1281 mSDsluCounter, 3090 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:26,770 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1281 Valid, 3368 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:26,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26041 states. [2022-02-10 22:27:27,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26041 to 14855. [2022-02-10 22:27:27,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14855 states, 14854 states have (on average 2.882253938333109) internal successors, (42813), 14854 states have internal predecessors, (42813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:27,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14855 states to 14855 states and 42813 transitions. [2022-02-10 22:27:27,111 INFO L78 Accepts]: Start accepts. Automaton has 14855 states and 42813 transitions. Word has length 177 [2022-02-10 22:27:27,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:27,111 INFO L470 AbstractCegarLoop]: Abstraction has 14855 states and 42813 transitions. [2022-02-10 22:27:27,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:27,111 INFO L276 IsEmpty]: Start isEmpty. Operand 14855 states and 42813 transitions. [2022-02-10 22:27:27,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:27,134 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:27,134 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:27,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-10 22:27:27,135 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:27,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:27,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1163663038, now seen corresponding path program 5 times [2022-02-10 22:27:27,135 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:27,135 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319356335] [2022-02-10 22:27:27,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:27,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:27,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:27,496 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:27,496 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319356335] [2022-02-10 22:27:27,496 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319356335] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:27,496 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:27,496 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:27:27,496 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459712401] [2022-02-10 22:27:27,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:27,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:27:27,496 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:27,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:27:27,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:27:27,497 INFO L87 Difference]: Start difference. First operand 14855 states and 42813 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:28,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:28,085 INFO L93 Difference]: Finished difference Result 26161 states and 75227 transitions. [2022-02-10 22:27:28,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:27:28,085 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:28,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:28,141 INFO L225 Difference]: With dead ends: 26161 [2022-02-10 22:27:28,141 INFO L226 Difference]: Without dead ends: 26161 [2022-02-10 22:27:28,141 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=1053, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:27:28,141 INFO L934 BasicCegarLoop]: 369 mSDtfsCounter, 1103 mSDsluCounter, 2167 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:28,142 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 2480 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:28,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26161 states. [2022-02-10 22:27:28,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26161 to 14847. [2022-02-10 22:27:28,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14847 states, 14846 states have (on average 2.881247474067089) internal successors, (42775), 14846 states have internal predecessors, (42775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:28,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14847 states to 14847 states and 42775 transitions. [2022-02-10 22:27:28,464 INFO L78 Accepts]: Start accepts. Automaton has 14847 states and 42775 transitions. Word has length 177 [2022-02-10 22:27:28,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:28,464 INFO L470 AbstractCegarLoop]: Abstraction has 14847 states and 42775 transitions. [2022-02-10 22:27:28,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:28,464 INFO L276 IsEmpty]: Start isEmpty. Operand 14847 states and 42775 transitions. [2022-02-10 22:27:28,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:28,487 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:28,487 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:28,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-10 22:27:28,487 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:28,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:28,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1033050662, now seen corresponding path program 9 times [2022-02-10 22:27:28,487 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:28,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838135927] [2022-02-10 22:27:28,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:28,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:28,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:28,882 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:28,882 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838135927] [2022-02-10 22:27:28,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838135927] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:28,883 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:28,883 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:27:28,883 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864983089] [2022-02-10 22:27:28,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:28,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:27:28,883 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:28,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:27:28,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:27:28,884 INFO L87 Difference]: Start difference. First operand 14847 states and 42775 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:29,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:29,530 INFO L93 Difference]: Finished difference Result 26377 states and 75813 transitions. [2022-02-10 22:27:29,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:27:29,530 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:29,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:29,592 INFO L225 Difference]: With dead ends: 26377 [2022-02-10 22:27:29,593 INFO L226 Difference]: Without dead ends: 26377 [2022-02-10 22:27:29,593 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=399, Invalid=1241, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 22:27:29,593 INFO L934 BasicCegarLoop]: 362 mSDtfsCounter, 1346 mSDsluCounter, 2854 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:29,593 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1346 Valid, 3152 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:29,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26377 states. [2022-02-10 22:27:29,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26377 to 14831. [2022-02-10 22:27:29,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14831 states, 14830 states have (on average 2.881389076196898) internal successors, (42731), 14830 states have internal predecessors, (42731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:29,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14831 states to 14831 states and 42731 transitions. [2022-02-10 22:27:29,933 INFO L78 Accepts]: Start accepts. Automaton has 14831 states and 42731 transitions. Word has length 177 [2022-02-10 22:27:29,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:29,934 INFO L470 AbstractCegarLoop]: Abstraction has 14831 states and 42731 transitions. [2022-02-10 22:27:29,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:29,934 INFO L276 IsEmpty]: Start isEmpty. Operand 14831 states and 42731 transitions. [2022-02-10 22:27:29,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:29,956 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:29,956 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:29,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-10 22:27:29,957 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:29,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:29,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1327933054, now seen corresponding path program 6 times [2022-02-10 22:27:29,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:29,958 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812521000] [2022-02-10 22:27:29,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:29,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:30,282 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:30,282 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812521000] [2022-02-10 22:27:30,282 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812521000] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:30,282 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:30,282 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:27:30,282 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819502519] [2022-02-10 22:27:30,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:30,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:27:30,282 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:30,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:27:30,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:27:30,283 INFO L87 Difference]: Start difference. First operand 14831 states and 42731 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:30,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:30,959 INFO L93 Difference]: Finished difference Result 26169 states and 75233 transitions. [2022-02-10 22:27:30,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:27:30,960 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:30,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:31,018 INFO L225 Difference]: With dead ends: 26169 [2022-02-10 22:27:31,018 INFO L226 Difference]: Without dead ends: 26169 [2022-02-10 22:27:31,018 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=391, Invalid=1169, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 22:27:31,019 INFO L934 BasicCegarLoop]: 349 mSDtfsCounter, 1042 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 3255 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:31,019 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1042 Valid, 3255 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:31,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26169 states. [2022-02-10 22:27:31,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26169 to 14847. [2022-02-10 22:27:31,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14847 states, 14846 states have (on average 2.881247474067089) internal successors, (42775), 14846 states have internal predecessors, (42775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:31,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14847 states to 14847 states and 42775 transitions. [2022-02-10 22:27:31,370 INFO L78 Accepts]: Start accepts. Automaton has 14847 states and 42775 transitions. Word has length 177 [2022-02-10 22:27:31,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:31,370 INFO L470 AbstractCegarLoop]: Abstraction has 14847 states and 42775 transitions. [2022-02-10 22:27:31,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:31,370 INFO L276 IsEmpty]: Start isEmpty. Operand 14847 states and 42775 transitions. [2022-02-10 22:27:31,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:31,395 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:31,395 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:31,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-10 22:27:31,395 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:31,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:31,395 INFO L85 PathProgramCache]: Analyzing trace with hash -766430368, now seen corresponding path program 7 times [2022-02-10 22:27:31,395 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:31,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291220209] [2022-02-10 22:27:31,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:31,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:31,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:31,715 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:31,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291220209] [2022-02-10 22:27:31,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291220209] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:31,715 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:31,715 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:27:31,715 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103688440] [2022-02-10 22:27:31,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:31,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:27:31,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:31,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:27:31,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:27:31,716 INFO L87 Difference]: Start difference. First operand 14847 states and 42775 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:32,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:32,396 INFO L93 Difference]: Finished difference Result 27033 states and 77705 transitions. [2022-02-10 22:27:32,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 22:27:32,397 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:32,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:32,461 INFO L225 Difference]: With dead ends: 27033 [2022-02-10 22:27:32,461 INFO L226 Difference]: Without dead ends: 27033 [2022-02-10 22:27:32,462 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=423, Invalid=1299, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 22:27:32,462 INFO L934 BasicCegarLoop]: 385 mSDtfsCounter, 1051 mSDsluCounter, 2823 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:32,462 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 3142 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:32,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27033 states. [2022-02-10 22:27:32,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27033 to 14807. [2022-02-10 22:27:32,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14807 states, 14806 states have (on average 2.8810617317303797) internal successors, (42657), 14806 states have internal predecessors, (42657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:32,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14807 states to 14807 states and 42657 transitions. [2022-02-10 22:27:32,951 INFO L78 Accepts]: Start accepts. Automaton has 14807 states and 42657 transitions. Word has length 177 [2022-02-10 22:27:32,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:32,951 INFO L470 AbstractCegarLoop]: Abstraction has 14807 states and 42657 transitions. [2022-02-10 22:27:32,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:32,952 INFO L276 IsEmpty]: Start isEmpty. Operand 14807 states and 42657 transitions. [2022-02-10 22:27:32,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:32,973 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:32,973 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:32,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-10 22:27:32,973 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:32,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:32,974 INFO L85 PathProgramCache]: Analyzing trace with hash 482623248, now seen corresponding path program 6 times [2022-02-10 22:27:32,974 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:32,974 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929849159] [2022-02-10 22:27:32,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:32,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:33,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:33,298 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:33,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929849159] [2022-02-10 22:27:33,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929849159] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:33,299 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:33,299 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:27:33,299 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123129408] [2022-02-10 22:27:33,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:33,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:27:33,299 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:33,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:27:33,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:27:33,300 INFO L87 Difference]: Start difference. First operand 14807 states and 42657 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:34,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:34,019 INFO L93 Difference]: Finished difference Result 30614 states and 87966 transitions. [2022-02-10 22:27:34,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 22:27:34,019 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:34,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:34,087 INFO L225 Difference]: With dead ends: 30614 [2022-02-10 22:27:34,087 INFO L226 Difference]: Without dead ends: 30614 [2022-02-10 22:27:34,087 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=442, Invalid=1364, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 22:27:34,087 INFO L934 BasicCegarLoop]: 392 mSDtfsCounter, 1374 mSDsluCounter, 2777 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 3104 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:34,088 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1374 Valid, 3104 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:34,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30614 states. [2022-02-10 22:27:34,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30614 to 15091. [2022-02-10 22:27:34,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15091 states, 15090 states have (on average 2.8790589794565937) internal successors, (43445), 15090 states have internal predecessors, (43445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15091 states to 15091 states and 43445 transitions. [2022-02-10 22:27:34,472 INFO L78 Accepts]: Start accepts. Automaton has 15091 states and 43445 transitions. Word has length 177 [2022-02-10 22:27:34,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:34,472 INFO L470 AbstractCegarLoop]: Abstraction has 15091 states and 43445 transitions. [2022-02-10 22:27:34,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:34,472 INFO L276 IsEmpty]: Start isEmpty. Operand 15091 states and 43445 transitions. [2022-02-10 22:27:34,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:34,495 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:34,496 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:34,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-02-10 22:27:34,496 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:34,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:34,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1354846062, now seen corresponding path program 7 times [2022-02-10 22:27:34,496 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:34,496 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379896163] [2022-02-10 22:27:34,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:34,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:34,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:34,817 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:34,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379896163] [2022-02-10 22:27:34,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379896163] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:34,817 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:34,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:27:34,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152325486] [2022-02-10 22:27:34,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:34,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:27:34,817 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:34,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:27:34,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:27:34,818 INFO L87 Difference]: Start difference. First operand 15091 states and 43445 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:35,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:35,513 INFO L93 Difference]: Finished difference Result 27911 states and 80413 transitions. [2022-02-10 22:27:35,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:27:35,513 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:35,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:35,579 INFO L225 Difference]: With dead ends: 27911 [2022-02-10 22:27:35,579 INFO L226 Difference]: Without dead ends: 27911 [2022-02-10 22:27:35,579 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=396, Invalid=1244, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 22:27:35,580 INFO L934 BasicCegarLoop]: 397 mSDtfsCounter, 1182 mSDsluCounter, 2987 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 3308 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:35,580 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1182 Valid, 3308 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:35,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27911 states. [2022-02-10 22:27:35,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27911 to 15099. [2022-02-10 22:27:35,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15099 states, 15098 states have (on average 2.8795204662869254) internal successors, (43475), 15098 states have internal predecessors, (43475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:35,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15099 states to 15099 states and 43475 transitions. [2022-02-10 22:27:35,942 INFO L78 Accepts]: Start accepts. Automaton has 15099 states and 43475 transitions. Word has length 177 [2022-02-10 22:27:35,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:35,942 INFO L470 AbstractCegarLoop]: Abstraction has 15099 states and 43475 transitions. [2022-02-10 22:27:35,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:35,942 INFO L276 IsEmpty]: Start isEmpty. Operand 15099 states and 43475 transitions. [2022-02-10 22:27:35,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:35,966 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:35,966 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:35,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-02-10 22:27:35,966 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:35,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:35,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1218579082, now seen corresponding path program 3 times [2022-02-10 22:27:35,967 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:35,967 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668820803] [2022-02-10 22:27:35,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:35,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:36,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:36,309 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:36,309 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668820803] [2022-02-10 22:27:36,310 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668820803] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:36,310 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:36,310 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:27:36,310 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205049643] [2022-02-10 22:27:36,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:36,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:27:36,310 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:36,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:27:36,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:27:36,310 INFO L87 Difference]: Start difference. First operand 15099 states and 43475 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:36,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:36,963 INFO L93 Difference]: Finished difference Result 27361 states and 78781 transitions. [2022-02-10 22:27:36,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:27:36,963 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:36,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:37,023 INFO L225 Difference]: With dead ends: 27361 [2022-02-10 22:27:37,023 INFO L226 Difference]: Without dead ends: 27361 [2022-02-10 22:27:37,023 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=388, Invalid=1172, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 22:27:37,023 INFO L934 BasicCegarLoop]: 383 mSDtfsCounter, 909 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:37,024 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [909 Valid, 3132 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:37,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27361 states. [2022-02-10 22:27:37,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27361 to 15131. [2022-02-10 22:27:37,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15131 states, 15130 states have (on average 2.8792465300727033) internal successors, (43563), 15130 states have internal predecessors, (43563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:37,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15131 states to 15131 states and 43563 transitions. [2022-02-10 22:27:37,435 INFO L78 Accepts]: Start accepts. Automaton has 15131 states and 43563 transitions. Word has length 177 [2022-02-10 22:27:37,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:37,435 INFO L470 AbstractCegarLoop]: Abstraction has 15131 states and 43563 transitions. [2022-02-10 22:27:37,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:37,435 INFO L276 IsEmpty]: Start isEmpty. Operand 15131 states and 43563 transitions. [2022-02-10 22:27:37,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:37,459 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:37,459 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:37,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-02-10 22:27:37,460 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:37,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:37,460 INFO L85 PathProgramCache]: Analyzing trace with hash 24291170, now seen corresponding path program 4 times [2022-02-10 22:27:37,460 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:37,461 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662670082] [2022-02-10 22:27:37,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:37,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:37,789 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:37,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662670082] [2022-02-10 22:27:37,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662670082] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:27:37,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147347904] [2022-02-10 22:27:37,789 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:27:37,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:27:37,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:27:37,800 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:27:37,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-10 22:27:37,906 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:27:37,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:27:37,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 51 conjunts are in the unsatisfiable core [2022-02-10 22:27:37,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:27:38,434 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:27:38,599 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:27:38,698 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:27:38,917 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-02-10 22:27:38,917 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:27:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:27:38,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:27:41,138 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_996 (Array Int Int)) (~get1~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_996))) (let ((.cse1 (select .cse3 c_~get2~0.base)) (.cse0 (select .cse3 ~get1~0.base))) (or (= (select .cse0 c_~get1~0.offset) (select .cse1 c_~get2~0.offset)) (not (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse1 (+ c_~get2~0.offset .cse2)) (select .cse0 (+ c_~get1~0.offset .cse2))))))))) is different from false [2022-02-10 22:27:41,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-02-10 22:27:41,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147347904] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:27:41,247 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:27:41,247 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 46 [2022-02-10 22:27:41,248 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548904004] [2022-02-10 22:27:41,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:27:41,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-10 22:27:41,248 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:41,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-10 22:27:41,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1780, Unknown=5, NotChecked=86, Total=2070 [2022-02-10 22:27:41,249 INFO L87 Difference]: Start difference. First operand 15131 states and 43563 transitions. Second operand has 46 states, 46 states have (on average 8.108695652173912) internal successors, (373), 46 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:44,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:44,372 INFO L93 Difference]: Finished difference Result 31404 states and 90428 transitions. [2022-02-10 22:27:44,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-10 22:27:44,373 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 8.108695652173912) internal successors, (373), 46 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:44,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:44,442 INFO L225 Difference]: With dead ends: 31404 [2022-02-10 22:27:44,442 INFO L226 Difference]: Without dead ends: 31404 [2022-02-10 22:27:44,444 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 338 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2055 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1773, Invalid=6968, Unknown=5, NotChecked=184, Total=8930 [2022-02-10 22:27:44,444 INFO L934 BasicCegarLoop]: 451 mSDtfsCounter, 2683 mSDsluCounter, 8403 mSDsCounter, 0 mSdLazyCounter, 2602 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2683 SdHoareTripleChecker+Valid, 8627 SdHoareTripleChecker+Invalid, 3804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1162 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:44,444 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2683 Valid, 8627 Invalid, 3804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2602 Invalid, 0 Unknown, 1162 Unchecked, 1.0s Time] [2022-02-10 22:27:44,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31404 states. [2022-02-10 22:27:44,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31404 to 15099. [2022-02-10 22:27:44,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15099 states, 15098 states have (on average 2.8795204662869254) internal successors, (43475), 15098 states have internal predecessors, (43475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:44,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15099 states to 15099 states and 43475 transitions. [2022-02-10 22:27:44,820 INFO L78 Accepts]: Start accepts. Automaton has 15099 states and 43475 transitions. Word has length 177 [2022-02-10 22:27:44,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:44,820 INFO L470 AbstractCegarLoop]: Abstraction has 15099 states and 43475 transitions. [2022-02-10 22:27:44,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 8.108695652173912) internal successors, (373), 46 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:44,820 INFO L276 IsEmpty]: Start isEmpty. Operand 15099 states and 43475 transitions. [2022-02-10 22:27:44,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:44,842 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:44,842 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:44,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-10 22:27:45,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-02-10 22:27:45,043 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:45,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:45,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1101578668, now seen corresponding path program 8 times [2022-02-10 22:27:45,044 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:45,044 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243323095] [2022-02-10 22:27:45,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:45,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:45,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:45,390 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:45,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243323095] [2022-02-10 22:27:45,390 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243323095] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:45,390 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:45,390 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:27:45,390 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990742793] [2022-02-10 22:27:45,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:45,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:27:45,394 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:45,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:27:45,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:27:45,394 INFO L87 Difference]: Start difference. First operand 15099 states and 43475 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:46,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:46,047 INFO L93 Difference]: Finished difference Result 27477 states and 79051 transitions. [2022-02-10 22:27:46,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:27:46,048 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:46,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:46,106 INFO L225 Difference]: With dead ends: 27477 [2022-02-10 22:27:46,106 INFO L226 Difference]: Without dead ends: 27477 [2022-02-10 22:27:46,106 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:27:46,107 INFO L934 BasicCegarLoop]: 382 mSDtfsCounter, 1020 mSDsluCounter, 2871 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 3186 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:46,107 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 3186 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:46,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27477 states. [2022-02-10 22:27:46,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27477 to 15115. [2022-02-10 22:27:46,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15115 states, 15114 states have (on average 2.8804419743284373) internal successors, (43535), 15114 states have internal predecessors, (43535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:46,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15115 states to 15115 states and 43535 transitions. [2022-02-10 22:27:46,444 INFO L78 Accepts]: Start accepts. Automaton has 15115 states and 43535 transitions. Word has length 177 [2022-02-10 22:27:46,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:46,444 INFO L470 AbstractCegarLoop]: Abstraction has 15115 states and 43535 transitions. [2022-02-10 22:27:46,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:46,445 INFO L276 IsEmpty]: Start isEmpty. Operand 15115 states and 43535 transitions. [2022-02-10 22:27:46,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:46,467 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:46,467 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:46,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-02-10 22:27:46,467 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:46,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:46,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1666475066, now seen corresponding path program 5 times [2022-02-10 22:27:46,468 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:46,468 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678658285] [2022-02-10 22:27:46,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:46,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:46,789 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:46,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678658285] [2022-02-10 22:27:46,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678658285] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:46,789 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:46,789 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:27:46,789 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190165201] [2022-02-10 22:27:46,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:46,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:27:46,790 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:46,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:27:46,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:27:46,790 INFO L87 Difference]: Start difference. First operand 15115 states and 43535 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:47,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:47,364 INFO L93 Difference]: Finished difference Result 27233 states and 78373 transitions. [2022-02-10 22:27:47,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:27:47,365 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:47,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:47,422 INFO L225 Difference]: With dead ends: 27233 [2022-02-10 22:27:47,423 INFO L226 Difference]: Without dead ends: 27233 [2022-02-10 22:27:47,423 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:27:47,423 INFO L934 BasicCegarLoop]: 381 mSDtfsCounter, 873 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:47,423 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 2884 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:47,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27233 states. [2022-02-10 22:27:47,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27233 to 15123. [2022-02-10 22:27:47,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15123 states, 15122 states have (on average 2.880372966538818) internal successors, (43557), 15122 states have internal predecessors, (43557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:47,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15123 states to 15123 states and 43557 transitions. [2022-02-10 22:27:47,760 INFO L78 Accepts]: Start accepts. Automaton has 15123 states and 43557 transitions. Word has length 177 [2022-02-10 22:27:47,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:47,761 INFO L470 AbstractCegarLoop]: Abstraction has 15123 states and 43557 transitions. [2022-02-10 22:27:47,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:47,761 INFO L276 IsEmpty]: Start isEmpty. Operand 15123 states and 43557 transitions. [2022-02-10 22:27:47,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:47,785 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:47,785 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:47,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-02-10 22:27:47,785 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:47,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:47,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1868023956, now seen corresponding path program 10 times [2022-02-10 22:27:47,785 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:47,786 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391765130] [2022-02-10 22:27:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:47,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:48,173 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:48,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391765130] [2022-02-10 22:27:48,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391765130] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:48,174 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:48,174 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:27:48,174 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295956074] [2022-02-10 22:27:48,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:48,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:27:48,174 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:48,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:27:48,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:27:48,175 INFO L87 Difference]: Start difference. First operand 15123 states and 43557 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:48,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:48,827 INFO L93 Difference]: Finished difference Result 27005 states and 77715 transitions. [2022-02-10 22:27:48,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:27:48,827 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:48,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:48,887 INFO L225 Difference]: With dead ends: 27005 [2022-02-10 22:27:48,887 INFO L226 Difference]: Without dead ends: 27005 [2022-02-10 22:27:48,888 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=336, Invalid=1070, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:27:48,888 INFO L934 BasicCegarLoop]: 367 mSDtfsCounter, 1070 mSDsluCounter, 2937 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 3250 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:48,888 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1070 Valid, 3250 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:48,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27005 states. [2022-02-10 22:27:49,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27005 to 15115. [2022-02-10 22:27:49,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15115 states, 15114 states have (on average 2.8804419743284373) internal successors, (43535), 15114 states have internal predecessors, (43535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:49,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15115 states to 15115 states and 43535 transitions. [2022-02-10 22:27:49,234 INFO L78 Accepts]: Start accepts. Automaton has 15115 states and 43535 transitions. Word has length 177 [2022-02-10 22:27:49,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:49,235 INFO L470 AbstractCegarLoop]: Abstraction has 15115 states and 43535 transitions. [2022-02-10 22:27:49,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:49,235 INFO L276 IsEmpty]: Start isEmpty. Operand 15115 states and 43535 transitions. [2022-02-10 22:27:49,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:49,258 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:49,258 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:49,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-02-10 22:27:49,258 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:49,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:49,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1963368598, now seen corresponding path program 8 times [2022-02-10 22:27:49,259 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:49,259 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958179080] [2022-02-10 22:27:49,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:49,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:49,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:49,634 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:49,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958179080] [2022-02-10 22:27:49,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958179080] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:49,634 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:49,634 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:27:49,634 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692304696] [2022-02-10 22:27:49,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:49,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:27:49,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:49,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:27:49,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:27:49,635 INFO L87 Difference]: Start difference. First operand 15115 states and 43535 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:50,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:50,255 INFO L93 Difference]: Finished difference Result 26989 states and 77679 transitions. [2022-02-10 22:27:50,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:27:50,255 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:50,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:50,318 INFO L225 Difference]: With dead ends: 26989 [2022-02-10 22:27:50,318 INFO L226 Difference]: Without dead ends: 26989 [2022-02-10 22:27:50,319 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=330, Invalid=1002, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:27:50,319 INFO L934 BasicCegarLoop]: 386 mSDtfsCounter, 972 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 3239 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:50,319 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [972 Valid, 3239 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:50,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26989 states. [2022-02-10 22:27:50,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26989 to 15107. [2022-02-10 22:27:50,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15107 states, 15106 states have (on average 2.8789222825367404) internal successors, (43489), 15106 states have internal predecessors, (43489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:50,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15107 states to 15107 states and 43489 transitions. [2022-02-10 22:27:50,664 INFO L78 Accepts]: Start accepts. Automaton has 15107 states and 43489 transitions. Word has length 177 [2022-02-10 22:27:50,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:50,664 INFO L470 AbstractCegarLoop]: Abstraction has 15107 states and 43489 transitions. [2022-02-10 22:27:50,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:50,665 INFO L276 IsEmpty]: Start isEmpty. Operand 15107 states and 43489 transitions. [2022-02-10 22:27:50,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:50,688 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:50,688 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:50,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-02-10 22:27:50,688 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:50,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:50,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1840144822, now seen corresponding path program 6 times [2022-02-10 22:27:50,688 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:50,689 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505573394] [2022-02-10 22:27:50,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:50,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:51,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:51,003 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:51,003 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505573394] [2022-02-10 22:27:51,003 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505573394] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:51,004 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:51,004 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:27:51,004 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848241947] [2022-02-10 22:27:51,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:51,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:27:51,004 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:51,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:27:51,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:27:51,004 INFO L87 Difference]: Start difference. First operand 15107 states and 43489 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:51,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:51,690 INFO L93 Difference]: Finished difference Result 27625 states and 79443 transitions. [2022-02-10 22:27:51,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 22:27:51,691 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:51,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:51,753 INFO L225 Difference]: With dead ends: 27625 [2022-02-10 22:27:51,753 INFO L226 Difference]: Without dead ends: 27625 [2022-02-10 22:27:51,753 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=433, Invalid=1289, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 22:27:51,754 INFO L934 BasicCegarLoop]: 400 mSDtfsCounter, 881 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 3164 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:51,754 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 3164 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:51,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27625 states. [2022-02-10 22:27:52,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27625 to 15127. [2022-02-10 22:27:52,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15127 states, 15126 states have (on average 2.878553484067169) internal successors, (43541), 15126 states have internal predecessors, (43541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:52,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15127 states to 15127 states and 43541 transitions. [2022-02-10 22:27:52,109 INFO L78 Accepts]: Start accepts. Automaton has 15127 states and 43541 transitions. Word has length 177 [2022-02-10 22:27:52,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:52,109 INFO L470 AbstractCegarLoop]: Abstraction has 15127 states and 43541 transitions. [2022-02-10 22:27:52,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:52,109 INFO L276 IsEmpty]: Start isEmpty. Operand 15127 states and 43541 transitions. [2022-02-10 22:27:52,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:52,134 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:52,134 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:52,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-02-10 22:27:52,134 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:52,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:52,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1211952222, now seen corresponding path program 7 times [2022-02-10 22:27:52,135 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:52,135 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605545023] [2022-02-10 22:27:52,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:52,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:52,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:52,483 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:52,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605545023] [2022-02-10 22:27:52,483 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605545023] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:27:52,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199271304] [2022-02-10 22:27:52,483 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:27:52,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:27:52,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:27:52,496 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:27:52,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-10 22:27:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:52,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 60 conjunts are in the unsatisfiable core [2022-02-10 22:27:52,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:27:52,652 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:27:52,766 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-02-10 22:27:52,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-02-10 22:27:52,868 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:27:53,110 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-02-10 22:27:53,110 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-02-10 22:27:53,208 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:27:53,362 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:27:53,448 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:27:53,724 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-02-10 22:27:53,725 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:27:53,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:27:53,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:27:54,092 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1115 (Array Int Int)) (~get2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1115))) (let ((.cse2 (select .cse3 c_~get1~0.base)) (.cse0 (select .cse3 ~get2~0.base))) (or (not (let ((.cse1 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get2~0.offset .cse1)) (select .cse2 (+ c_~get1~0.offset .cse1))))) (= (select .cse2 c_~get1~0.offset) (select .cse0 c_~get2~0.offset)))))) is different from false [2022-02-10 22:27:54,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-02-10 22:27:54,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199271304] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:27:54,200 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:27:54,200 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 10] total 50 [2022-02-10 22:27:54,200 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308538863] [2022-02-10 22:27:54,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:27:54,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-10 22:27:54,201 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:54,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-10 22:27:54,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2162, Unknown=1, NotChecked=94, Total=2450 [2022-02-10 22:27:54,202 INFO L87 Difference]: Start difference. First operand 15127 states and 43541 transitions. Second operand has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:57,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:57,372 INFO L93 Difference]: Finished difference Result 33129 states and 95235 transitions. [2022-02-10 22:27:57,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-10 22:27:57,372 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:57,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:57,445 INFO L225 Difference]: With dead ends: 33129 [2022-02-10 22:27:57,446 INFO L226 Difference]: Without dead ends: 33129 [2022-02-10 22:27:57,452 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1826 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1765, Invalid=7358, Unknown=1, NotChecked=188, Total=9312 [2022-02-10 22:27:57,453 INFO L934 BasicCegarLoop]: 459 mSDtfsCounter, 3787 mSDsluCounter, 8253 mSDsCounter, 0 mSdLazyCounter, 2157 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3787 SdHoareTripleChecker+Valid, 8493 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1371 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:57,453 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3787 Valid, 8493 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2157 Invalid, 0 Unknown, 1371 Unchecked, 0.9s Time] [2022-02-10 22:27:57,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33129 states. [2022-02-10 22:27:57,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33129 to 15031. [2022-02-10 22:27:57,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15031 states, 15030 states have (on average 2.8793745841650034) internal successors, (43277), 15030 states have internal predecessors, (43277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:57,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15031 states to 15031 states and 43277 transitions. [2022-02-10 22:27:57,859 INFO L78 Accepts]: Start accepts. Automaton has 15031 states and 43277 transitions. Word has length 177 [2022-02-10 22:27:57,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:57,859 INFO L470 AbstractCegarLoop]: Abstraction has 15031 states and 43277 transitions. [2022-02-10 22:27:57,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:57,859 INFO L276 IsEmpty]: Start isEmpty. Operand 15031 states and 43277 transitions. [2022-02-10 22:27:57,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:57,882 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:57,882 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:57,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-10 22:27:58,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-02-10 22:27:58,083 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:58,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:58,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1165193162, now seen corresponding path program 9 times [2022-02-10 22:27:58,083 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:58,083 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127537101] [2022-02-10 22:27:58,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:58,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:58,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:58,449 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:58,449 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127537101] [2022-02-10 22:27:58,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127537101] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:58,449 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:58,449 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:27:58,449 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155004583] [2022-02-10 22:27:58,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:58,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:27:58,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:58,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:27:58,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:27:58,450 INFO L87 Difference]: Start difference. First operand 15031 states and 43277 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:59,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:27:59,168 INFO L93 Difference]: Finished difference Result 27887 states and 80315 transitions. [2022-02-10 22:27:59,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:27:59,168 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:27:59,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:27:59,229 INFO L225 Difference]: With dead ends: 27887 [2022-02-10 22:27:59,229 INFO L226 Difference]: Without dead ends: 27887 [2022-02-10 22:27:59,229 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=396, Invalid=1244, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 22:27:59,230 INFO L934 BasicCegarLoop]: 379 mSDtfsCounter, 1013 mSDsluCounter, 3363 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 3657 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:27:59,230 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1013 Valid, 3657 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:27:59,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27887 states. [2022-02-10 22:27:59,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27887 to 15031. [2022-02-10 22:27:59,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15031 states, 15030 states have (on average 2.8793745841650034) internal successors, (43277), 15030 states have internal predecessors, (43277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:59,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15031 states to 15031 states and 43277 transitions. [2022-02-10 22:27:59,580 INFO L78 Accepts]: Start accepts. Automaton has 15031 states and 43277 transitions. Word has length 177 [2022-02-10 22:27:59,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:27:59,580 INFO L470 AbstractCegarLoop]: Abstraction has 15031 states and 43277 transitions. [2022-02-10 22:27:59,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:27:59,580 INFO L276 IsEmpty]: Start isEmpty. Operand 15031 states and 43277 transitions. [2022-02-10 22:27:59,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:27:59,603 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:27:59,604 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:27:59,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-02-10 22:27:59,604 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:27:59,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:27:59,604 INFO L85 PathProgramCache]: Analyzing trace with hash 556348990, now seen corresponding path program 8 times [2022-02-10 22:27:59,604 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:27:59,604 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578686597] [2022-02-10 22:27:59,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:27:59,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:27:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:27:59,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:27:59,935 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:27:59,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578686597] [2022-02-10 22:27:59,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578686597] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:27:59,935 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:27:59,935 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:27:59,935 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813376317] [2022-02-10 22:27:59,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:27:59,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:27:59,935 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:27:59,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:27:59,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:27:59,936 INFO L87 Difference]: Start difference. First operand 15031 states and 43277 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:00,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:00,645 INFO L93 Difference]: Finished difference Result 27257 states and 78431 transitions. [2022-02-10 22:28:00,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:28:00,645 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:00,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:00,707 INFO L225 Difference]: With dead ends: 27257 [2022-02-10 22:28:00,707 INFO L226 Difference]: Without dead ends: 27257 [2022-02-10 22:28:00,707 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=388, Invalid=1172, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 22:28:00,708 INFO L934 BasicCegarLoop]: 366 mSDtfsCounter, 1068 mSDsluCounter, 3055 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 3346 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:00,708 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1068 Valid, 3346 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:28:00,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27257 states. [2022-02-10 22:28:01,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27257 to 15033. [2022-02-10 22:28:01,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15033 states, 15032 states have (on average 2.8792575838211816) internal successors, (43281), 15032 states have internal predecessors, (43281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:01,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15033 states to 15033 states and 43281 transitions. [2022-02-10 22:28:01,098 INFO L78 Accepts]: Start accepts. Automaton has 15033 states and 43281 transitions. Word has length 177 [2022-02-10 22:28:01,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:01,098 INFO L470 AbstractCegarLoop]: Abstraction has 15033 states and 43281 transitions. [2022-02-10 22:28:01,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:01,098 INFO L276 IsEmpty]: Start isEmpty. Operand 15033 states and 43281 transitions. [2022-02-10 22:28:01,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:01,122 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:01,122 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:01,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-02-10 22:28:01,123 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:01,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:01,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1799219242, now seen corresponding path program 9 times [2022-02-10 22:28:01,123 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:01,123 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153212856] [2022-02-10 22:28:01,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:01,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:01,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:01,435 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:01,435 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153212856] [2022-02-10 22:28:01,435 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153212856] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:28:01,435 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394737827] [2022-02-10 22:28:01,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:28:01,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:28:01,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:28:01,436 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:28:01,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-10 22:28:01,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 22:28:01,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:28:01,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-10 22:28:01,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:28:01,920 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-02-10 22:28:01,920 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:28:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:01,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:28:02,122 INFO L353 Elim1Store]: treesize reduction 56, result has 48.6 percent of original size [2022-02-10 22:28:02,122 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 60 [2022-02-10 22:28:02,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:02,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394737827] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:28:02,275 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:28:02,275 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 29 [2022-02-10 22:28:02,275 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389272064] [2022-02-10 22:28:02,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:28:02,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 22:28:02,276 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:02,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 22:28:02,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2022-02-10 22:28:02,276 INFO L87 Difference]: Start difference. First operand 15033 states and 43281 transitions. Second operand has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:04,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:04,554 INFO L93 Difference]: Finished difference Result 48460 states and 139331 transitions. [2022-02-10 22:28:04,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-10 22:28:04,555 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:04,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:04,665 INFO L225 Difference]: With dead ends: 48460 [2022-02-10 22:28:04,665 INFO L226 Difference]: Without dead ends: 48460 [2022-02-10 22:28:04,666 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 364 SyntacticMatches, 7 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2111 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1370, Invalid=5940, Unknown=0, NotChecked=0, Total=7310 [2022-02-10 22:28:04,666 INFO L934 BasicCegarLoop]: 432 mSDtfsCounter, 2164 mSDsluCounter, 5896 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2164 SdHoareTripleChecker+Valid, 6188 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 897 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:04,666 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2164 Valid, 6188 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1383 Invalid, 0 Unknown, 897 Unchecked, 0.6s Time] [2022-02-10 22:28:04,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48460 states. [2022-02-10 22:28:05,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48460 to 15441. [2022-02-10 22:28:05,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15441 states, 15440 states have (on average 2.8773963730569947) internal successors, (44427), 15440 states have internal predecessors, (44427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:05,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15441 states to 15441 states and 44427 transitions. [2022-02-10 22:28:05,210 INFO L78 Accepts]: Start accepts. Automaton has 15441 states and 44427 transitions. Word has length 177 [2022-02-10 22:28:05,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:05,210 INFO L470 AbstractCegarLoop]: Abstraction has 15441 states and 44427 transitions. [2022-02-10 22:28:05,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:05,211 INFO L276 IsEmpty]: Start isEmpty. Operand 15441 states and 44427 transitions. [2022-02-10 22:28:05,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:05,235 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:05,236 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:05,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-10 22:28:05,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-02-10 22:28:05,436 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:05,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:05,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1836155134, now seen corresponding path program 10 times [2022-02-10 22:28:05,437 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:05,437 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757838827] [2022-02-10 22:28:05,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:05,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:05,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:05,795 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:05,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757838827] [2022-02-10 22:28:05,795 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757838827] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:28:05,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242198858] [2022-02-10 22:28:05,796 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:28:05,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:28:05,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:28:05,797 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:28:05,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-10 22:28:05,906 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:28:05,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:28:05,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 51 conjunts are in the unsatisfiable core [2022-02-10 22:28:05,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:28:06,407 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:28:06,555 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:28:06,662 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:28:06,959 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-02-10 22:28:06,959 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:28:07,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:28:07,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:28:07,248 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_1215 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1215))) (let ((.cse0 (select .cse3 ~get1~0.base)) (.cse2 (select .cse3 c_~get2~0.base))) (or (not (let ((.cse1 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get1~0.offset .cse1)) (select .cse2 (+ c_~get2~0.offset .cse1))))) (= (select .cse0 c_~get1~0.offset) (select .cse2 c_~get2~0.offset)))))) is different from false [2022-02-10 22:28:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-02-10 22:28:07,351 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242198858] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:28:07,351 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:28:07,351 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 45 [2022-02-10 22:28:07,351 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393098178] [2022-02-10 22:28:07,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:28:07,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-10 22:28:07,352 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:07,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-10 22:28:07,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1698, Unknown=1, NotChecked=84, Total=1980 [2022-02-10 22:28:07,352 INFO L87 Difference]: Start difference. First operand 15441 states and 44427 transitions. Second operand has 45 states, 45 states have (on average 8.377777777777778) internal successors, (377), 45 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:09,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:09,648 INFO L93 Difference]: Finished difference Result 29274 states and 84130 transitions. [2022-02-10 22:28:09,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-10 22:28:09,648 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 8.377777777777778) internal successors, (377), 45 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:09,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:09,712 INFO L225 Difference]: With dead ends: 29274 [2022-02-10 22:28:09,712 INFO L226 Difference]: Without dead ends: 29274 [2022-02-10 22:28:09,713 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 340 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1449, Invalid=5526, Unknown=1, NotChecked=164, Total=7140 [2022-02-10 22:28:09,713 INFO L934 BasicCegarLoop]: 404 mSDtfsCounter, 2378 mSDsluCounter, 5806 mSDsCounter, 0 mSdLazyCounter, 1900 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 6062 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 943 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:09,713 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2378 Valid, 6062 Invalid, 2879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1900 Invalid, 0 Unknown, 943 Unchecked, 0.7s Time] [2022-02-10 22:28:09,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29274 states. [2022-02-10 22:28:10,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29274 to 14779. [2022-02-10 22:28:10,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14779 states, 14778 states have (on average 2.880159696846664) internal successors, (42563), 14778 states have internal predecessors, (42563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:10,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14779 states to 14779 states and 42563 transitions. [2022-02-10 22:28:10,091 INFO L78 Accepts]: Start accepts. Automaton has 14779 states and 42563 transitions. Word has length 177 [2022-02-10 22:28:10,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:10,091 INFO L470 AbstractCegarLoop]: Abstraction has 14779 states and 42563 transitions. [2022-02-10 22:28:10,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 8.377777777777778) internal successors, (377), 45 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:10,091 INFO L276 IsEmpty]: Start isEmpty. Operand 14779 states and 42563 transitions. [2022-02-10 22:28:10,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:10,114 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:10,114 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:10,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-10 22:28:10,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-02-10 22:28:10,315 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:10,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:10,316 INFO L85 PathProgramCache]: Analyzing trace with hash 673349404, now seen corresponding path program 10 times [2022-02-10 22:28:10,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:10,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866614466] [2022-02-10 22:28:10,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:10,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:10,659 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:10,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866614466] [2022-02-10 22:28:10,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866614466] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:28:10,659 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:28:10,659 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:28:10,659 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330945777] [2022-02-10 22:28:10,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:28:10,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:28:10,659 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:10,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:28:10,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:28:10,660 INFO L87 Difference]: Start difference. First operand 14779 states and 42563 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:11,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:11,312 INFO L93 Difference]: Finished difference Result 27295 states and 78547 transitions. [2022-02-10 22:28:11,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:28:11,312 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:11,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:11,372 INFO L225 Difference]: With dead ends: 27295 [2022-02-10 22:28:11,372 INFO L226 Difference]: Without dead ends: 27295 [2022-02-10 22:28:11,373 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=357, Invalid=1125, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:28:11,373 INFO L934 BasicCegarLoop]: 365 mSDtfsCounter, 914 mSDsluCounter, 2869 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 3166 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:11,373 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [914 Valid, 3166 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:28:11,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27295 states. [2022-02-10 22:28:11,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27295 to 14795. [2022-02-10 22:28:11,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14795 states, 14794 states have (on average 2.8811004461268084) internal successors, (42623), 14794 states have internal predecessors, (42623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:11,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14795 states to 14795 states and 42623 transitions. [2022-02-10 22:28:11,714 INFO L78 Accepts]: Start accepts. Automaton has 14795 states and 42623 transitions. Word has length 177 [2022-02-10 22:28:11,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:11,714 INFO L470 AbstractCegarLoop]: Abstraction has 14795 states and 42623 transitions. [2022-02-10 22:28:11,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:11,714 INFO L276 IsEmpty]: Start isEmpty. Operand 14795 states and 42623 transitions. [2022-02-10 22:28:11,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:11,736 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:11,736 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:11,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-02-10 22:28:11,737 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:11,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:11,737 INFO L85 PathProgramCache]: Analyzing trace with hash -853564158, now seen corresponding path program 11 times [2022-02-10 22:28:11,737 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:11,737 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563216959] [2022-02-10 22:28:11,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:11,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:12,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:12,117 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:12,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563216959] [2022-02-10 22:28:12,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563216959] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:28:12,117 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:28:12,117 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:28:12,117 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132691818] [2022-02-10 22:28:12,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:28:12,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:28:12,117 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:12,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:28:12,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:28:12,118 INFO L87 Difference]: Start difference. First operand 14795 states and 42623 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:12,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:12,844 INFO L93 Difference]: Finished difference Result 27035 states and 77817 transitions. [2022-02-10 22:28:12,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:28:12,844 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:12,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:12,903 INFO L225 Difference]: With dead ends: 27035 [2022-02-10 22:28:12,904 INFO L226 Difference]: Without dead ends: 27035 [2022-02-10 22:28:12,904 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=350, Invalid=1056, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:28:12,904 INFO L934 BasicCegarLoop]: 364 mSDtfsCounter, 1132 mSDsluCounter, 2423 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:12,904 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 2727 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:28:12,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27035 states. [2022-02-10 22:28:13,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27035 to 14803. [2022-02-10 22:28:13,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14803 states, 14802 states have (on average 2.8810295905958654) internal successors, (42645), 14802 states have internal predecessors, (42645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:13,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14803 states to 14803 states and 42645 transitions. [2022-02-10 22:28:13,236 INFO L78 Accepts]: Start accepts. Automaton has 14803 states and 42645 transitions. Word has length 177 [2022-02-10 22:28:13,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:13,236 INFO L470 AbstractCegarLoop]: Abstraction has 14803 states and 42645 transitions. [2022-02-10 22:28:13,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:13,237 INFO L276 IsEmpty]: Start isEmpty. Operand 14803 states and 42645 transitions. [2022-02-10 22:28:13,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:13,263 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:13,264 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:13,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-02-10 22:28:13,264 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:13,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:13,264 INFO L85 PathProgramCache]: Analyzing trace with hash -652015268, now seen corresponding path program 11 times [2022-02-10 22:28:13,264 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:13,264 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423519069] [2022-02-10 22:28:13,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:13,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:13,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:13,603 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:13,603 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423519069] [2022-02-10 22:28:13,603 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423519069] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:28:13,603 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:28:13,603 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:28:13,603 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978266510] [2022-02-10 22:28:13,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:28:13,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:28:13,603 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:13,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:28:13,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:28:13,604 INFO L87 Difference]: Start difference. First operand 14803 states and 42645 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:14,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:14,321 INFO L93 Difference]: Finished difference Result 26687 states and 76829 transitions. [2022-02-10 22:28:14,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:28:14,322 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:14,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:14,399 INFO L225 Difference]: With dead ends: 26687 [2022-02-10 22:28:14,400 INFO L226 Difference]: Without dead ends: 26687 [2022-02-10 22:28:14,400 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=1122, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:28:14,400 INFO L934 BasicCegarLoop]: 350 mSDtfsCounter, 932 mSDsluCounter, 3134 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 3423 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:14,400 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [932 Valid, 3423 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:28:14,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26687 states. [2022-02-10 22:28:14,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26687 to 14795. [2022-02-10 22:28:14,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14795 states, 14794 states have (on average 2.8811004461268084) internal successors, (42623), 14794 states have internal predecessors, (42623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:14,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14795 states to 14795 states and 42623 transitions. [2022-02-10 22:28:14,738 INFO L78 Accepts]: Start accepts. Automaton has 14795 states and 42623 transitions. Word has length 177 [2022-02-10 22:28:14,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:14,739 INFO L470 AbstractCegarLoop]: Abstraction has 14795 states and 42623 transitions. [2022-02-10 22:28:14,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:14,739 INFO L276 IsEmpty]: Start isEmpty. Operand 14795 states and 42623 transitions. [2022-02-10 22:28:14,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:14,761 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:14,761 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:14,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-02-10 22:28:14,761 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:14,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:14,762 INFO L85 PathProgramCache]: Analyzing trace with hash -188440526, now seen corresponding path program 9 times [2022-02-10 22:28:14,762 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:14,762 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159414673] [2022-02-10 22:28:14,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:14,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:15,091 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:15,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159414673] [2022-02-10 22:28:15,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159414673] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:28:15,091 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:28:15,091 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:28:15,091 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717348516] [2022-02-10 22:28:15,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:28:15,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:28:15,091 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:15,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:28:15,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:28:15,092 INFO L87 Difference]: Start difference. First operand 14795 states and 42623 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:15,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:15,735 INFO L93 Difference]: Finished difference Result 26799 states and 77153 transitions. [2022-02-10 22:28:15,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:28:15,736 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:15,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:15,798 INFO L225 Difference]: With dead ends: 26799 [2022-02-10 22:28:15,798 INFO L226 Difference]: Without dead ends: 26799 [2022-02-10 22:28:15,798 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=353, Invalid=1053, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:28:15,798 INFO L934 BasicCegarLoop]: 350 mSDtfsCounter, 1073 mSDsluCounter, 2829 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 3121 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:15,798 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1073 Valid, 3121 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:28:15,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26799 states. [2022-02-10 22:28:16,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26799 to 14771. [2022-02-10 22:28:16,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14771 states, 14770 states have (on average 2.87968855788761) internal successors, (42533), 14770 states have internal predecessors, (42533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:16,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14771 states to 14771 states and 42533 transitions. [2022-02-10 22:28:16,145 INFO L78 Accepts]: Start accepts. Automaton has 14771 states and 42533 transitions. Word has length 177 [2022-02-10 22:28:16,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:16,145 INFO L470 AbstractCegarLoop]: Abstraction has 14771 states and 42533 transitions. [2022-02-10 22:28:16,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:16,145 INFO L276 IsEmpty]: Start isEmpty. Operand 14771 states and 42533 transitions. [2022-02-10 22:28:16,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:16,168 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:16,168 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:16,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-02-10 22:28:16,168 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:16,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:16,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1002571828, now seen corresponding path program 11 times [2022-02-10 22:28:16,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:16,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501517556] [2022-02-10 22:28:16,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:16,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:16,564 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:16,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501517556] [2022-02-10 22:28:16,564 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501517556] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:28:16,564 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:28:16,564 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:28:16,564 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873387509] [2022-02-10 22:28:16,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:28:16,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:28:16,565 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:16,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:28:16,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:28:16,565 INFO L87 Difference]: Start difference. First operand 14771 states and 42533 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:17,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:17,307 INFO L93 Difference]: Finished difference Result 27183 states and 78183 transitions. [2022-02-10 22:28:17,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:28:17,307 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:17,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:17,369 INFO L225 Difference]: With dead ends: 27183 [2022-02-10 22:28:17,369 INFO L226 Difference]: Without dead ends: 27183 [2022-02-10 22:28:17,369 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:28:17,370 INFO L934 BasicCegarLoop]: 365 mSDtfsCounter, 962 mSDsluCounter, 3213 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 3497 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:17,370 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [962 Valid, 3497 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:28:17,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27183 states. [2022-02-10 22:28:17,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27183 to 14771. [2022-02-10 22:28:17,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14771 states, 14770 states have (on average 2.8791469194312795) internal successors, (42525), 14770 states have internal predecessors, (42525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:17,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14771 states to 14771 states and 42525 transitions. [2022-02-10 22:28:17,707 INFO L78 Accepts]: Start accepts. Automaton has 14771 states and 42525 transitions. Word has length 177 [2022-02-10 22:28:17,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:17,707 INFO L470 AbstractCegarLoop]: Abstraction has 14771 states and 42525 transitions. [2022-02-10 22:28:17,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:17,708 INFO L276 IsEmpty]: Start isEmpty. Operand 14771 states and 42525 transitions. [2022-02-10 22:28:17,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:17,732 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:17,732 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:17,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-02-10 22:28:17,732 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:17,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:17,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1765481906, now seen corresponding path program 12 times [2022-02-10 22:28:17,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:17,733 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712250076] [2022-02-10 22:28:17,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:17,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:18,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:18,044 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:18,044 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712250076] [2022-02-10 22:28:18,044 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712250076] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:28:18,044 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:28:18,044 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:28:18,044 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935701238] [2022-02-10 22:28:18,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:28:18,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:28:18,044 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:18,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:28:18,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:28:18,045 INFO L87 Difference]: Start difference. First operand 14771 states and 42525 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:18,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:18,687 INFO L93 Difference]: Finished difference Result 26439 states and 75837 transitions. [2022-02-10 22:28:18,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:28:18,687 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:18,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:18,745 INFO L225 Difference]: With dead ends: 26439 [2022-02-10 22:28:18,746 INFO L226 Difference]: Without dead ends: 26439 [2022-02-10 22:28:18,746 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:28:18,746 INFO L934 BasicCegarLoop]: 364 mSDtfsCounter, 921 mSDsluCounter, 3123 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 3408 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:18,746 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [921 Valid, 3408 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:28:18,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26439 states. [2022-02-10 22:28:19,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26439 to 14283. [2022-02-10 22:28:19,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14283 states, 14282 states have (on average 2.862974373337068) internal successors, (40889), 14282 states have internal predecessors, (40889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:19,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14283 states to 14283 states and 40889 transitions. [2022-02-10 22:28:19,096 INFO L78 Accepts]: Start accepts. Automaton has 14283 states and 40889 transitions. Word has length 177 [2022-02-10 22:28:19,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:19,097 INFO L470 AbstractCegarLoop]: Abstraction has 14283 states and 40889 transitions. [2022-02-10 22:28:19,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:19,097 INFO L276 IsEmpty]: Start isEmpty. Operand 14283 states and 40889 transitions. [2022-02-10 22:28:19,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:19,119 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:19,119 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:19,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-02-10 22:28:19,119 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:19,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:19,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1967030796, now seen corresponding path program 12 times [2022-02-10 22:28:19,120 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:19,120 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452412548] [2022-02-10 22:28:19,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:19,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:19,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:19,462 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:19,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452412548] [2022-02-10 22:28:19,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452412548] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:28:19,462 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:28:19,462 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:28:19,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165898566] [2022-02-10 22:28:19,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:28:19,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:28:19,463 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:19,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:28:19,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:28:19,463 INFO L87 Difference]: Start difference. First operand 14283 states and 40889 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:20,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:20,125 INFO L93 Difference]: Finished difference Result 26107 states and 74893 transitions. [2022-02-10 22:28:20,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:28:20,126 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:20,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:20,183 INFO L225 Difference]: With dead ends: 26107 [2022-02-10 22:28:20,183 INFO L226 Difference]: Without dead ends: 26107 [2022-02-10 22:28:20,184 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=359, Invalid=1123, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:28:20,184 INFO L934 BasicCegarLoop]: 351 mSDtfsCounter, 1220 mSDsluCounter, 2845 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:20,184 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1220 Valid, 3132 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:28:20,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26107 states. [2022-02-10 22:28:20,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26107 to 14283. [2022-02-10 22:28:20,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14283 states, 14282 states have (on average 2.862974373337068) internal successors, (40889), 14282 states have internal predecessors, (40889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:20,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14283 states to 14283 states and 40889 transitions. [2022-02-10 22:28:20,507 INFO L78 Accepts]: Start accepts. Automaton has 14283 states and 40889 transitions. Word has length 177 [2022-02-10 22:28:20,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:20,507 INFO L470 AbstractCegarLoop]: Abstraction has 14283 states and 40889 transitions. [2022-02-10 22:28:20,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:20,507 INFO L276 IsEmpty]: Start isEmpty. Operand 14283 states and 40889 transitions. [2022-02-10 22:28:20,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:20,529 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:20,529 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:20,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-02-10 22:28:20,530 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:20,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:20,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1864361758, now seen corresponding path program 10 times [2022-02-10 22:28:20,530 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:20,530 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222396972] [2022-02-10 22:28:20,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:20,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:20,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:20,856 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:20,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222396972] [2022-02-10 22:28:20,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222396972] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:28:20,856 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:28:20,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:28:20,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951485453] [2022-02-10 22:28:20,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:28:20,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:28:20,857 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:20,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:28:20,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:28:20,857 INFO L87 Difference]: Start difference. First operand 14283 states and 40889 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:21,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:21,550 INFO L93 Difference]: Finished difference Result 26227 states and 75239 transitions. [2022-02-10 22:28:21,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:28:21,551 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:21,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:21,611 INFO L225 Difference]: With dead ends: 26227 [2022-02-10 22:28:21,611 INFO L226 Difference]: Without dead ends: 26227 [2022-02-10 22:28:21,611 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:28:21,611 INFO L934 BasicCegarLoop]: 371 mSDtfsCounter, 979 mSDsluCounter, 3210 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 3512 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:21,611 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 3512 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:28:21,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26227 states. [2022-02-10 22:28:21,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26227 to 14275. [2022-02-10 22:28:21,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14275 states, 14274 states have (on average 2.8619167717528375) internal successors, (40851), 14274 states have internal predecessors, (40851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:21,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14275 states to 14275 states and 40851 transitions. [2022-02-10 22:28:21,951 INFO L78 Accepts]: Start accepts. Automaton has 14275 states and 40851 transitions. Word has length 177 [2022-02-10 22:28:21,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:21,951 INFO L470 AbstractCegarLoop]: Abstraction has 14275 states and 40851 transitions. [2022-02-10 22:28:21,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:21,952 INFO L276 IsEmpty]: Start isEmpty. Operand 14275 states and 40851 transitions. [2022-02-10 22:28:21,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:21,974 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:21,974 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:21,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-02-10 22:28:21,974 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:21,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:21,975 INFO L85 PathProgramCache]: Analyzing trace with hash 332351942, now seen corresponding path program 13 times [2022-02-10 22:28:21,975 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:21,975 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487232544] [2022-02-10 22:28:21,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:21,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:22,296 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:22,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487232544] [2022-02-10 22:28:22,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487232544] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:28:22,296 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:28:22,296 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:28:22,296 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960335695] [2022-02-10 22:28:22,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:28:22,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:28:22,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:22,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:28:22,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:28:22,297 INFO L87 Difference]: Start difference. First operand 14275 states and 40851 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:23,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:23,015 INFO L93 Difference]: Finished difference Result 25017 states and 71697 transitions. [2022-02-10 22:28:23,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:28:23,015 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:23,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:23,074 INFO L225 Difference]: With dead ends: 25017 [2022-02-10 22:28:23,074 INFO L226 Difference]: Without dead ends: 25017 [2022-02-10 22:28:23,074 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=403, Invalid=1237, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 22:28:23,074 INFO L934 BasicCegarLoop]: 364 mSDtfsCounter, 1361 mSDsluCounter, 3318 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 3620 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:23,075 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1361 Valid, 3620 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:28:23,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25017 states. [2022-02-10 22:28:23,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25017 to 13177. [2022-02-10 22:28:23,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13177 states, 13176 states have (on average 2.865437158469945) internal successors, (37755), 13176 states have internal predecessors, (37755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:23,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13177 states to 13177 states and 37755 transitions. [2022-02-10 22:28:23,382 INFO L78 Accepts]: Start accepts. Automaton has 13177 states and 37755 transitions. Word has length 177 [2022-02-10 22:28:23,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:23,382 INFO L470 AbstractCegarLoop]: Abstraction has 13177 states and 37755 transitions. [2022-02-10 22:28:23,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:23,383 INFO L276 IsEmpty]: Start isEmpty. Operand 13177 states and 37755 transitions. [2022-02-10 22:28:23,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:23,402 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:23,402 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:23,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-02-10 22:28:23,402 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:23,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:23,403 INFO L85 PathProgramCache]: Analyzing trace with hash 627234334, now seen corresponding path program 11 times [2022-02-10 22:28:23,403 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:23,403 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381339600] [2022-02-10 22:28:23,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:23,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:23,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:23,737 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:23,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381339600] [2022-02-10 22:28:23,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381339600] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:28:23,737 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:28:23,737 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:28:23,738 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247706488] [2022-02-10 22:28:23,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:28:23,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:28:23,738 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:23,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:28:23,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:28:23,738 INFO L87 Difference]: Start difference. First operand 13177 states and 37755 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:24,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:24,410 INFO L93 Difference]: Finished difference Result 24737 states and 70895 transitions. [2022-02-10 22:28:24,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:28:24,411 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:24,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:24,465 INFO L225 Difference]: With dead ends: 24737 [2022-02-10 22:28:24,465 INFO L226 Difference]: Without dead ends: 24737 [2022-02-10 22:28:24,465 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=395, Invalid=1165, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 22:28:24,465 INFO L934 BasicCegarLoop]: 351 mSDtfsCounter, 896 mSDsluCounter, 2841 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:24,465 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 3138 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:28:24,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24737 states. [2022-02-10 22:28:24,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24737 to 13193. [2022-02-10 22:28:24,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13193 states, 13192 states have (on average 2.86529714978775) internal successors, (37799), 13192 states have internal predecessors, (37799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:24,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13193 states to 13193 states and 37799 transitions. [2022-02-10 22:28:24,769 INFO L78 Accepts]: Start accepts. Automaton has 13193 states and 37799 transitions. Word has length 177 [2022-02-10 22:28:24,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:24,769 INFO L470 AbstractCegarLoop]: Abstraction has 13193 states and 37799 transitions. [2022-02-10 22:28:24,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:24,769 INFO L276 IsEmpty]: Start isEmpty. Operand 13193 states and 37799 transitions. [2022-02-10 22:28:24,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:24,789 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:24,789 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:24,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-02-10 22:28:24,790 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:24,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:24,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1467129088, now seen corresponding path program 12 times [2022-02-10 22:28:24,790 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:24,790 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097010249] [2022-02-10 22:28:24,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:24,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:25,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:25,101 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:25,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097010249] [2022-02-10 22:28:25,102 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097010249] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:28:25,102 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:28:25,102 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:28:25,102 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9330790] [2022-02-10 22:28:25,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:28:25,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:28:25,102 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:25,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:28:25,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:28:25,102 INFO L87 Difference]: Start difference. First operand 13193 states and 37799 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:25,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:25,851 INFO L93 Difference]: Finished difference Result 25601 states and 73367 transitions. [2022-02-10 22:28:25,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 22:28:25,852 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:25,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:25,910 INFO L225 Difference]: With dead ends: 25601 [2022-02-10 22:28:25,910 INFO L226 Difference]: Without dead ends: 25601 [2022-02-10 22:28:25,910 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=427, Invalid=1295, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 22:28:25,911 INFO L934 BasicCegarLoop]: 387 mSDtfsCounter, 1269 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 3348 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:25,911 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1269 Valid, 3348 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:28:25,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25601 states. [2022-02-10 22:28:26,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25601 to 13145. [2022-02-10 22:28:26,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13145 states, 13144 states have (on average 2.8651095556908093) internal successors, (37659), 13144 states have internal predecessors, (37659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:26,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13145 states to 13145 states and 37659 transitions. [2022-02-10 22:28:26,217 INFO L78 Accepts]: Start accepts. Automaton has 13145 states and 37659 transitions. Word has length 177 [2022-02-10 22:28:26,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:26,217 INFO L470 AbstractCegarLoop]: Abstraction has 13145 states and 37659 transitions. [2022-02-10 22:28:26,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:26,217 INFO L276 IsEmpty]: Start isEmpty. Operand 13145 states and 37659 transitions. [2022-02-10 22:28:26,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:26,237 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:26,237 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:26,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-02-10 22:28:26,237 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:26,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:26,237 INFO L85 PathProgramCache]: Analyzing trace with hash -190982338, now seen corresponding path program 12 times [2022-02-10 22:28:26,237 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:26,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222415307] [2022-02-10 22:28:26,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:26,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:26,506 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:26,506 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222415307] [2022-02-10 22:28:26,506 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222415307] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:28:26,506 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:28:26,506 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:28:26,506 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284184110] [2022-02-10 22:28:26,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:28:26,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:28:26,506 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:26,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:28:26,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:28:26,507 INFO L87 Difference]: Start difference. First operand 13145 states and 37659 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:27,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:27,204 INFO L93 Difference]: Finished difference Result 28662 states and 82319 transitions. [2022-02-10 22:28:27,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:28:27,205 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:27,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:27,266 INFO L225 Difference]: With dead ends: 28662 [2022-02-10 22:28:27,266 INFO L226 Difference]: Without dead ends: 28662 [2022-02-10 22:28:27,266 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=313, Invalid=1019, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:28:27,267 INFO L934 BasicCegarLoop]: 433 mSDtfsCounter, 1140 mSDsluCounter, 3997 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 4328 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:27,267 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1140 Valid, 4328 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:28:27,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28662 states. [2022-02-10 22:28:27,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28662 to 13657. [2022-02-10 22:28:27,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13657 states, 13656 states have (on average 2.8615260691271236) internal successors, (39077), 13656 states have internal predecessors, (39077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:27,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13657 states to 13657 states and 39077 transitions. [2022-02-10 22:28:27,607 INFO L78 Accepts]: Start accepts. Automaton has 13657 states and 39077 transitions. Word has length 177 [2022-02-10 22:28:27,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:27,607 INFO L470 AbstractCegarLoop]: Abstraction has 13657 states and 39077 transitions. [2022-02-10 22:28:27,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:27,607 INFO L276 IsEmpty]: Start isEmpty. Operand 13657 states and 39077 transitions. [2022-02-10 22:28:27,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:27,628 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:27,628 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:27,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-02-10 22:28:27,629 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:27,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:27,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1068165586, now seen corresponding path program 14 times [2022-02-10 22:28:27,629 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:27,629 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444599657] [2022-02-10 22:28:27,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:27,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:27,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:27,937 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:27,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444599657] [2022-02-10 22:28:27,938 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444599657] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:28:27,938 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:28:27,938 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:28:27,938 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161060462] [2022-02-10 22:28:27,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:28:27,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:28:27,938 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:27,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:28:27,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:28:27,938 INFO L87 Difference]: Start difference. First operand 13657 states and 39077 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:28,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:28,594 INFO L93 Difference]: Finished difference Result 22774 states and 65512 transitions. [2022-02-10 22:28:28,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:28:28,595 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:28,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:28,640 INFO L225 Difference]: With dead ends: 22774 [2022-02-10 22:28:28,641 INFO L226 Difference]: Without dead ends: 22774 [2022-02-10 22:28:28,641 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:28:28,641 INFO L934 BasicCegarLoop]: 382 mSDtfsCounter, 1165 mSDsluCounter, 3036 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 3347 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:28,641 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1165 Valid, 3347 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:28:28,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22774 states. [2022-02-10 22:28:28,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22774 to 13857. [2022-02-10 22:28:28,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13857 states, 13856 states have (on average 2.859483256351039) internal successors, (39621), 13856 states have internal predecessors, (39621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:28,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13857 states to 13857 states and 39621 transitions. [2022-02-10 22:28:28,936 INFO L78 Accepts]: Start accepts. Automaton has 13857 states and 39621 transitions. Word has length 177 [2022-02-10 22:28:28,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:28,936 INFO L470 AbstractCegarLoop]: Abstraction has 13857 states and 39621 transitions. [2022-02-10 22:28:28,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:28,936 INFO L276 IsEmpty]: Start isEmpty. Operand 13857 states and 39621 transitions. [2022-02-10 22:28:28,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:28,957 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:28,957 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:28,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-02-10 22:28:28,958 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:28,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:28,958 INFO L85 PathProgramCache]: Analyzing trace with hash 264718334, now seen corresponding path program 15 times [2022-02-10 22:28:28,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:28,958 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169745557] [2022-02-10 22:28:28,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:28,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:29,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:29,247 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:29,247 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169745557] [2022-02-10 22:28:29,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169745557] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:28:29,247 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617617881] [2022-02-10 22:28:29,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:28:29,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:28:29,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:28:29,248 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:28:29,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-10 22:28:29,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 22:28:29,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:28:29,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 22:28:29,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:28:29,400 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:28:29,417 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-02-10 22:28:29,417 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-02-10 22:28:29,553 INFO L353 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-02-10 22:28:29,553 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-02-10 22:28:29,663 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:28:29,952 INFO L353 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-02-10 22:28:29,953 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 25 [2022-02-10 22:28:30,064 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:28:30,241 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:28:30,311 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:28:30,715 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-02-10 22:28:30,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-02-10 22:28:30,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:28:30,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:28:31,172 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_1463 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1463))) (let ((.cse2 (select .cse3 c_~get1~0.base)) (.cse0 (select .cse3 ~get2~0.base))) (or (let ((.cse1 (* c_thread1Thread1of1ForFork0_~i~0 4))) (< (select .cse0 (+ c_~get2~0.offset .cse1)) (select .cse2 (+ c_~get1~0.offset .cse1)))) (<= (select .cse2 c_~get1~0.offset) (select .cse0 c_~get2~0.offset)))))) is different from false [2022-02-10 22:28:31,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-02-10 22:28:31,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617617881] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:28:31,279 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:28:31,279 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 28, 12] total 56 [2022-02-10 22:28:31,279 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307028421] [2022-02-10 22:28:31,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:28:31,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-10 22:28:31,280 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:31,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-10 22:28:31,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=2738, Unknown=1, NotChecked=106, Total=3080 [2022-02-10 22:28:31,281 INFO L87 Difference]: Start difference. First operand 13857 states and 39621 transitions. Second operand has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:35,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:35,788 INFO L93 Difference]: Finished difference Result 41950 states and 120825 transitions. [2022-02-10 22:28:35,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-10 22:28:35,789 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:35,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:35,884 INFO L225 Difference]: With dead ends: 41950 [2022-02-10 22:28:35,884 INFO L226 Difference]: Without dead ends: 41950 [2022-02-10 22:28:35,886 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 335 SyntacticMatches, 4 SemanticMatches, 110 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2842 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2182, Invalid=10031, Unknown=1, NotChecked=218, Total=12432 [2022-02-10 22:28:35,886 INFO L934 BasicCegarLoop]: 700 mSDtfsCounter, 4683 mSDsluCounter, 13456 mSDsCounter, 0 mSdLazyCounter, 3960 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 13756 SdHoareTripleChecker+Invalid, 5789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1767 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:35,886 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [4683 Valid, 13756 Invalid, 5789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 3960 Invalid, 0 Unknown, 1767 Unchecked, 1.5s Time] [2022-02-10 22:28:35,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41950 states. [2022-02-10 22:28:36,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41950 to 16569. [2022-02-10 22:28:36,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16569 states, 16568 states have (on average 2.8684814099468854) internal successors, (47525), 16568 states have internal predecessors, (47525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:36,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16569 states to 16569 states and 47525 transitions. [2022-02-10 22:28:36,390 INFO L78 Accepts]: Start accepts. Automaton has 16569 states and 47525 transitions. Word has length 177 [2022-02-10 22:28:36,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:36,391 INFO L470 AbstractCegarLoop]: Abstraction has 16569 states and 47525 transitions. [2022-02-10 22:28:36,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:36,391 INFO L276 IsEmpty]: Start isEmpty. Operand 16569 states and 47525 transitions. [2022-02-10 22:28:36,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:36,416 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:36,416 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:36,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-10 22:28:36,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:28:36,617 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:36,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:36,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1010134096, now seen corresponding path program 13 times [2022-02-10 22:28:36,617 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:36,618 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742578927] [2022-02-10 22:28:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:36,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:36,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:36,897 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:36,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742578927] [2022-02-10 22:28:36,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742578927] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:28:36,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680287010] [2022-02-10 22:28:36,897 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:28:36,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:28:36,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:28:36,898 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:28:36,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-10 22:28:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:37,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 22:28:37,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:28:37,057 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:28:37,234 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-02-10 22:28:37,235 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-02-10 22:28:37,505 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 22:28:37,505 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 22:28:37,595 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:28:37,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:28:37,792 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:28:37,997 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-02-10 22:28:37,997 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:28:38,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:28:38,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:28:38,313 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_1501 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1501))) (let ((.cse0 (select .cse3 ~get1~0.base)) (.cse1 (select .cse3 c_~get2~0.base))) (or (= (select .cse0 c_~get1~0.offset) (select .cse1 c_~get2~0.offset)) (not (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get1~0.offset .cse2)) (select .cse1 (+ c_~get2~0.offset .cse2))))))))) is different from false [2022-02-10 22:28:38,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-02-10 22:28:38,445 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680287010] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:28:38,445 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:28:38,445 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 10] total 50 [2022-02-10 22:28:38,445 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507795079] [2022-02-10 22:28:38,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:28:38,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-10 22:28:38,446 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:38,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-10 22:28:38,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2137, Unknown=1, NotChecked=94, Total=2450 [2022-02-10 22:28:38,447 INFO L87 Difference]: Start difference. First operand 16569 states and 47525 transitions. Second operand has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:40,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:40,948 INFO L93 Difference]: Finished difference Result 35454 states and 102235 transitions. [2022-02-10 22:28:40,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-10 22:28:40,949 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:40,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:41,026 INFO L225 Difference]: With dead ends: 35454 [2022-02-10 22:28:41,026 INFO L226 Difference]: Without dead ends: 35454 [2022-02-10 22:28:41,027 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 335 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1532 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1383, Invalid=5930, Unknown=1, NotChecked=168, Total=7482 [2022-02-10 22:28:41,028 INFO L934 BasicCegarLoop]: 454 mSDtfsCounter, 3755 mSDsluCounter, 10294 mSDsCounter, 0 mSdLazyCounter, 2858 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 10489 SdHoareTripleChecker+Invalid, 3369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 459 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:41,028 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3755 Valid, 10489 Invalid, 3369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2858 Invalid, 0 Unknown, 459 Unchecked, 1.0s Time] [2022-02-10 22:28:41,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35454 states. [2022-02-10 22:28:41,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35454 to 17289. [2022-02-10 22:28:41,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17289 states, 17288 states have (on average 2.8649352151781584) internal successors, (49529), 17288 states have internal predecessors, (49529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:41,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17289 states to 17289 states and 49529 transitions. [2022-02-10 22:28:41,449 INFO L78 Accepts]: Start accepts. Automaton has 17289 states and 49529 transitions. Word has length 177 [2022-02-10 22:28:41,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:41,449 INFO L470 AbstractCegarLoop]: Abstraction has 17289 states and 49529 transitions. [2022-02-10 22:28:41,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:41,449 INFO L276 IsEmpty]: Start isEmpty. Operand 17289 states and 49529 transitions. [2022-02-10 22:28:41,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:41,475 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:41,475 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:41,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-10 22:28:41,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:28:41,676 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:41,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:41,676 INFO L85 PathProgramCache]: Analyzing trace with hash -219886214, now seen corresponding path program 13 times [2022-02-10 22:28:41,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:41,676 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969865716] [2022-02-10 22:28:41,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:41,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:42,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:42,036 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:42,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969865716] [2022-02-10 22:28:42,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969865716] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:28:42,036 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:28:42,036 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:28:42,036 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639768349] [2022-02-10 22:28:42,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:28:42,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:28:42,037 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:42,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:28:42,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:28:42,037 INFO L87 Difference]: Start difference. First operand 17289 states and 49529 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:42,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:42,846 INFO L93 Difference]: Finished difference Result 30015 states and 86391 transitions. [2022-02-10 22:28:42,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 22:28:42,846 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:42,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:42,912 INFO L225 Difference]: With dead ends: 30015 [2022-02-10 22:28:42,912 INFO L226 Difference]: Without dead ends: 30015 [2022-02-10 22:28:42,912 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=405, Invalid=1317, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 22:28:42,913 INFO L934 BasicCegarLoop]: 421 mSDtfsCounter, 1390 mSDsluCounter, 3529 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 3862 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:42,913 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1390 Valid, 3862 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:28:42,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30015 states. [2022-02-10 22:28:43,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30015 to 17305. [2022-02-10 22:28:43,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17305 states, 17304 states have (on average 2.8657535829865926) internal successors, (49589), 17304 states have internal predecessors, (49589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:43,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17305 states to 17305 states and 49589 transitions. [2022-02-10 22:28:43,414 INFO L78 Accepts]: Start accepts. Automaton has 17305 states and 49589 transitions. Word has length 177 [2022-02-10 22:28:43,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:43,414 INFO L470 AbstractCegarLoop]: Abstraction has 17305 states and 49589 transitions. [2022-02-10 22:28:43,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:43,414 INFO L276 IsEmpty]: Start isEmpty. Operand 17305 states and 49589 transitions. [2022-02-10 22:28:43,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:43,441 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:43,441 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:43,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-02-10 22:28:43,441 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:43,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:43,442 INFO L85 PathProgramCache]: Analyzing trace with hash 652336600, now seen corresponding path program 14 times [2022-02-10 22:28:43,442 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:43,442 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091393438] [2022-02-10 22:28:43,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:43,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:43,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:43,787 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:43,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091393438] [2022-02-10 22:28:43,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091393438] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:28:43,787 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:28:43,787 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:28:43,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998978956] [2022-02-10 22:28:43,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:28:43,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:28:43,788 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:43,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:28:43,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:28:43,788 INFO L87 Difference]: Start difference. First operand 17305 states and 49589 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:44,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:44,541 INFO L93 Difference]: Finished difference Result 26780 states and 77304 transitions. [2022-02-10 22:28:44,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:28:44,541 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:44,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:44,599 INFO L225 Difference]: With dead ends: 26780 [2022-02-10 22:28:44,599 INFO L226 Difference]: Without dead ends: 26780 [2022-02-10 22:28:44,600 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=338, Invalid=1144, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:28:44,600 INFO L934 BasicCegarLoop]: 386 mSDtfsCounter, 973 mSDsluCounter, 3527 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 3830 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:44,600 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [973 Valid, 3830 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:28:44,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26780 states. [2022-02-10 22:28:44,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26780 to 17313. [2022-02-10 22:28:44,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17313 states, 17312 states have (on average 2.866162199630314) internal successors, (49619), 17312 states have internal predecessors, (49619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:44,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17313 states to 17313 states and 49619 transitions. [2022-02-10 22:28:44,954 INFO L78 Accepts]: Start accepts. Automaton has 17313 states and 49619 transitions. Word has length 177 [2022-02-10 22:28:44,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:44,954 INFO L470 AbstractCegarLoop]: Abstraction has 17313 states and 49619 transitions. [2022-02-10 22:28:44,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:44,955 INFO L276 IsEmpty]: Start isEmpty. Operand 17313 states and 49619 transitions. [2022-02-10 22:28:44,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:44,980 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:44,980 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:44,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-02-10 22:28:44,980 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:44,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:44,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1447008256, now seen corresponding path program 16 times [2022-02-10 22:28:44,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:44,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379855190] [2022-02-10 22:28:44,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:44,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:45,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:45,298 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:45,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379855190] [2022-02-10 22:28:45,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379855190] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:28:45,298 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:28:45,298 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:28:45,298 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819468153] [2022-02-10 22:28:45,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:28:45,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:28:45,299 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:45,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:28:45,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:28:45,299 INFO L87 Difference]: Start difference. First operand 17313 states and 49619 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:45,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:45,955 INFO L93 Difference]: Finished difference Result 26444 states and 76272 transitions. [2022-02-10 22:28:45,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:28:45,955 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:45,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:46,015 INFO L225 Difference]: With dead ends: 26444 [2022-02-10 22:28:46,015 INFO L226 Difference]: Without dead ends: 26444 [2022-02-10 22:28:46,015 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:28:46,016 INFO L934 BasicCegarLoop]: 373 mSDtfsCounter, 1098 mSDsluCounter, 2889 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:46,016 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1098 Valid, 3191 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:28:46,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26444 states. [2022-02-10 22:28:46,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26444 to 17345. [2022-02-10 22:28:46,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17345 states, 17344 states have (on average 2.8659478782287824) internal successors, (49707), 17344 states have internal predecessors, (49707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:46,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17345 states to 17345 states and 49707 transitions. [2022-02-10 22:28:46,375 INFO L78 Accepts]: Start accepts. Automaton has 17345 states and 49707 transitions. Word has length 177 [2022-02-10 22:28:46,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:46,375 INFO L470 AbstractCegarLoop]: Abstraction has 17345 states and 49707 transitions. [2022-02-10 22:28:46,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:46,375 INFO L276 IsEmpty]: Start isEmpty. Operand 17345 states and 49707 transitions. [2022-02-10 22:28:46,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:46,401 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:46,401 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:46,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-02-10 22:28:46,401 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:46,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:46,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1040334356, now seen corresponding path program 17 times [2022-02-10 22:28:46,401 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:46,401 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007545602] [2022-02-10 22:28:46,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:46,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:46,708 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:46,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007545602] [2022-02-10 22:28:46,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007545602] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:28:46,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482624276] [2022-02-10 22:28:46,709 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:28:46,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:28:46,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:28:46,710 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:28:46,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-10 22:28:46,829 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:28:46,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:28:46,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 54 conjunts are in the unsatisfiable core [2022-02-10 22:28:46,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:28:47,295 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:28:47,441 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:28:47,538 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:28:47,761 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-02-10 22:28:47,761 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:28:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:28:47,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:28:48,111 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_1585 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1585))) (let ((.cse1 (select .cse3 ~get1~0.base)) (.cse0 (select .cse3 c_~get2~0.base))) (or (= (select .cse0 c_~get2~0.offset) (select .cse1 c_~get1~0.offset)) (not (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse1 (+ c_~get1~0.offset .cse2)) (select .cse0 (+ c_~get2~0.offset .cse2))))))))) is different from false [2022-02-10 22:28:48,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-02-10 22:28:48,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482624276] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:28:48,210 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:28:48,210 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 47 [2022-02-10 22:28:48,211 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551762797] [2022-02-10 22:28:48,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:28:48,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-10 22:28:48,211 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:48,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-10 22:28:48,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1869, Unknown=1, NotChecked=88, Total=2162 [2022-02-10 22:28:48,211 INFO L87 Difference]: Start difference. First operand 17345 states and 49707 transitions. Second operand has 47 states, 47 states have (on average 7.9787234042553195) internal successors, (375), 47 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:51,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:51,387 INFO L93 Difference]: Finished difference Result 30121 states and 86957 transitions. [2022-02-10 22:28:51,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-10 22:28:51,387 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 7.9787234042553195) internal successors, (375), 47 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:51,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:51,454 INFO L225 Difference]: With dead ends: 30121 [2022-02-10 22:28:51,454 INFO L226 Difference]: Without dead ends: 30121 [2022-02-10 22:28:51,455 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 339 SyntacticMatches, 5 SemanticMatches, 98 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 2394 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1963, Invalid=7742, Unknown=1, NotChecked=194, Total=9900 [2022-02-10 22:28:51,455 INFO L934 BasicCegarLoop]: 413 mSDtfsCounter, 2191 mSDsluCounter, 7419 mSDsCounter, 0 mSdLazyCounter, 2321 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2191 SdHoareTripleChecker+Valid, 7672 SdHoareTripleChecker+Invalid, 2965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 603 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:51,455 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2191 Valid, 7672 Invalid, 2965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2321 Invalid, 0 Unknown, 603 Unchecked, 0.9s Time] [2022-02-10 22:28:51,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30121 states. [2022-02-10 22:28:51,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30121 to 17313. [2022-02-10 22:28:51,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17313 states, 17312 states have (on average 2.866162199630314) internal successors, (49619), 17312 states have internal predecessors, (49619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17313 states to 17313 states and 49619 transitions. [2022-02-10 22:28:51,847 INFO L78 Accepts]: Start accepts. Automaton has 17313 states and 49619 transitions. Word has length 177 [2022-02-10 22:28:51,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:51,847 INFO L470 AbstractCegarLoop]: Abstraction has 17313 states and 49619 transitions. [2022-02-10 22:28:51,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 7.9787234042553195) internal successors, (375), 47 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:51,848 INFO L276 IsEmpty]: Start isEmpty. Operand 17313 states and 49619 transitions. [2022-02-10 22:28:51,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:51,873 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:51,873 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:51,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-10 22:28:52,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2022-02-10 22:28:52,074 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:52,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:52,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1804088130, now seen corresponding path program 15 times [2022-02-10 22:28:52,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:52,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987936226] [2022-02-10 22:28:52,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:52,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:52,415 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:52,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987936226] [2022-02-10 22:28:52,415 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987936226] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:28:52,415 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:28:52,415 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:28:52,416 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724334922] [2022-02-10 22:28:52,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:28:52,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:28:52,416 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:52,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:28:52,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:28:52,416 INFO L87 Difference]: Start difference. First operand 17313 states and 49619 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:53,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:53,056 INFO L93 Difference]: Finished difference Result 26330 states and 75898 transitions. [2022-02-10 22:28:53,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 22:28:53,056 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:53,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:53,113 INFO L225 Difference]: With dead ends: 26330 [2022-02-10 22:28:53,113 INFO L226 Difference]: Without dead ends: 26330 [2022-02-10 22:28:53,113 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=277, Invalid=983, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 22:28:53,118 INFO L934 BasicCegarLoop]: 372 mSDtfsCounter, 921 mSDsluCounter, 3127 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 3433 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:53,118 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [921 Valid, 3433 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:28:53,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26330 states. [2022-02-10 22:28:53,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26330 to 17329. [2022-02-10 22:28:53,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17329 states, 17328 states have (on average 2.8669783010156973) internal successors, (49679), 17328 states have internal predecessors, (49679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:53,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17329 states to 17329 states and 49679 transitions. [2022-02-10 22:28:53,465 INFO L78 Accepts]: Start accepts. Automaton has 17329 states and 49679 transitions. Word has length 177 [2022-02-10 22:28:53,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:53,466 INFO L470 AbstractCegarLoop]: Abstraction has 17329 states and 49679 transitions. [2022-02-10 22:28:53,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:53,466 INFO L276 IsEmpty]: Start isEmpty. Operand 17329 states and 49679 transitions. [2022-02-10 22:28:53,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:53,492 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:53,492 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:53,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-02-10 22:28:53,492 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:53,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:53,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1438045892, now seen corresponding path program 18 times [2022-02-10 22:28:53,492 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:53,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637181766] [2022-02-10 22:28:53,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:53,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:53,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:53,841 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:53,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637181766] [2022-02-10 22:28:53,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637181766] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:28:53,841 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:28:53,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:28:53,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882086144] [2022-02-10 22:28:53,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:28:53,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:28:53,841 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:53,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:28:53,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:28:53,841 INFO L87 Difference]: Start difference. First operand 17329 states and 49679 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:54,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:54,438 INFO L93 Difference]: Finished difference Result 26174 states and 75478 transitions. [2022-02-10 22:28:54,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 22:28:54,439 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:54,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:54,486 INFO L225 Difference]: With dead ends: 26174 [2022-02-10 22:28:54,487 INFO L226 Difference]: Without dead ends: 26174 [2022-02-10 22:28:54,487 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=917, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 22:28:54,487 INFO L934 BasicCegarLoop]: 365 mSDtfsCounter, 768 mSDsluCounter, 3213 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 3509 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:54,487 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 3509 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:28:54,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26174 states. [2022-02-10 22:28:54,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26174 to 17337. [2022-02-10 22:28:54,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17337 states, 17336 states have (on average 2.866924319335487) internal successors, (49701), 17336 states have internal predecessors, (49701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:54,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17337 states to 17337 states and 49701 transitions. [2022-02-10 22:28:54,823 INFO L78 Accepts]: Start accepts. Automaton has 17337 states and 49701 transitions. Word has length 177 [2022-02-10 22:28:54,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:54,824 INFO L470 AbstractCegarLoop]: Abstraction has 17337 states and 49701 transitions. [2022-02-10 22:28:54,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:54,824 INFO L276 IsEmpty]: Start isEmpty. Operand 17337 states and 49701 transitions. [2022-02-10 22:28:54,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:54,849 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:54,849 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:54,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-02-10 22:28:54,850 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:54,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:54,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1165514494, now seen corresponding path program 19 times [2022-02-10 22:28:54,850 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:54,850 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073998895] [2022-02-10 22:28:54,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:54,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:55,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:55,181 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:55,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073998895] [2022-02-10 22:28:55,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073998895] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:28:55,181 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:28:55,181 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:28:55,181 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569860363] [2022-02-10 22:28:55,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:28:55,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:28:55,181 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:55,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:28:55,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:28:55,182 INFO L87 Difference]: Start difference. First operand 17337 states and 49701 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:55,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:55,877 INFO L93 Difference]: Finished difference Result 25874 states and 74502 transitions. [2022-02-10 22:28:55,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:28:55,877 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:55,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:55,926 INFO L225 Difference]: With dead ends: 25874 [2022-02-10 22:28:55,926 INFO L226 Difference]: Without dead ends: 25874 [2022-02-10 22:28:55,926 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=352, Invalid=1130, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:28:55,926 INFO L934 BasicCegarLoop]: 348 mSDtfsCounter, 934 mSDsluCounter, 3541 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 3822 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:55,927 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [934 Valid, 3822 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:28:55,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25874 states. [2022-02-10 22:28:56,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25874 to 17329. [2022-02-10 22:28:56,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17329 states, 17328 states have (on average 2.8669783010156973) internal successors, (49679), 17328 states have internal predecessors, (49679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:56,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17329 states to 17329 states and 49679 transitions. [2022-02-10 22:28:56,233 INFO L78 Accepts]: Start accepts. Automaton has 17329 states and 49679 transitions. Word has length 177 [2022-02-10 22:28:56,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:56,234 INFO L470 AbstractCegarLoop]: Abstraction has 17329 states and 49679 transitions. [2022-02-10 22:28:56,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:56,234 INFO L276 IsEmpty]: Start isEmpty. Operand 17329 states and 49679 transitions. [2022-02-10 22:28:56,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:56,260 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:56,260 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:56,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-02-10 22:28:56,260 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:56,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:56,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1629089236, now seen corresponding path program 13 times [2022-02-10 22:28:56,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:56,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910850435] [2022-02-10 22:28:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:56,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:56,571 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:56,571 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910850435] [2022-02-10 22:28:56,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910850435] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:28:56,571 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:28:56,572 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:28:56,572 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547288163] [2022-02-10 22:28:56,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:28:56,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:28:56,572 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:56,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:28:56,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:28:56,572 INFO L87 Difference]: Start difference. First operand 17329 states and 49679 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:57,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:57,182 INFO L93 Difference]: Finished difference Result 25930 states and 74640 transitions. [2022-02-10 22:28:57,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:28:57,182 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:57,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:57,235 INFO L225 Difference]: With dead ends: 25930 [2022-02-10 22:28:57,235 INFO L226 Difference]: Without dead ends: 25930 [2022-02-10 22:28:57,235 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:28:57,236 INFO L934 BasicCegarLoop]: 391 mSDtfsCounter, 819 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:57,236 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [819 Valid, 3004 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:28:57,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25930 states. [2022-02-10 22:28:57,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25930 to 17337. [2022-02-10 22:28:57,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17337 states, 17336 states have (on average 2.865539916935856) internal successors, (49677), 17336 states have internal predecessors, (49677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:57,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17337 states to 17337 states and 49677 transitions. [2022-02-10 22:28:57,630 INFO L78 Accepts]: Start accepts. Automaton has 17337 states and 49677 transitions. Word has length 177 [2022-02-10 22:28:57,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:57,630 INFO L470 AbstractCegarLoop]: Abstraction has 17337 states and 49677 transitions. [2022-02-10 22:28:57,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:57,630 INFO L276 IsEmpty]: Start isEmpty. Operand 17337 states and 49677 transitions. [2022-02-10 22:28:57,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:57,655 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:57,655 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:57,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-02-10 22:28:57,655 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:57,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:57,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1611715648, now seen corresponding path program 20 times [2022-02-10 22:28:57,656 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:57,656 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769002015] [2022-02-10 22:28:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:57,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:57,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:57,948 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:57,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769002015] [2022-02-10 22:28:57,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769002015] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:28:57,948 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:28:57,948 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:28:57,948 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366007642] [2022-02-10 22:28:57,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:28:57,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:28:57,948 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:28:57,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:28:57,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:28:57,949 INFO L87 Difference]: Start difference. First operand 17337 states and 49677 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:58,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:28:58,681 INFO L93 Difference]: Finished difference Result 26302 states and 75662 transitions. [2022-02-10 22:28:58,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 22:28:58,682 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:28:58,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:28:58,728 INFO L225 Difference]: With dead ends: 26302 [2022-02-10 22:28:58,728 INFO L226 Difference]: Without dead ends: 26302 [2022-02-10 22:28:58,729 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1243, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 22:28:58,729 INFO L934 BasicCegarLoop]: 376 mSDtfsCounter, 1002 mSDsluCounter, 3240 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 3551 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:28:58,729 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1002 Valid, 3551 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:28:58,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26302 states. [2022-02-10 22:28:58,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26302 to 17401. [2022-02-10 22:28:59,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17401 states, 17400 states have (on average 2.8651149425287357) internal successors, (49853), 17400 states have internal predecessors, (49853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:59,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17401 states to 17401 states and 49853 transitions. [2022-02-10 22:28:59,043 INFO L78 Accepts]: Start accepts. Automaton has 17401 states and 49853 transitions. Word has length 177 [2022-02-10 22:28:59,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:28:59,044 INFO L470 AbstractCegarLoop]: Abstraction has 17401 states and 49853 transitions. [2022-02-10 22:28:59,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:28:59,044 INFO L276 IsEmpty]: Start isEmpty. Operand 17401 states and 49853 transitions. [2022-02-10 22:28:59,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:28:59,071 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:28:59,071 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:28:59,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-02-10 22:28:59,071 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:28:59,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:28:59,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2018389548, now seen corresponding path program 21 times [2022-02-10 22:28:59,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:28:59,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415607460] [2022-02-10 22:28:59,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:28:59,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:28:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:28:59,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:28:59,369 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:28:59,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415607460] [2022-02-10 22:28:59,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415607460] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:28:59,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315012850] [2022-02-10 22:28:59,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:28:59,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:28:59,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:28:59,370 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:28:59,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-10 22:28:59,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 22:28:59,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:28:59,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 60 conjunts are in the unsatisfiable core [2022-02-10 22:28:59,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:28:59,533 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:28:59,648 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-02-10 22:28:59,648 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-02-10 22:28:59,740 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:28:59,980 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-02-10 22:28:59,980 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-02-10 22:29:00,071 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:29:00,203 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:29:00,279 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:29:00,709 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-02-10 22:29:00,710 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-02-10 22:29:00,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:29:00,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:29:01,185 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_1704 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1704))) (let ((.cse2 (select .cse3 c_~get1~0.base)) (.cse0 (select .cse3 ~get2~0.base))) (or (let ((.cse1 (* c_thread1Thread1of1ForFork0_~i~0 4))) (< (select .cse0 (+ c_~get2~0.offset .cse1)) (select .cse2 (+ c_~get1~0.offset .cse1)))) (<= (select .cse2 c_~get1~0.offset) (select .cse0 c_~get2~0.offset)))))) is different from false [2022-02-10 22:29:01,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-02-10 22:29:01,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315012850] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:29:01,301 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:29:01,301 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 28, 12] total 56 [2022-02-10 22:29:01,301 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489025176] [2022-02-10 22:29:01,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:29:01,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-10 22:29:01,301 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:29:01,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-10 22:29:01,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=2750, Unknown=1, NotChecked=106, Total=3080 [2022-02-10 22:29:01,302 INFO L87 Difference]: Start difference. First operand 17401 states and 49853 transitions. Second operand has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:06,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:29:06,607 INFO L93 Difference]: Finished difference Result 45958 states and 132833 transitions. [2022-02-10 22:29:06,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-10 22:29:06,607 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:29:06,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:29:06,698 INFO L225 Difference]: With dead ends: 45958 [2022-02-10 22:29:06,698 INFO L226 Difference]: Without dead ends: 45958 [2022-02-10 22:29:06,699 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 327 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3357 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2727, Invalid=12038, Unknown=1, NotChecked=240, Total=15006 [2022-02-10 22:29:06,699 INFO L934 BasicCegarLoop]: 641 mSDtfsCounter, 3822 mSDsluCounter, 13207 mSDsCounter, 0 mSdLazyCounter, 3688 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3822 SdHoareTripleChecker+Valid, 13452 SdHoareTripleChecker+Invalid, 5613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1858 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:29:06,700 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3822 Valid, 13452 Invalid, 5613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3688 Invalid, 0 Unknown, 1858 Unchecked, 1.5s Time] [2022-02-10 22:29:06,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45958 states. [2022-02-10 22:29:07,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45958 to 17361. [2022-02-10 22:29:07,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17361 states, 17360 states have (on average 2.8690668202764975) internal successors, (49807), 17360 states have internal predecessors, (49807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:07,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17361 states to 17361 states and 49807 transitions. [2022-02-10 22:29:07,162 INFO L78 Accepts]: Start accepts. Automaton has 17361 states and 49807 transitions. Word has length 177 [2022-02-10 22:29:07,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:29:07,162 INFO L470 AbstractCegarLoop]: Abstraction has 17361 states and 49807 transitions. [2022-02-10 22:29:07,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:07,162 INFO L276 IsEmpty]: Start isEmpty. Operand 17361 states and 49807 transitions. [2022-02-10 22:29:07,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:29:07,187 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:29:07,187 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:29:07,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-10 22:29:07,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:29:07,387 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:29:07,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:29:07,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1865483718, now seen corresponding path program 14 times [2022-02-10 22:29:07,388 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:29:07,388 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310264185] [2022-02-10 22:29:07,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:29:07,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:29:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:29:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:07,663 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:29:07,663 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310264185] [2022-02-10 22:29:07,663 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310264185] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:29:07,663 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465714942] [2022-02-10 22:29:07,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:29:07,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:29:07,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:29:07,665 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:29:07,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-10 22:29:07,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:29:07,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:29:07,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-10 22:29:07,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:29:08,091 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-02-10 22:29:08,091 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:29:08,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:08,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:29:08,315 INFO L353 Elim1Store]: treesize reduction 42, result has 50.6 percent of original size [2022-02-10 22:29:08,315 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 50 [2022-02-10 22:29:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:08,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465714942] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:29:08,437 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:29:08,437 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 9] total 35 [2022-02-10 22:29:08,437 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987101086] [2022-02-10 22:29:08,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:29:08,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 22:29:08,438 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:29:08,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 22:29:08,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1030, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 22:29:08,438 INFO L87 Difference]: Start difference. First operand 17361 states and 49807 transitions. Second operand has 35 states, 35 states have (on average 9.057142857142857) internal successors, (317), 35 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:09,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:29:09,970 INFO L93 Difference]: Finished difference Result 37222 states and 107343 transitions. [2022-02-10 22:29:09,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-10 22:29:09,970 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 9.057142857142857) internal successors, (317), 35 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:29:09,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:29:10,042 INFO L225 Difference]: With dead ends: 37222 [2022-02-10 22:29:10,042 INFO L226 Difference]: Without dead ends: 37222 [2022-02-10 22:29:10,043 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1143, Invalid=4407, Unknown=0, NotChecked=0, Total=5550 [2022-02-10 22:29:10,044 INFO L934 BasicCegarLoop]: 465 mSDtfsCounter, 1664 mSDsluCounter, 5983 mSDsCounter, 0 mSdLazyCounter, 1827 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1664 SdHoareTripleChecker+Valid, 6300 SdHoareTripleChecker+Invalid, 1952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:29:10,044 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1664 Valid, 6300 Invalid, 1952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1827 Invalid, 0 Unknown, 98 Unchecked, 0.6s Time] [2022-02-10 22:29:10,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37222 states. [2022-02-10 22:29:10,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37222 to 17345. [2022-02-10 22:29:10,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17345 states, 17344 states have (on average 2.868254151291513) internal successors, (49747), 17344 states have internal predecessors, (49747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:10,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17345 states to 17345 states and 49747 transitions. [2022-02-10 22:29:10,472 INFO L78 Accepts]: Start accepts. Automaton has 17345 states and 49747 transitions. Word has length 177 [2022-02-10 22:29:10,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:29:10,472 INFO L470 AbstractCegarLoop]: Abstraction has 17345 states and 49747 transitions. [2022-02-10 22:29:10,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.057142857142857) internal successors, (317), 35 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:10,472 INFO L276 IsEmpty]: Start isEmpty. Operand 17345 states and 49747 transitions. [2022-02-10 22:29:10,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:29:10,495 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:29:10,495 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:29:10,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-10 22:29:10,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:29:10,696 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:29:10,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:29:10,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1914474352, now seen corresponding path program 16 times [2022-02-10 22:29:10,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:29:10,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491885516] [2022-02-10 22:29:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:29:10,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:29:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:29:11,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:11,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:29:11,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491885516] [2022-02-10 22:29:11,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491885516] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:29:11,001 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:29:11,001 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:29:11,001 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429004095] [2022-02-10 22:29:11,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:29:11,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:29:11,002 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:29:11,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:29:11,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:29:11,002 INFO L87 Difference]: Start difference. First operand 17345 states and 49747 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:11,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:29:11,796 INFO L93 Difference]: Finished difference Result 30631 states and 88189 transitions. [2022-02-10 22:29:11,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 22:29:11,797 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:29:11,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:29:11,852 INFO L225 Difference]: With dead ends: 30631 [2022-02-10 22:29:11,852 INFO L226 Difference]: Without dead ends: 30631 [2022-02-10 22:29:11,853 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=429, Invalid=1377, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 22:29:11,853 INFO L934 BasicCegarLoop]: 413 mSDtfsCounter, 1137 mSDsluCounter, 4021 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 4338 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:29:11,853 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 4338 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:29:11,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30631 states. [2022-02-10 22:29:12,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30631 to 17377. [2022-02-10 22:29:12,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17377 states, 17376 states have (on average 2.868957182320442) internal successors, (49851), 17376 states have internal predecessors, (49851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17377 states to 17377 states and 49851 transitions. [2022-02-10 22:29:12,202 INFO L78 Accepts]: Start accepts. Automaton has 17377 states and 49851 transitions. Word has length 177 [2022-02-10 22:29:12,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:29:12,202 INFO L470 AbstractCegarLoop]: Abstraction has 17377 states and 49851 transitions. [2022-02-10 22:29:12,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:12,202 INFO L276 IsEmpty]: Start isEmpty. Operand 17377 states and 49851 transitions. [2022-02-10 22:29:12,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:29:12,227 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:29:12,227 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:29:12,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-02-10 22:29:12,227 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:29:12,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:29:12,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1042251538, now seen corresponding path program 17 times [2022-02-10 22:29:12,228 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:29:12,228 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916608520] [2022-02-10 22:29:12,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:29:12,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:29:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:29:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:12,556 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:29:12,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916608520] [2022-02-10 22:29:12,556 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916608520] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:29:12,556 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:29:12,556 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:29:12,556 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855182836] [2022-02-10 22:29:12,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:29:12,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:29:12,556 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:29:12,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:29:12,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:29:12,557 INFO L87 Difference]: Start difference. First operand 17377 states and 49851 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:13,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:29:13,292 INFO L93 Difference]: Finished difference Result 27660 states and 79892 transitions. [2022-02-10 22:29:13,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:29:13,293 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:29:13,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:29:13,346 INFO L225 Difference]: With dead ends: 27660 [2022-02-10 22:29:13,347 INFO L226 Difference]: Without dead ends: 27660 [2022-02-10 22:29:13,347 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=388, Invalid=1252, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 22:29:13,347 INFO L934 BasicCegarLoop]: 379 mSDtfsCounter, 898 mSDsluCounter, 3256 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:29:13,347 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [898 Valid, 3557 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:29:13,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27660 states. [2022-02-10 22:29:13,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27660 to 17385. [2022-02-10 22:29:13,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17385 states, 17384 states have (on average 2.8693626323055685) internal successors, (49881), 17384 states have internal predecessors, (49881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:13,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17385 states to 17385 states and 49881 transitions. [2022-02-10 22:29:13,822 INFO L78 Accepts]: Start accepts. Automaton has 17385 states and 49881 transitions. Word has length 177 [2022-02-10 22:29:13,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:29:13,822 INFO L470 AbstractCegarLoop]: Abstraction has 17385 states and 49881 transitions. [2022-02-10 22:29:13,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:13,822 INFO L276 IsEmpty]: Start isEmpty. Operand 17385 states and 49881 transitions. [2022-02-10 22:29:13,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:29:13,844 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:29:13,844 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:29:13,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-02-10 22:29:13,844 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:29:13,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:29:13,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1153370902, now seen corresponding path program 22 times [2022-02-10 22:29:13,845 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:29:13,845 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724569265] [2022-02-10 22:29:13,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:29:13,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:29:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:29:14,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:14,148 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:29:14,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724569265] [2022-02-10 22:29:14,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724569265] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:29:14,148 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:29:14,148 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:29:14,148 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41580647] [2022-02-10 22:29:14,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:29:14,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:29:14,148 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:29:14,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:29:14,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:29:14,149 INFO L87 Difference]: Start difference. First operand 17385 states and 49881 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:14,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:29:14,878 INFO L93 Difference]: Finished difference Result 27324 states and 78860 transitions. [2022-02-10 22:29:14,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:29:14,879 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:29:14,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:29:14,931 INFO L225 Difference]: With dead ends: 27324 [2022-02-10 22:29:14,931 INFO L226 Difference]: Without dead ends: 27324 [2022-02-10 22:29:14,932 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 22:29:14,932 INFO L934 BasicCegarLoop]: 365 mSDtfsCounter, 804 mSDsluCounter, 3743 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 4028 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:29:14,932 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 4028 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:29:14,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27324 states. [2022-02-10 22:29:15,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27324 to 17417. [2022-02-10 22:29:15,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17417 states, 17416 states have (on average 2.8691433164905833) internal successors, (49969), 17416 states have internal predecessors, (49969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:15,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17417 states to 17417 states and 49969 transitions. [2022-02-10 22:29:15,258 INFO L78 Accepts]: Start accepts. Automaton has 17417 states and 49969 transitions. Word has length 177 [2022-02-10 22:29:15,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:29:15,258 INFO L470 AbstractCegarLoop]: Abstraction has 17417 states and 49969 transitions. [2022-02-10 22:29:15,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:15,258 INFO L276 IsEmpty]: Start isEmpty. Operand 17417 states and 49969 transitions. [2022-02-10 22:29:15,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:29:15,282 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:29:15,282 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:29:15,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-02-10 22:29:15,282 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:29:15,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:29:15,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1560044802, now seen corresponding path program 23 times [2022-02-10 22:29:15,282 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:29:15,282 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847609305] [2022-02-10 22:29:15,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:29:15,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:29:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:29:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:15,578 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:29:15,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847609305] [2022-02-10 22:29:15,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847609305] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:29:15,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600265348] [2022-02-10 22:29:15,578 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:29:15,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:29:15,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:29:15,579 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:29:15,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-10 22:29:15,705 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:29:15,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:29:15,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 22:29:15,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:29:15,840 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:29:15,951 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:29:16,252 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 22:29:16,252 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 22:29:16,404 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:29:16,656 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:29:16,804 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:29:17,227 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:29:17,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:29:17,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:29:17,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:17,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600265348] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:29:17,704 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:29:17,704 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 10] total 50 [2022-02-10 22:29:17,704 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246605543] [2022-02-10 22:29:17,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:29:17,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-10 22:29:17,704 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:29:17,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-10 22:29:17,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=2208, Unknown=8, NotChecked=0, Total=2450 [2022-02-10 22:29:17,705 INFO L87 Difference]: Start difference. First operand 17417 states and 49969 transitions. Second operand has 50 states, 50 states have (on average 7.98) internal successors, (399), 50 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:26,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:29:26,429 INFO L93 Difference]: Finished difference Result 43188 states and 124539 transitions. [2022-02-10 22:29:26,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-10 22:29:26,429 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.98) internal successors, (399), 50 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:29:26,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:29:26,516 INFO L225 Difference]: With dead ends: 43188 [2022-02-10 22:29:26,517 INFO L226 Difference]: Without dead ends: 43188 [2022-02-10 22:29:26,517 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 334 SyntacticMatches, 7 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3235 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=2393, Invalid=9589, Unknown=8, NotChecked=0, Total=11990 [2022-02-10 22:29:26,518 INFO L934 BasicCegarLoop]: 528 mSDtfsCounter, 3669 mSDsluCounter, 10246 mSDsCounter, 0 mSdLazyCounter, 3273 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3669 SdHoareTripleChecker+Valid, 10507 SdHoareTripleChecker+Invalid, 3858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 538 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:29:26,518 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3669 Valid, 10507 Invalid, 3858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 3273 Invalid, 0 Unknown, 538 Unchecked, 1.4s Time] [2022-02-10 22:29:26,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43188 states. [2022-02-10 22:29:26,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43188 to 19425. [2022-02-10 22:29:26,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19425 states, 19424 states have (on average 2.8825679571663922) internal successors, (55991), 19424 states have internal predecessors, (55991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:26,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19425 states to 19425 states and 55991 transitions. [2022-02-10 22:29:26,987 INFO L78 Accepts]: Start accepts. Automaton has 19425 states and 55991 transitions. Word has length 177 [2022-02-10 22:29:26,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:29:26,987 INFO L470 AbstractCegarLoop]: Abstraction has 19425 states and 55991 transitions. [2022-02-10 22:29:26,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.98) internal successors, (399), 50 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:26,987 INFO L276 IsEmpty]: Start isEmpty. Operand 19425 states and 55991 transitions. [2022-02-10 22:29:27,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:29:27,013 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:29:27,013 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:29:27,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-10 22:29:27,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:29:27,214 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:29:27,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:29:27,214 INFO L85 PathProgramCache]: Analyzing trace with hash 796291028, now seen corresponding path program 18 times [2022-02-10 22:29:27,214 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:29:27,214 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260272030] [2022-02-10 22:29:27,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:29:27,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:29:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:29:27,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:27,529 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:29:27,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260272030] [2022-02-10 22:29:27,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260272030] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:29:27,529 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:29:27,529 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:29:27,529 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715221671] [2022-02-10 22:29:27,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:29:27,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:29:27,529 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:29:27,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:29:27,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:29:27,530 INFO L87 Difference]: Start difference. First operand 19425 states and 55991 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:28,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:29:28,165 INFO L93 Difference]: Finished difference Result 29322 states and 84802 transitions. [2022-02-10 22:29:28,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:29:28,165 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:29:28,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:29:28,221 INFO L225 Difference]: With dead ends: 29322 [2022-02-10 22:29:28,221 INFO L226 Difference]: Without dead ends: 29322 [2022-02-10 22:29:28,222 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=1081, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:29:28,222 INFO L934 BasicCegarLoop]: 364 mSDtfsCounter, 837 mSDsluCounter, 3103 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 3398 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:29:28,222 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [837 Valid, 3398 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:29:28,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29322 states. [2022-02-10 22:29:28,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29322 to 19441. [2022-02-10 22:29:28,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19441 states, 19440 states have (on average 2.8832818930041153) internal successors, (56051), 19440 states have internal predecessors, (56051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:28,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19441 states to 19441 states and 56051 transitions. [2022-02-10 22:29:28,663 INFO L78 Accepts]: Start accepts. Automaton has 19441 states and 56051 transitions. Word has length 177 [2022-02-10 22:29:28,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:29:28,663 INFO L470 AbstractCegarLoop]: Abstraction has 19441 states and 56051 transitions. [2022-02-10 22:29:28,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:28,663 INFO L276 IsEmpty]: Start isEmpty. Operand 19441 states and 56051 transitions. [2022-02-10 22:29:28,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:29:28,689 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:29:28,689 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:29:28,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-02-10 22:29:28,690 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:29:28,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:29:28,690 INFO L85 PathProgramCache]: Analyzing trace with hash -730622534, now seen corresponding path program 15 times [2022-02-10 22:29:28,690 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:29:28,690 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785503776] [2022-02-10 22:29:28,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:29:28,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:29:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:29:28,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:28,993 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:29:28,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785503776] [2022-02-10 22:29:28,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785503776] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:29:28,993 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:29:28,994 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:29:28,994 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981629344] [2022-02-10 22:29:28,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:29:28,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:29:28,994 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:29:28,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:29:28,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:29:28,994 INFO L87 Difference]: Start difference. First operand 19441 states and 56051 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:29,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:29:29,624 INFO L93 Difference]: Finished difference Result 29292 states and 84724 transitions. [2022-02-10 22:29:29,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:29:29,625 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:29:29,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:29:29,678 INFO L225 Difference]: With dead ends: 29292 [2022-02-10 22:29:29,678 INFO L226 Difference]: Without dead ends: 29292 [2022-02-10 22:29:29,678 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=319, Invalid=1013, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:29:29,678 INFO L934 BasicCegarLoop]: 363 mSDtfsCounter, 1074 mSDsluCounter, 2914 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 3213 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:29:29,679 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1074 Valid, 3213 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:29:29,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29292 states. [2022-02-10 22:29:29,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29292 to 19449. [2022-02-10 22:29:29,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19449 states, 19448 states have (on average 2.8832270670505964) internal successors, (56073), 19448 states have internal predecessors, (56073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:30,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19449 states to 19449 states and 56073 transitions. [2022-02-10 22:29:30,020 INFO L78 Accepts]: Start accepts. Automaton has 19449 states and 56073 transitions. Word has length 177 [2022-02-10 22:29:30,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:29:30,021 INFO L470 AbstractCegarLoop]: Abstraction has 19449 states and 56073 transitions. [2022-02-10 22:29:30,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:30,021 INFO L276 IsEmpty]: Start isEmpty. Operand 19449 states and 56073 transitions. [2022-02-10 22:29:30,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:29:30,047 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:29:30,047 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:29:30,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-02-10 22:29:30,048 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:29:30,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:29:30,048 INFO L85 PathProgramCache]: Analyzing trace with hash -529073644, now seen corresponding path program 24 times [2022-02-10 22:29:30,048 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:29:30,048 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596795079] [2022-02-10 22:29:30,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:29:30,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:29:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:29:30,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:30,359 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:29:30,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596795079] [2022-02-10 22:29:30,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596795079] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:29:30,359 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:29:30,360 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:29:30,360 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324099314] [2022-02-10 22:29:30,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:29:30,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:29:30,360 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:29:30,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:29:30,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:29:30,360 INFO L87 Difference]: Start difference. First operand 19449 states and 56073 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:31,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:29:31,004 INFO L93 Difference]: Finished difference Result 29120 states and 84238 transitions. [2022-02-10 22:29:31,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 22:29:31,005 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:29:31,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:29:31,060 INFO L225 Difference]: With dead ends: 29120 [2022-02-10 22:29:31,060 INFO L226 Difference]: Without dead ends: 29120 [2022-02-10 22:29:31,060 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=376, Invalid=1184, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 22:29:31,060 INFO L934 BasicCegarLoop]: 340 mSDtfsCounter, 1167 mSDsluCounter, 2475 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:29:31,060 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1167 Valid, 2770 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:29:31,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29120 states. [2022-02-10 22:29:31,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29120 to 19441. [2022-02-10 22:29:31,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19441 states, 19440 states have (on average 2.8832818930041153) internal successors, (56051), 19440 states have internal predecessors, (56051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:31,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19441 states to 19441 states and 56051 transitions. [2022-02-10 22:29:31,402 INFO L78 Accepts]: Start accepts. Automaton has 19441 states and 56051 transitions. Word has length 177 [2022-02-10 22:29:31,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:29:31,402 INFO L470 AbstractCegarLoop]: Abstraction has 19441 states and 56051 transitions. [2022-02-10 22:29:31,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:31,402 INFO L276 IsEmpty]: Start isEmpty. Operand 19441 states and 56051 transitions. [2022-02-10 22:29:31,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:29:31,428 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:29:31,428 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:29:31,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-02-10 22:29:31,428 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:29:31,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:29:31,429 INFO L85 PathProgramCache]: Analyzing trace with hash -65498902, now seen corresponding path program 14 times [2022-02-10 22:29:31,429 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:29:31,429 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026337655] [2022-02-10 22:29:31,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:29:31,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:29:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:29:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:31,762 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:29:31,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026337655] [2022-02-10 22:29:31,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026337655] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:29:31,762 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:29:31,762 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:29:31,762 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40702079] [2022-02-10 22:29:31,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:29:31,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:29:31,762 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:29:31,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:29:31,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:29:31,763 INFO L87 Difference]: Start difference. First operand 19441 states and 56051 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:32,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:29:32,458 INFO L93 Difference]: Finished difference Result 29258 states and 84636 transitions. [2022-02-10 22:29:32,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 22:29:32,458 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:29:32,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:29:32,512 INFO L225 Difference]: With dead ends: 29258 [2022-02-10 22:29:32,512 INFO L226 Difference]: Without dead ends: 29258 [2022-02-10 22:29:32,512 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=369, Invalid=1113, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:29:32,512 INFO L934 BasicCegarLoop]: 372 mSDtfsCounter, 1117 mSDsluCounter, 2926 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 3244 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:29:32,512 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1117 Valid, 3244 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:29:32,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29258 states. [2022-02-10 22:29:32,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29258 to 19449. [2022-02-10 22:29:32,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19449 states, 19448 states have (on average 2.881993006993007) internal successors, (56049), 19448 states have internal predecessors, (56049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:32,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19449 states to 19449 states and 56049 transitions. [2022-02-10 22:29:32,861 INFO L78 Accepts]: Start accepts. Automaton has 19449 states and 56049 transitions. Word has length 177 [2022-02-10 22:29:32,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:29:32,861 INFO L470 AbstractCegarLoop]: Abstraction has 19449 states and 56049 transitions. [2022-02-10 22:29:32,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:32,861 INFO L276 IsEmpty]: Start isEmpty. Operand 19449 states and 56049 transitions. [2022-02-10 22:29:32,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:29:32,887 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:29:32,887 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:29:32,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-02-10 22:29:32,887 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:29:32,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:29:32,888 INFO L85 PathProgramCache]: Analyzing trace with hash -556952778, now seen corresponding path program 16 times [2022-02-10 22:29:32,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:29:32,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825975352] [2022-02-10 22:29:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:29:32,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:29:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:29:33,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:33,198 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:29:33,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825975352] [2022-02-10 22:29:33,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825975352] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:29:33,198 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:29:33,198 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:29:33,198 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136734397] [2022-02-10 22:29:33,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:29:33,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:29:33,198 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:29:33,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:29:33,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:29:33,199 INFO L87 Difference]: Start difference. First operand 19449 states and 56049 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:33,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:29:33,996 INFO L93 Difference]: Finished difference Result 30164 states and 87170 transitions. [2022-02-10 22:29:33,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 22:29:33,996 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:29:33,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:29:34,055 INFO L225 Difference]: With dead ends: 30164 [2022-02-10 22:29:34,055 INFO L226 Difference]: Without dead ends: 30164 [2022-02-10 22:29:34,056 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=420, Invalid=1302, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 22:29:34,056 INFO L934 BasicCegarLoop]: 390 mSDtfsCounter, 1183 mSDsluCounter, 3284 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 3607 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:29:34,056 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1183 Valid, 3607 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:29:34,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30164 states. [2022-02-10 22:29:34,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30164 to 19513. [2022-02-10 22:29:34,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19513 states, 19512 states have (on average 2.881560065600656) internal successors, (56225), 19512 states have internal predecessors, (56225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:34,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19513 states to 19513 states and 56225 transitions. [2022-02-10 22:29:34,431 INFO L78 Accepts]: Start accepts. Automaton has 19513 states and 56225 transitions. Word has length 177 [2022-02-10 22:29:34,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:29:34,431 INFO L470 AbstractCegarLoop]: Abstraction has 19513 states and 56225 transitions. [2022-02-10 22:29:34,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:34,431 INFO L276 IsEmpty]: Start isEmpty. Operand 19513 states and 56225 transitions. [2022-02-10 22:29:34,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:29:34,459 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:29:34,459 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:29:34,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-02-10 22:29:34,459 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:29:34,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:29:34,459 INFO L85 PathProgramCache]: Analyzing trace with hash 685917474, now seen corresponding path program 17 times [2022-02-10 22:29:34,459 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:29:34,459 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705724700] [2022-02-10 22:29:34,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:29:34,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:29:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:29:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:34,755 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:29:34,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705724700] [2022-02-10 22:29:34,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705724700] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:29:34,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847767267] [2022-02-10 22:29:34,755 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:29:34,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:29:34,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:29:34,756 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:29:34,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-10 22:29:34,887 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:29:34,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:29:34,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 70 conjunts are in the unsatisfiable core [2022-02-10 22:29:34,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:29:35,023 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:29:35,135 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:29:35,433 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 22:29:35,433 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 22:29:35,596 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:29:35,836 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:29:35,982 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:29:36,301 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:29:36,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:29:36,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:29:36,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:36,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847767267] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:29:36,747 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:29:36,747 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 10] total 50 [2022-02-10 22:29:36,747 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506751788] [2022-02-10 22:29:36,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:29:36,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-10 22:29:36,747 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:29:36,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-10 22:29:36,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=2201, Unknown=9, NotChecked=0, Total=2450 [2022-02-10 22:29:36,748 INFO L87 Difference]: Start difference. First operand 19513 states and 56225 transitions. Second operand has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:43,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:29:43,014 INFO L93 Difference]: Finished difference Result 46788 states and 134933 transitions. [2022-02-10 22:29:43,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-10 22:29:43,015 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:29:43,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:29:43,108 INFO L225 Difference]: With dead ends: 46788 [2022-02-10 22:29:43,108 INFO L226 Difference]: Without dead ends: 46788 [2022-02-10 22:29:43,110 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 332 SyntacticMatches, 8 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 3392 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2508, Invalid=9693, Unknown=9, NotChecked=0, Total=12210 [2022-02-10 22:29:43,110 INFO L934 BasicCegarLoop]: 471 mSDtfsCounter, 3369 mSDsluCounter, 8310 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3369 SdHoareTripleChecker+Valid, 8619 SdHoareTripleChecker+Invalid, 2791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 366 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:29:43,110 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3369 Valid, 8619 Invalid, 2791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2380 Invalid, 0 Unknown, 366 Unchecked, 1.0s Time] [2022-02-10 22:29:43,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46788 states. [2022-02-10 22:29:43,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46788 to 19863. [2022-02-10 22:29:43,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19863 states, 19862 states have (on average 2.8821367435303595) internal successors, (57245), 19862 states have internal predecessors, (57245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:43,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19863 states to 19863 states and 57245 transitions. [2022-02-10 22:29:43,610 INFO L78 Accepts]: Start accepts. Automaton has 19863 states and 57245 transitions. Word has length 177 [2022-02-10 22:29:43,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:29:43,610 INFO L470 AbstractCegarLoop]: Abstraction has 19863 states and 57245 transitions. [2022-02-10 22:29:43,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:43,610 INFO L276 IsEmpty]: Start isEmpty. Operand 19863 states and 57245 transitions. [2022-02-10 22:29:43,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:29:43,637 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:29:43,637 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:29:43,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-10 22:29:43,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2022-02-10 22:29:43,837 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:29:43,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:29:43,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1345510394, now seen corresponding path program 18 times [2022-02-10 22:29:43,838 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:29:43,838 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528705343] [2022-02-10 22:29:43,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:29:43,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:29:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:29:44,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:44,200 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:29:44,200 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528705343] [2022-02-10 22:29:44,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528705343] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:29:44,200 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061789218] [2022-02-10 22:29:44,200 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:29:44,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:29:44,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:29:44,202 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:29:44,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-10 22:29:44,333 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 22:29:44,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:29:44,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 22:29:44,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:29:44,684 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-02-10 22:29:44,684 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:29:44,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:44,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:29:44,897 INFO L353 Elim1Store]: treesize reduction 42, result has 50.6 percent of original size [2022-02-10 22:29:44,897 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 50 [2022-02-10 22:29:45,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:45,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061789218] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:29:45,019 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:29:45,019 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 9] total 33 [2022-02-10 22:29:45,019 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619423983] [2022-02-10 22:29:45,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:29:45,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:29:45,019 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:29:45,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:29:45,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:29:45,020 INFO L87 Difference]: Start difference. First operand 19863 states and 57245 transitions. Second operand has 33 states, 33 states have (on average 9.757575757575758) internal successors, (322), 33 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:46,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:29:46,407 INFO L93 Difference]: Finished difference Result 39351 states and 113651 transitions. [2022-02-10 22:29:46,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-10 22:29:46,407 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.757575757575758) internal successors, (322), 33 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:29:46,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:29:46,486 INFO L225 Difference]: With dead ends: 39351 [2022-02-10 22:29:46,486 INFO L226 Difference]: Without dead ends: 39351 [2022-02-10 22:29:46,487 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=974, Invalid=3856, Unknown=0, NotChecked=0, Total=4830 [2022-02-10 22:29:46,487 INFO L934 BasicCegarLoop]: 488 mSDtfsCounter, 1669 mSDsluCounter, 6351 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 6687 SdHoareTripleChecker+Invalid, 2100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 353 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:29:46,487 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1669 Valid, 6687 Invalid, 2100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1720 Invalid, 0 Unknown, 353 Unchecked, 0.6s Time] [2022-02-10 22:29:46,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39351 states. [2022-02-10 22:29:46,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39351 to 19751. [2022-02-10 22:29:46,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19751 states, 19750 states have (on average 2.8820759493670884) internal successors, (56921), 19750 states have internal predecessors, (56921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:46,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19751 states to 19751 states and 56921 transitions. [2022-02-10 22:29:46,937 INFO L78 Accepts]: Start accepts. Automaton has 19751 states and 56921 transitions. Word has length 177 [2022-02-10 22:29:46,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:29:46,937 INFO L470 AbstractCegarLoop]: Abstraction has 19751 states and 56921 transitions. [2022-02-10 22:29:46,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.757575757575758) internal successors, (322), 33 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:46,938 INFO L276 IsEmpty]: Start isEmpty. Operand 19751 states and 56921 transitions. [2022-02-10 22:29:46,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:29:46,965 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:29:46,965 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:29:46,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-02-10 22:29:47,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2022-02-10 22:29:47,166 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:29:47,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:29:47,166 INFO L85 PathProgramCache]: Analyzing trace with hash 732676534, now seen corresponding path program 19 times [2022-02-10 22:29:47,166 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:29:47,166 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511740606] [2022-02-10 22:29:47,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:29:47,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:29:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:29:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:47,501 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:29:47,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511740606] [2022-02-10 22:29:47,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511740606] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:29:47,501 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:29:47,501 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:29:47,501 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393335331] [2022-02-10 22:29:47,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:29:47,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:29:47,502 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:29:47,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:29:47,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:29:47,502 INFO L87 Difference]: Start difference. First operand 19751 states and 56921 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:48,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:29:48,094 INFO L93 Difference]: Finished difference Result 29826 states and 86316 transitions. [2022-02-10 22:29:48,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 22:29:48,094 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:29:48,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:29:48,151 INFO L225 Difference]: With dead ends: 29826 [2022-02-10 22:29:48,152 INFO L226 Difference]: Without dead ends: 29826 [2022-02-10 22:29:48,152 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=364, Invalid=1196, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 22:29:48,152 INFO L934 BasicCegarLoop]: 359 mSDtfsCounter, 1161 mSDsluCounter, 2213 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:29:48,152 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1161 Valid, 2516 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:29:48,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29826 states. [2022-02-10 22:29:48,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29826 to 19767. [2022-02-10 22:29:48,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19767 states, 19766 states have (on average 2.882373773145806) internal successors, (56973), 19766 states have internal predecessors, (56973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:48,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19767 states to 19767 states and 56973 transitions. [2022-02-10 22:29:48,507 INFO L78 Accepts]: Start accepts. Automaton has 19767 states and 56973 transitions. Word has length 177 [2022-02-10 22:29:48,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:29:48,508 INFO L470 AbstractCegarLoop]: Abstraction has 19767 states and 56973 transitions. [2022-02-10 22:29:48,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:48,508 INFO L276 IsEmpty]: Start isEmpty. Operand 19767 states and 56973 transitions. [2022-02-10 22:29:48,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:29:48,534 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:29:48,534 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:29:48,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-02-10 22:29:48,535 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:29:48,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:29:48,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1840748610, now seen corresponding path program 19 times [2022-02-10 22:29:48,535 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:29:48,535 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93909687] [2022-02-10 22:29:48,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:29:48,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:29:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:29:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:48,908 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:29:48,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93909687] [2022-02-10 22:29:48,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93909687] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:29:48,908 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:29:48,908 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:29:48,909 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435933787] [2022-02-10 22:29:48,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:29:48,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:29:48,909 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:29:48,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:29:48,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:29:48,909 INFO L87 Difference]: Start difference. First operand 19767 states and 56973 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:49,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:29:49,516 INFO L93 Difference]: Finished difference Result 29482 states and 85254 transitions. [2022-02-10 22:29:49,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 22:29:49,517 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:29:49,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:29:49,573 INFO L225 Difference]: With dead ends: 29482 [2022-02-10 22:29:49,573 INFO L226 Difference]: Without dead ends: 29482 [2022-02-10 22:29:49,574 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=357, Invalid=1125, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:29:49,574 INFO L934 BasicCegarLoop]: 346 mSDtfsCounter, 1051 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 2739 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:29:49,574 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 2739 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:29:49,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29482 states. [2022-02-10 22:29:49,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29482 to 19799. [2022-02-10 22:29:49,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19799 states, 19798 states have (on average 2.8821598141226388) internal successors, (57061), 19798 states have internal predecessors, (57061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:49,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19799 states to 19799 states and 57061 transitions. [2022-02-10 22:29:49,930 INFO L78 Accepts]: Start accepts. Automaton has 19799 states and 57061 transitions. Word has length 177 [2022-02-10 22:29:49,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:29:49,930 INFO L470 AbstractCegarLoop]: Abstraction has 19799 states and 57061 transitions. [2022-02-10 22:29:49,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:49,931 INFO L276 IsEmpty]: Start isEmpty. Operand 19799 states and 57061 transitions. [2022-02-10 22:29:49,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:29:49,958 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:29:49,958 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:29:49,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-02-10 22:29:49,958 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:29:49,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:29:49,959 INFO L85 PathProgramCache]: Analyzing trace with hash -597878358, now seen corresponding path program 20 times [2022-02-10 22:29:49,959 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:29:49,959 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31951880] [2022-02-10 22:29:49,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:29:49,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:29:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:29:50,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:50,255 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:29:50,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31951880] [2022-02-10 22:29:50,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31951880] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:29:50,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472567054] [2022-02-10 22:29:50,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:29:50,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:29:50,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:29:50,256 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:29:50,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-10 22:29:50,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:29:50,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:29:50,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-10 22:29:50,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:29:50,773 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-02-10 22:29:50,773 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:29:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:50,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:29:50,996 INFO L353 Elim1Store]: treesize reduction 42, result has 50.6 percent of original size [2022-02-10 22:29:50,996 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 50 [2022-02-10 22:29:51,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:51,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472567054] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:29:51,116 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:29:51,116 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 29 [2022-02-10 22:29:51,116 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502325545] [2022-02-10 22:29:51,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:29:51,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 22:29:51,117 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:29:51,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 22:29:51,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2022-02-10 22:29:51,117 INFO L87 Difference]: Start difference. First operand 19799 states and 57061 transitions. Second operand has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:52,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:29:52,493 INFO L93 Difference]: Finished difference Result 33202 states and 95802 transitions. [2022-02-10 22:29:52,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-10 22:29:52,493 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:29:52,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:29:52,562 INFO L225 Difference]: With dead ends: 33202 [2022-02-10 22:29:52,562 INFO L226 Difference]: Without dead ends: 33202 [2022-02-10 22:29:52,563 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 359 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1040, Invalid=3790, Unknown=0, NotChecked=0, Total=4830 [2022-02-10 22:29:52,563 INFO L934 BasicCegarLoop]: 439 mSDtfsCounter, 1664 mSDsluCounter, 4937 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1664 SdHoareTripleChecker+Valid, 5257 SdHoareTripleChecker+Invalid, 2042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 584 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:29:52,563 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1664 Valid, 5257 Invalid, 2042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1426 Invalid, 0 Unknown, 584 Unchecked, 0.5s Time] [2022-02-10 22:29:52,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33202 states. [2022-02-10 22:29:52,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33202 to 19817. [2022-02-10 22:29:52,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19817 states, 19816 states have (on average 2.88156035526847) internal successors, (57101), 19816 states have internal predecessors, (57101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:52,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19817 states to 19817 states and 57101 transitions. [2022-02-10 22:29:52,974 INFO L78 Accepts]: Start accepts. Automaton has 19817 states and 57101 transitions. Word has length 177 [2022-02-10 22:29:52,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:29:52,974 INFO L470 AbstractCegarLoop]: Abstraction has 19817 states and 57101 transitions. [2022-02-10 22:29:52,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:52,974 INFO L276 IsEmpty]: Start isEmpty. Operand 19817 states and 57101 transitions. [2022-02-10 22:29:53,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:29:53,000 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:29:53,000 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:29:53,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-10 22:29:53,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:29:53,201 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:29:53,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:29:53,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1723748196, now seen corresponding path program 20 times [2022-02-10 22:29:53,201 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:29:53,201 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819094886] [2022-02-10 22:29:53,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:29:53,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:29:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:29:53,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:53,617 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:29:53,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819094886] [2022-02-10 22:29:53,618 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819094886] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:29:53,618 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:29:53,618 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:29:53,618 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403721099] [2022-02-10 22:29:53,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:29:53,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:29:53,618 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:29:53,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:29:53,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:29:53,618 INFO L87 Difference]: Start difference. First operand 19817 states and 57101 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:54,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:29:54,300 INFO L93 Difference]: Finished difference Result 29530 states and 85366 transitions. [2022-02-10 22:29:54,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:29:54,301 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:29:54,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:29:54,359 INFO L225 Difference]: With dead ends: 29530 [2022-02-10 22:29:54,360 INFO L226 Difference]: Without dead ends: 29530 [2022-02-10 22:29:54,360 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:29:54,360 INFO L934 BasicCegarLoop]: 345 mSDtfsCounter, 865 mSDsluCounter, 3344 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 3614 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:29:54,361 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 3614 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:29:54,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29530 states. [2022-02-10 22:29:54,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29530 to 19833. [2022-02-10 22:29:54,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19833 states, 19832 states have (on average 2.882260992335619) internal successors, (57161), 19832 states have internal predecessors, (57161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:54,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19833 states to 19833 states and 57161 transitions. [2022-02-10 22:29:54,714 INFO L78 Accepts]: Start accepts. Automaton has 19833 states and 57161 transitions. Word has length 177 [2022-02-10 22:29:54,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:29:54,714 INFO L470 AbstractCegarLoop]: Abstraction has 19833 states and 57161 transitions. [2022-02-10 22:29:54,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:54,714 INFO L276 IsEmpty]: Start isEmpty. Operand 19833 states and 57161 transitions. [2022-02-10 22:29:54,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:29:54,742 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:29:54,742 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:29:54,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-02-10 22:29:54,742 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:29:54,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:29:54,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1044305538, now seen corresponding path program 21 times [2022-02-10 22:29:54,743 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:29:54,743 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418953440] [2022-02-10 22:29:54,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:29:54,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:29:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:29:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:55,041 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:29:55,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418953440] [2022-02-10 22:29:55,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418953440] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:29:55,041 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:29:55,041 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:29:55,042 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402935668] [2022-02-10 22:29:55,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:29:55,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:29:55,042 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:29:55,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:29:55,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:29:55,042 INFO L87 Difference]: Start difference. First operand 19833 states and 57161 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:55,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:29:55,650 INFO L93 Difference]: Finished difference Result 29484 states and 85236 transitions. [2022-02-10 22:29:55,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:29:55,650 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:29:55,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:29:55,706 INFO L225 Difference]: With dead ends: 29484 [2022-02-10 22:29:55,706 INFO L226 Difference]: Without dead ends: 29484 [2022-02-10 22:29:55,706 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:29:55,706 INFO L934 BasicCegarLoop]: 344 mSDtfsCounter, 879 mSDsluCounter, 2758 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:29:55,706 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 3038 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:29:55,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29484 states. [2022-02-10 22:29:55,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29484 to 19841. [2022-02-10 22:29:56,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19841 states, 19840 states have (on average 2.8822076612903227) internal successors, (57183), 19840 states have internal predecessors, (57183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:56,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19841 states to 19841 states and 57183 transitions. [2022-02-10 22:29:56,056 INFO L78 Accepts]: Start accepts. Automaton has 19841 states and 57183 transitions. Word has length 177 [2022-02-10 22:29:56,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:29:56,057 INFO L470 AbstractCegarLoop]: Abstraction has 19841 states and 57183 transitions. [2022-02-10 22:29:56,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:56,057 INFO L276 IsEmpty]: Start isEmpty. Operand 19841 states and 57183 transitions. [2022-02-10 22:29:56,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:29:56,084 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:29:56,084 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:29:56,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-02-10 22:29:56,085 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:29:56,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:29:56,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1245854428, now seen corresponding path program 25 times [2022-02-10 22:29:56,085 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:29:56,085 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71567805] [2022-02-10 22:29:56,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:29:56,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:29:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:29:56,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:56,411 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:29:56,411 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71567805] [2022-02-10 22:29:56,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71567805] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:29:56,411 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:29:56,411 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:29:56,411 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62161417] [2022-02-10 22:29:56,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:29:56,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:29:56,411 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:29:56,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:29:56,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:29:56,412 INFO L87 Difference]: Start difference. First operand 19841 states and 57183 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:57,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:29:57,084 INFO L93 Difference]: Finished difference Result 29186 states and 84406 transitions. [2022-02-10 22:29:57,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 22:29:57,084 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:29:57,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:29:57,141 INFO L225 Difference]: With dead ends: 29186 [2022-02-10 22:29:57,141 INFO L226 Difference]: Without dead ends: 29186 [2022-02-10 22:29:57,141 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=376, Invalid=1184, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 22:29:57,142 INFO L934 BasicCegarLoop]: 333 mSDtfsCounter, 887 mSDsluCounter, 3017 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 3302 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:29:57,142 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [887 Valid, 3302 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:29:57,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29186 states. [2022-02-10 22:29:57,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29186 to 19833. [2022-02-10 22:29:57,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19833 states, 19832 states have (on average 2.882260992335619) internal successors, (57161), 19832 states have internal predecessors, (57161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:57,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19833 states to 19833 states and 57161 transitions. [2022-02-10 22:29:57,562 INFO L78 Accepts]: Start accepts. Automaton has 19833 states and 57161 transitions. Word has length 177 [2022-02-10 22:29:57,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:29:57,562 INFO L470 AbstractCegarLoop]: Abstraction has 19833 states and 57161 transitions. [2022-02-10 22:29:57,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:57,562 INFO L276 IsEmpty]: Start isEmpty. Operand 19833 states and 57161 transitions. [2022-02-10 22:29:57,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:29:57,589 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:29:57,589 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:29:57,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-02-10 22:29:57,589 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:29:57,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:29:57,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1709429170, now seen corresponding path program 15 times [2022-02-10 22:29:57,590 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:29:57,590 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196660035] [2022-02-10 22:29:57,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:29:57,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:29:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:29:57,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:57,892 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:29:57,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196660035] [2022-02-10 22:29:57,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196660035] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:29:57,892 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:29:57,892 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:29:57,892 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556025101] [2022-02-10 22:29:57,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:29:57,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:29:57,893 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:29:57,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:29:57,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:29:57,893 INFO L87 Difference]: Start difference. First operand 19833 states and 57161 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:58,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:29:58,527 INFO L93 Difference]: Finished difference Result 29330 states and 84818 transitions. [2022-02-10 22:29:58,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 22:29:58,527 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:29:58,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:29:58,586 INFO L225 Difference]: With dead ends: 29330 [2022-02-10 22:29:58,586 INFO L226 Difference]: Without dead ends: 29330 [2022-02-10 22:29:58,587 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=369, Invalid=1113, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:29:58,587 INFO L934 BasicCegarLoop]: 333 mSDtfsCounter, 1195 mSDsluCounter, 2398 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 2687 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:29:58,587 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1195 Valid, 2687 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:29:58,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29330 states. [2022-02-10 22:29:58,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29330 to 19815. [2022-02-10 22:29:58,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19815 states, 19814 states have (on average 2.8815484001211265) internal successors, (57095), 19814 states have internal predecessors, (57095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:58,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19815 states to 19815 states and 57095 transitions. [2022-02-10 22:29:58,954 INFO L78 Accepts]: Start accepts. Automaton has 19815 states and 57095 transitions. Word has length 177 [2022-02-10 22:29:58,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:29:58,954 INFO L470 AbstractCegarLoop]: Abstraction has 19815 states and 57095 transitions. [2022-02-10 22:29:58,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:58,954 INFO L276 IsEmpty]: Start isEmpty. Operand 19815 states and 57095 transitions. [2022-02-10 22:29:58,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:29:58,981 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:29:58,981 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:29:58,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-02-10 22:29:58,981 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:29:58,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:29:58,981 INFO L85 PathProgramCache]: Analyzing trace with hash 895297868, now seen corresponding path program 21 times [2022-02-10 22:29:58,981 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:29:58,981 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271607755] [2022-02-10 22:29:58,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:29:58,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:29:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:29:59,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:29:59,311 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:29:59,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271607755] [2022-02-10 22:29:59,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271607755] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:29:59,311 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:29:59,311 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:29:59,311 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586047804] [2022-02-10 22:29:59,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:29:59,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:29:59,312 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:29:59,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:29:59,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:29:59,312 INFO L87 Difference]: Start difference. First operand 19815 states and 57095 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:29:59,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:29:59,968 INFO L93 Difference]: Finished difference Result 29430 states and 85044 transitions. [2022-02-10 22:29:59,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 22:29:59,968 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:29:59,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:30:00,034 INFO L225 Difference]: With dead ends: 29430 [2022-02-10 22:30:00,034 INFO L226 Difference]: Without dead ends: 29430 [2022-02-10 22:30:00,034 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=1030, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:30:00,035 INFO L934 BasicCegarLoop]: 345 mSDtfsCounter, 954 mSDsluCounter, 3257 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 3527 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:30:00,035 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [954 Valid, 3527 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:30:00,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29430 states. [2022-02-10 22:30:00,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29430 to 19847. [2022-02-10 22:30:00,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19847 states, 19846 states have (on average 2.8825456011286907) internal successors, (57207), 19846 states have internal predecessors, (57207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:00,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19847 states to 19847 states and 57207 transitions. [2022-02-10 22:30:00,404 INFO L78 Accepts]: Start accepts. Automaton has 19847 states and 57207 transitions. Word has length 177 [2022-02-10 22:30:00,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:30:00,404 INFO L470 AbstractCegarLoop]: Abstraction has 19847 states and 57207 transitions. [2022-02-10 22:30:00,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:00,405 INFO L276 IsEmpty]: Start isEmpty. Operand 19847 states and 57207 transitions. [2022-02-10 22:30:00,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:30:00,432 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:30:00,432 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:30:00,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-02-10 22:30:00,432 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:30:00,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:30:00,432 INFO L85 PathProgramCache]: Analyzing trace with hash -631615694, now seen corresponding path program 22 times [2022-02-10 22:30:00,432 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:30:00,432 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469155118] [2022-02-10 22:30:00,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:30:00,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:30:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:30:00,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:30:00,785 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:30:00,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469155118] [2022-02-10 22:30:00,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469155118] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:30:00,786 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:30:00,786 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:30:00,786 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661116616] [2022-02-10 22:30:00,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:30:00,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:30:00,786 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:30:00,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:30:00,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:30:00,786 INFO L87 Difference]: Start difference. First operand 19847 states and 57207 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:01,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:30:01,420 INFO L93 Difference]: Finished difference Result 29266 states and 84594 transitions. [2022-02-10 22:30:01,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 22:30:01,420 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:30:01,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:30:01,476 INFO L225 Difference]: With dead ends: 29266 [2022-02-10 22:30:01,477 INFO L226 Difference]: Without dead ends: 29266 [2022-02-10 22:30:01,477 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=297, Invalid=963, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 22:30:01,477 INFO L934 BasicCegarLoop]: 338 mSDtfsCounter, 882 mSDsluCounter, 3091 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 3366 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:30:01,477 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [882 Valid, 3366 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:30:01,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29266 states. [2022-02-10 22:30:01,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29266 to 19863. [2022-02-10 22:30:01,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19863 states, 19862 states have (on average 2.8824388279125968) internal successors, (57251), 19862 states have internal predecessors, (57251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:01,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19863 states to 19863 states and 57251 transitions. [2022-02-10 22:30:01,844 INFO L78 Accepts]: Start accepts. Automaton has 19863 states and 57251 transitions. Word has length 177 [2022-02-10 22:30:01,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:30:01,844 INFO L470 AbstractCegarLoop]: Abstraction has 19863 states and 57251 transitions. [2022-02-10 22:30:01,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:01,844 INFO L276 IsEmpty]: Start isEmpty. Operand 19863 states and 57251 transitions. [2022-02-10 22:30:01,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:30:01,873 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:30:01,873 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:30:01,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-02-10 22:30:01,873 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:30:01,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:30:01,874 INFO L85 PathProgramCache]: Analyzing trace with hash -430066804, now seen corresponding path program 26 times [2022-02-10 22:30:01,874 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:30:01,874 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176597811] [2022-02-10 22:30:01,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:30:01,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:30:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:30:02,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:30:02,199 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:30:02,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176597811] [2022-02-10 22:30:02,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176597811] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:30:02,200 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:30:02,200 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:30:02,200 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36284158] [2022-02-10 22:30:02,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:30:02,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:30:02,200 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:30:02,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:30:02,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:30:02,200 INFO L87 Difference]: Start difference. First operand 19863 states and 57251 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:02,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:30:02,861 INFO L93 Difference]: Finished difference Result 29110 states and 84150 transitions. [2022-02-10 22:30:02,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 22:30:02,861 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:30:02,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:30:02,919 INFO L225 Difference]: With dead ends: 29110 [2022-02-10 22:30:02,919 INFO L226 Difference]: Without dead ends: 29110 [2022-02-10 22:30:02,919 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 22:30:02,919 INFO L934 BasicCegarLoop]: 336 mSDtfsCounter, 1095 mSDsluCounter, 2938 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 3220 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:30:02,920 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1095 Valid, 3220 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:30:02,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29110 states. [2022-02-10 22:30:03,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29110 to 19863. [2022-02-10 22:30:03,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19863 states, 19862 states have (on average 2.8824388279125968) internal successors, (57251), 19862 states have internal predecessors, (57251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:03,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19863 states to 19863 states and 57251 transitions. [2022-02-10 22:30:03,274 INFO L78 Accepts]: Start accepts. Automaton has 19863 states and 57251 transitions. Word has length 177 [2022-02-10 22:30:03,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:30:03,274 INFO L470 AbstractCegarLoop]: Abstraction has 19863 states and 57251 transitions. [2022-02-10 22:30:03,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:03,275 INFO L276 IsEmpty]: Start isEmpty. Operand 19863 states and 57251 transitions. [2022-02-10 22:30:03,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:30:03,301 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:30:03,302 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:30:03,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-02-10 22:30:03,302 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:30:03,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:30:03,302 INFO L85 PathProgramCache]: Analyzing trace with hash 33507938, now seen corresponding path program 16 times [2022-02-10 22:30:03,302 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:30:03,302 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294620684] [2022-02-10 22:30:03,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:30:03,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:30:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:30:03,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:30:03,614 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:30:03,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294620684] [2022-02-10 22:30:03,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294620684] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:30:03,614 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:30:03,615 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:30:03,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760897713] [2022-02-10 22:30:03,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:30:03,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:30:03,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:30:03,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:30:03,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:30:03,615 INFO L87 Difference]: Start difference. First operand 19863 states and 57251 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:04,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:30:04,293 INFO L93 Difference]: Finished difference Result 29262 states and 84584 transitions. [2022-02-10 22:30:04,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 22:30:04,293 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:30:04,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:30:04,348 INFO L225 Difference]: With dead ends: 29262 [2022-02-10 22:30:04,348 INFO L226 Difference]: Without dead ends: 29262 [2022-02-10 22:30:04,349 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=367, Invalid=1115, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:30:04,349 INFO L934 BasicCegarLoop]: 358 mSDtfsCounter, 1075 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 3309 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:30:04,349 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1075 Valid, 3309 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:30:04,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29262 states. [2022-02-10 22:30:04,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29262 to 19855. [2022-02-10 22:30:04,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19855 states, 19854 states have (on average 2.881686310063463) internal successors, (57213), 19854 states have internal predecessors, (57213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:04,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19855 states to 19855 states and 57213 transitions. [2022-02-10 22:30:04,761 INFO L78 Accepts]: Start accepts. Automaton has 19855 states and 57213 transitions. Word has length 177 [2022-02-10 22:30:04,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:30:04,761 INFO L470 AbstractCegarLoop]: Abstraction has 19855 states and 57213 transitions. [2022-02-10 22:30:04,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:04,761 INFO L276 IsEmpty]: Start isEmpty. Operand 19855 states and 57213 transitions. [2022-02-10 22:30:04,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:30:04,790 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:30:04,790 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:30:04,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-02-10 22:30:04,791 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:30:04,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:30:04,791 INFO L85 PathProgramCache]: Analyzing trace with hash -2064745658, now seen corresponding path program 27 times [2022-02-10 22:30:04,791 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:30:04,791 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651379661] [2022-02-10 22:30:04,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:30:04,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:30:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:30:05,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:30:05,101 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:30:05,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651379661] [2022-02-10 22:30:05,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651379661] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:30:05,101 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:30:05,101 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:30:05,101 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451559921] [2022-02-10 22:30:05,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:30:05,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:30:05,101 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:30:05,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:30:05,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:30:05,102 INFO L87 Difference]: Start difference. First operand 19855 states and 57213 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:05,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:30:05,840 INFO L93 Difference]: Finished difference Result 28790 states and 83110 transitions. [2022-02-10 22:30:05,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 22:30:05,840 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:30:05,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:30:05,899 INFO L225 Difference]: With dead ends: 28790 [2022-02-10 22:30:05,899 INFO L226 Difference]: Without dead ends: 28790 [2022-02-10 22:30:05,899 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=419, Invalid=1303, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 22:30:05,899 INFO L934 BasicCegarLoop]: 334 mSDtfsCounter, 1110 mSDsluCounter, 3255 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 3533 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:30:05,900 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1110 Valid, 3533 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:30:05,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28790 states. [2022-02-10 22:30:06,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28790 to 19839. [2022-02-10 22:30:06,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19839 states, 19838 states have (on average 2.8817925194071985) internal successors, (57169), 19838 states have internal predecessors, (57169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:06,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19839 states to 19839 states and 57169 transitions. [2022-02-10 22:30:06,273 INFO L78 Accepts]: Start accepts. Automaton has 19839 states and 57169 transitions. Word has length 177 [2022-02-10 22:30:06,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:30:06,273 INFO L470 AbstractCegarLoop]: Abstraction has 19839 states and 57169 transitions. [2022-02-10 22:30:06,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:06,273 INFO L276 IsEmpty]: Start isEmpty. Operand 19839 states and 57169 transitions. [2022-02-10 22:30:06,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:30:06,302 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:30:06,302 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:30:06,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-02-10 22:30:06,302 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:30:06,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:30:06,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1769863266, now seen corresponding path program 17 times [2022-02-10 22:30:06,302 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:30:06,302 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187539999] [2022-02-10 22:30:06,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:30:06,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:30:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:30:06,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:30:06,619 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:30:06,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187539999] [2022-02-10 22:30:06,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187539999] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:30:06,619 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:30:06,619 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:30:06,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637421992] [2022-02-10 22:30:06,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:30:06,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:30:06,619 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:30:06,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:30:06,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:30:06,620 INFO L87 Difference]: Start difference. First operand 19839 states and 57169 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:07,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:30:07,336 INFO L93 Difference]: Finished difference Result 28878 states and 83344 transitions. [2022-02-10 22:30:07,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 22:30:07,336 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:30:07,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:30:07,392 INFO L225 Difference]: With dead ends: 28878 [2022-02-10 22:30:07,393 INFO L226 Difference]: Without dead ends: 28878 [2022-02-10 22:30:07,393 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=411, Invalid=1229, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 22:30:07,393 INFO L934 BasicCegarLoop]: 358 mSDtfsCounter, 811 mSDsluCounter, 3020 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 3325 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:30:07,393 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 3325 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:30:07,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28878 states. [2022-02-10 22:30:07,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28878 to 19855. [2022-02-10 22:30:07,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19855 states, 19854 states have (on average 2.881686310063463) internal successors, (57213), 19854 states have internal predecessors, (57213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:07,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19855 states to 19855 states and 57213 transitions. [2022-02-10 22:30:07,734 INFO L78 Accepts]: Start accepts. Automaton has 19855 states and 57213 transitions. Word has length 177 [2022-02-10 22:30:07,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:30:07,734 INFO L470 AbstractCegarLoop]: Abstraction has 19855 states and 57213 transitions. [2022-02-10 22:30:07,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:07,735 INFO L276 IsEmpty]: Start isEmpty. Operand 19855 states and 57213 transitions. [2022-02-10 22:30:07,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:30:07,761 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:30:07,761 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:30:07,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-02-10 22:30:07,761 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:30:07,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:30:07,761 INFO L85 PathProgramCache]: Analyzing trace with hash 430740608, now seen corresponding path program 18 times [2022-02-10 22:30:07,761 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:30:07,761 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761360180] [2022-02-10 22:30:07,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:30:07,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:30:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:30:08,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:30:08,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:30:08,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761360180] [2022-02-10 22:30:08,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761360180] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:30:08,108 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:30:08,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:30:08,108 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945668724] [2022-02-10 22:30:08,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:30:08,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:30:08,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:30:08,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:30:08,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:30:08,108 INFO L87 Difference]: Start difference. First operand 19855 states and 57213 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:08,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:30:08,851 INFO L93 Difference]: Finished difference Result 28862 states and 83092 transitions. [2022-02-10 22:30:08,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 22:30:08,851 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:30:08,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:30:08,906 INFO L225 Difference]: With dead ends: 28862 [2022-02-10 22:30:08,906 INFO L226 Difference]: Without dead ends: 28862 [2022-02-10 22:30:08,907 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=430, Invalid=1292, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 22:30:08,907 INFO L934 BasicCegarLoop]: 397 mSDtfsCounter, 923 mSDsluCounter, 3071 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 3412 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:30:08,907 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [923 Valid, 3412 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:30:08,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28862 states. [2022-02-10 22:30:09,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28862 to 19809. [2022-02-10 22:30:09,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19809 states, 19808 states have (on average 2.8818154281098547) internal successors, (57083), 19808 states have internal predecessors, (57083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:09,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19809 states to 19809 states and 57083 transitions. [2022-02-10 22:30:09,253 INFO L78 Accepts]: Start accepts. Automaton has 19809 states and 57083 transitions. Word has length 177 [2022-02-10 22:30:09,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:30:09,253 INFO L470 AbstractCegarLoop]: Abstraction has 19809 states and 57083 transitions. [2022-02-10 22:30:09,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:09,253 INFO L276 IsEmpty]: Start isEmpty. Operand 19809 states and 57083 transitions. [2022-02-10 22:30:09,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:30:09,280 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:30:09,280 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:30:09,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-02-10 22:30:09,280 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:30:09,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:30:09,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2071728324, now seen corresponding path program 23 times [2022-02-10 22:30:09,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:30:09,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165552235] [2022-02-10 22:30:09,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:30:09,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:30:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:30:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:30:09,579 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:30:09,579 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165552235] [2022-02-10 22:30:09,580 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165552235] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:30:09,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641066478] [2022-02-10 22:30:09,580 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:30:09,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:30:09,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:30:09,581 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:30:09,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-10 22:30:09,722 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:30:09,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:30:09,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 22:30:09,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:30:09,749 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:30:09,768 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-02-10 22:30:09,768 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-02-10 22:30:09,936 INFO L353 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-02-10 22:30:09,937 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-02-10 22:30:10,074 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:30:10,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 22:30:10,491 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-02-10 22:30:10,491 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 21 [2022-02-10 22:30:10,592 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:30:10,672 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:30:10,746 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:30:10,997 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-02-10 22:30:10,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:30:11,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:30:11,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:30:11,362 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.offset Int) (~get2~0.base Int) (v_ArrVal_2254 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2254))) (let ((.cse1 (select .cse3 c_~get1~0.base)) (.cse0 (select .cse3 ~get2~0.base))) (or (= (select .cse0 ~get2~0.offset) (select .cse1 c_~get1~0.offset)) (not (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse1 (+ c_~get1~0.offset .cse2)) (select .cse0 (+ ~get2~0.offset .cse2))))))))) is different from false [2022-02-10 22:30:11,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-02-10 22:30:11,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641066478] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:30:11,464 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:30:11,464 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 10] total 47 [2022-02-10 22:30:11,464 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376036624] [2022-02-10 22:30:11,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:30:11,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-10 22:30:11,464 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:30:11,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-10 22:30:11,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1846, Unknown=1, NotChecked=88, Total=2162 [2022-02-10 22:30:11,465 INFO L87 Difference]: Start difference. First operand 19809 states and 57083 transitions. Second operand has 47 states, 47 states have (on average 8.127659574468085) internal successors, (382), 47 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:14,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:30:14,429 INFO L93 Difference]: Finished difference Result 30145 states and 87033 transitions. [2022-02-10 22:30:14,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-10 22:30:14,429 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 8.127659574468085) internal successors, (382), 47 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:30:14,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:30:14,488 INFO L225 Difference]: With dead ends: 30145 [2022-02-10 22:30:14,489 INFO L226 Difference]: Without dead ends: 30145 [2022-02-10 22:30:14,489 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 333 SyntacticMatches, 6 SemanticMatches, 82 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 1603 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1287, Invalid=5522, Unknown=1, NotChecked=162, Total=6972 [2022-02-10 22:30:14,490 INFO L934 BasicCegarLoop]: 370 mSDtfsCounter, 2242 mSDsluCounter, 6239 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 6454 SdHoareTripleChecker+Invalid, 2777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 864 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 22:30:14,490 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2242 Valid, 6454 Invalid, 2777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1868 Invalid, 0 Unknown, 864 Unchecked, 0.7s Time] [2022-02-10 22:30:14,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30145 states. [2022-02-10 22:30:14,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30145 to 19703. [2022-02-10 22:30:14,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19703 states, 19702 states have (on average 2.8819916759719826) internal successors, (56781), 19702 states have internal predecessors, (56781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:14,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19703 states to 19703 states and 56781 transitions. [2022-02-10 22:30:14,931 INFO L78 Accepts]: Start accepts. Automaton has 19703 states and 56781 transitions. Word has length 177 [2022-02-10 22:30:14,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:30:14,931 INFO L470 AbstractCegarLoop]: Abstraction has 19703 states and 56781 transitions. [2022-02-10 22:30:14,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 8.127659574468085) internal successors, (382), 47 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:14,931 INFO L276 IsEmpty]: Start isEmpty. Operand 19703 states and 56781 transitions. [2022-02-10 22:30:14,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:30:14,959 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:30:14,959 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:30:14,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-10 22:30:15,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:30:15,160 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:30:15,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:30:15,161 INFO L85 PathProgramCache]: Analyzing trace with hash 106754244, now seen corresponding path program 22 times [2022-02-10 22:30:15,161 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:30:15,161 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762684000] [2022-02-10 22:30:15,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:30:15,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:30:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:30:15,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:30:15,498 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:30:15,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762684000] [2022-02-10 22:30:15,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762684000] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:30:15,498 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:30:15,498 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:30:15,498 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124736620] [2022-02-10 22:30:15,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:30:15,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:30:15,499 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:30:15,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:30:15,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:30:15,499 INFO L87 Difference]: Start difference. First operand 19703 states and 56781 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:16,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:30:16,382 INFO L93 Difference]: Finished difference Result 35718 states and 102739 transitions. [2022-02-10 22:30:16,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 22:30:16,382 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:30:16,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:30:16,454 INFO L225 Difference]: With dead ends: 35718 [2022-02-10 22:30:16,455 INFO L226 Difference]: Without dead ends: 35718 [2022-02-10 22:30:16,455 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=449, Invalid=1621, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 22:30:16,455 INFO L934 BasicCegarLoop]: 428 mSDtfsCounter, 1438 mSDsluCounter, 3663 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1438 SdHoareTripleChecker+Valid, 3988 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:30:16,455 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1438 Valid, 3988 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:30:16,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35718 states. [2022-02-10 22:30:16,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35718 to 19703. [2022-02-10 22:30:16,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19703 states, 19702 states have (on average 2.8819916759719826) internal successors, (56781), 19702 states have internal predecessors, (56781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:16,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19703 states to 19703 states and 56781 transitions. [2022-02-10 22:30:16,895 INFO L78 Accepts]: Start accepts. Automaton has 19703 states and 56781 transitions. Word has length 177 [2022-02-10 22:30:16,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:30:16,895 INFO L470 AbstractCegarLoop]: Abstraction has 19703 states and 56781 transitions. [2022-02-10 22:30:16,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:16,895 INFO L276 IsEmpty]: Start isEmpty. Operand 19703 states and 56781 transitions. [2022-02-10 22:30:16,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:30:16,922 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:30:16,923 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:30:16,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-02-10 22:30:16,923 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:30:16,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:30:16,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1999415984, now seen corresponding path program 24 times [2022-02-10 22:30:16,923 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:30:16,923 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606843406] [2022-02-10 22:30:16,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:30:16,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:30:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:30:17,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:30:17,268 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:30:17,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606843406] [2022-02-10 22:30:17,268 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606843406] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:30:17,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133975102] [2022-02-10 22:30:17,268 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:30:17,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:30:17,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:30:17,270 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:30:17,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-10 22:30:17,416 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 22:30:17,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:30:17,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 22:30:17,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:30:17,441 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:30:17,486 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 22:30:17,486 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 22:30:17,743 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 22:30:17,921 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-02-10 22:30:17,922 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:30:17,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:30:17,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:30:18,149 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2304 (Array Int Int)) (~get2~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2304))) (let ((.cse0 (select .cse1 ~get2~0.base))) (or (not (= |c_thread1Thread1of1ForFork0_#t~mem2| (select .cse0 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))))) (= (select .cse0 c_~get2~0.offset) (select (select .cse1 c_~get1~0.base) c_~get1~0.offset)))))) is different from false [2022-02-10 22:30:18,193 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-02-10 22:30:18,193 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 114 treesize of output 131 [2022-02-10 22:30:18,207 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:30:18,207 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 92 [2022-02-10 22:30:19,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:30:19,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133975102] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:30:19,104 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:30:19,104 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 39 [2022-02-10 22:30:19,104 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703682060] [2022-02-10 22:30:19,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:30:19,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 22:30:19,104 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:30:19,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 22:30:19,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1280, Unknown=1, NotChecked=72, Total=1482 [2022-02-10 22:30:19,105 INFO L87 Difference]: Start difference. First operand 19703 states and 56781 transitions. Second operand has 39 states, 39 states have (on average 7.9743589743589745) internal successors, (311), 39 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:21,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:30:21,058 INFO L93 Difference]: Finished difference Result 37783 states and 109204 transitions. [2022-02-10 22:30:21,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-10 22:30:21,059 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.9743589743589745) internal successors, (311), 39 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:30:21,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:30:21,135 INFO L225 Difference]: With dead ends: 37783 [2022-02-10 22:30:21,135 INFO L226 Difference]: Without dead ends: 37783 [2022-02-10 22:30:21,136 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 339 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1108 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1199, Invalid=4965, Unknown=2, NotChecked=154, Total=6320 [2022-02-10 22:30:21,136 INFO L934 BasicCegarLoop]: 467 mSDtfsCounter, 2735 mSDsluCounter, 7662 mSDsCounter, 0 mSdLazyCounter, 2068 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 7939 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 702 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 22:30:21,136 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 7939 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2068 Invalid, 0 Unknown, 702 Unchecked, 0.7s Time] [2022-02-10 22:30:21,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37783 states. [2022-02-10 22:30:21,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37783 to 18879. [2022-02-10 22:30:21,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18879 states, 18878 states have (on average 2.8867994490941835) internal successors, (54497), 18878 states have internal predecessors, (54497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:21,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18879 states to 18879 states and 54497 transitions. [2022-02-10 22:30:21,563 INFO L78 Accepts]: Start accepts. Automaton has 18879 states and 54497 transitions. Word has length 177 [2022-02-10 22:30:21,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:30:21,563 INFO L470 AbstractCegarLoop]: Abstraction has 18879 states and 54497 transitions. [2022-02-10 22:30:21,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.9743589743589745) internal successors, (311), 39 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:21,563 INFO L276 IsEmpty]: Start isEmpty. Operand 18879 states and 54497 transitions. [2022-02-10 22:30:21,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:30:21,588 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:30:21,588 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:30:21,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-02-10 22:30:21,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-02-10 22:30:21,789 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:30:21,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:30:21,789 INFO L85 PathProgramCache]: Analyzing trace with hash -480864666, now seen corresponding path program 23 times [2022-02-10 22:30:21,789 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:30:21,789 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744475265] [2022-02-10 22:30:21,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:30:21,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:30:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:30:22,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:30:22,184 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:30:22,184 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744475265] [2022-02-10 22:30:22,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744475265] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:30:22,184 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:30:22,184 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-10 22:30:22,184 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400775557] [2022-02-10 22:30:22,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:30:22,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:30:22,184 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:30:22,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:30:22,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:30:22,185 INFO L87 Difference]: Start difference. First operand 18879 states and 54497 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:23,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:30:23,259 INFO L93 Difference]: Finished difference Result 32441 states and 93597 transitions. [2022-02-10 22:30:23,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-10 22:30:23,259 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:30:23,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:30:23,323 INFO L225 Difference]: With dead ends: 32441 [2022-02-10 22:30:23,323 INFO L226 Difference]: Without dead ends: 32441 [2022-02-10 22:30:23,324 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=561, Invalid=1989, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 22:30:23,324 INFO L934 BasicCegarLoop]: 414 mSDtfsCounter, 1424 mSDsluCounter, 3976 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 4285 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:30:23,324 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1424 Valid, 4285 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:30:23,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32441 states. [2022-02-10 22:30:23,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32441 to 18879. [2022-02-10 22:30:23,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18879 states, 18878 states have (on average 2.8867994490941835) internal successors, (54497), 18878 states have internal predecessors, (54497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:23,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18879 states to 18879 states and 54497 transitions. [2022-02-10 22:30:23,721 INFO L78 Accepts]: Start accepts. Automaton has 18879 states and 54497 transitions. Word has length 177 [2022-02-10 22:30:23,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:30:23,722 INFO L470 AbstractCegarLoop]: Abstraction has 18879 states and 54497 transitions. [2022-02-10 22:30:23,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:23,722 INFO L276 IsEmpty]: Start isEmpty. Operand 18879 states and 54497 transitions. [2022-02-10 22:30:23,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:30:23,748 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:30:23,748 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:30:23,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-02-10 22:30:23,748 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:30:23,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:30:23,748 INFO L85 PathProgramCache]: Analyzing trace with hash -643153592, now seen corresponding path program 24 times [2022-02-10 22:30:23,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:30:23,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636787293] [2022-02-10 22:30:23,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:30:23,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:30:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:30:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:30:24,200 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:30:24,200 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636787293] [2022-02-10 22:30:24,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636787293] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:30:24,200 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:30:24,201 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-10 22:30:24,201 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032388174] [2022-02-10 22:30:24,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:30:24,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:30:24,201 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:30:24,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:30:24,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:30:24,201 INFO L87 Difference]: Start difference. First operand 18879 states and 54497 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:25,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:30:25,128 INFO L93 Difference]: Finished difference Result 28780 states and 83328 transitions. [2022-02-10 22:30:25,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-10 22:30:25,129 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:30:25,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:30:25,187 INFO L225 Difference]: With dead ends: 28780 [2022-02-10 22:30:25,188 INFO L226 Difference]: Without dead ends: 28780 [2022-02-10 22:30:25,188 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=479, Invalid=1777, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 22:30:25,188 INFO L934 BasicCegarLoop]: 379 mSDtfsCounter, 1214 mSDsluCounter, 3410 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 3703 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:30:25,188 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1214 Valid, 3703 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:30:25,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28780 states. [2022-02-10 22:30:25,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28780 to 18879. [2022-02-10 22:30:25,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18879 states, 18878 states have (on average 2.8867994490941835) internal successors, (54497), 18878 states have internal predecessors, (54497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:25,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18879 states to 18879 states and 54497 transitions. [2022-02-10 22:30:25,545 INFO L78 Accepts]: Start accepts. Automaton has 18879 states and 54497 transitions. Word has length 177 [2022-02-10 22:30:25,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:30:25,546 INFO L470 AbstractCegarLoop]: Abstraction has 18879 states and 54497 transitions. [2022-02-10 22:30:25,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:25,546 INFO L276 IsEmpty]: Start isEmpty. Operand 18879 states and 54497 transitions. [2022-02-10 22:30:25,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:30:25,571 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:30:25,571 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:30:25,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-02-10 22:30:25,572 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:30:25,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:30:25,572 INFO L85 PathProgramCache]: Analyzing trace with hash -289971380, now seen corresponding path program 25 times [2022-02-10 22:30:25,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:30:25,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120297909] [2022-02-10 22:30:25,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:30:25,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:30:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:30:25,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:30:25,988 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:30:25,988 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120297909] [2022-02-10 22:30:25,988 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120297909] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:30:25,988 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:30:25,988 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:30:25,988 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468839121] [2022-02-10 22:30:25,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:30:25,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:30:25,989 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:30:25,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:30:25,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:30:25,989 INFO L87 Difference]: Start difference. First operand 18879 states and 54497 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:26,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:30:26,869 INFO L93 Difference]: Finished difference Result 28240 states and 81712 transitions. [2022-02-10 22:30:26,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-10 22:30:26,869 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:30:26,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:30:26,927 INFO L225 Difference]: With dead ends: 28240 [2022-02-10 22:30:26,927 INFO L226 Difference]: Without dead ends: 28240 [2022-02-10 22:30:26,928 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=473, Invalid=1689, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 22:30:26,928 INFO L934 BasicCegarLoop]: 365 mSDtfsCounter, 1166 mSDsluCounter, 3155 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 3442 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:30:26,928 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1166 Valid, 3442 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:30:26,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28240 states. [2022-02-10 22:30:27,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28240 to 18911. [2022-02-10 22:30:27,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18911 states, 18910 states have (on average 2.886567953463776) internal successors, (54585), 18910 states have internal predecessors, (54585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:27,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18911 states to 18911 states and 54585 transitions. [2022-02-10 22:30:27,281 INFO L78 Accepts]: Start accepts. Automaton has 18911 states and 54585 transitions. Word has length 177 [2022-02-10 22:30:27,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:30:27,281 INFO L470 AbstractCegarLoop]: Abstraction has 18911 states and 54585 transitions. [2022-02-10 22:30:27,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:27,281 INFO L276 IsEmpty]: Start isEmpty. Operand 18911 states and 54585 transitions. [2022-02-10 22:30:27,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:30:27,308 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:30:27,308 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:30:27,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-02-10 22:30:27,308 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:30:27,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:30:27,308 INFO L85 PathProgramCache]: Analyzing trace with hash 2074868600, now seen corresponding path program 26 times [2022-02-10 22:30:27,308 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:30:27,308 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315485514] [2022-02-10 22:30:27,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:30:27,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:30:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:30:27,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:30:27,687 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:30:27,687 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315485514] [2022-02-10 22:30:27,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315485514] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:30:27,687 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797399936] [2022-02-10 22:30:27,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:30:27,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:30:27,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:30:27,688 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:30:27,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-10 22:30:27,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:30:27,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:30:27,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 51 conjunts are in the unsatisfiable core [2022-02-10 22:30:27,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:30:27,862 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:30:27,914 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 22:30:27,914 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 22:30:28,183 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 22:30:28,387 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-02-10 22:30:28,388 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:30:28,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:30:28,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:30:28,628 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_2386 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2386))) (let ((.cse0 (select .cse1 ~get2~0.base))) (or (= (select .cse0 c_~get2~0.offset) (select (select .cse1 c_~get1~0.base) c_~get1~0.offset)) (not (= (select .cse0 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))) |c_thread1Thread1of1ForFork0_#t~mem2|)))))) is different from false [2022-02-10 22:30:28,664 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-02-10 22:30:28,664 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 114 treesize of output 131 [2022-02-10 22:30:28,678 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:30:28,678 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 92 [2022-02-10 22:30:29,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:30:29,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797399936] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:30:29,491 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:30:29,491 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 40 [2022-02-10 22:30:29,491 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664550270] [2022-02-10 22:30:29,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:30:29,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 22:30:29,491 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:30:29,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 22:30:29,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1349, Unknown=1, NotChecked=74, Total=1560 [2022-02-10 22:30:29,492 INFO L87 Difference]: Start difference. First operand 18911 states and 54585 transitions. Second operand has 40 states, 40 states have (on average 7.9) internal successors, (316), 40 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:31,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:30:31,901 INFO L93 Difference]: Finished difference Result 32206 states and 93168 transitions. [2022-02-10 22:30:31,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-10 22:30:31,901 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 7.9) internal successors, (316), 40 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:30:31,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:30:31,971 INFO L225 Difference]: With dead ends: 32206 [2022-02-10 22:30:31,971 INFO L226 Difference]: Without dead ends: 32206 [2022-02-10 22:30:31,973 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 1782 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1687, Invalid=6688, Unknown=1, NotChecked=180, Total=8556 [2022-02-10 22:30:31,973 INFO L934 BasicCegarLoop]: 453 mSDtfsCounter, 2277 mSDsluCounter, 5727 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2277 SdHoareTripleChecker+Valid, 6042 SdHoareTripleChecker+Invalid, 2514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 685 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:30:31,973 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2277 Valid, 6042 Invalid, 2514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1799 Invalid, 0 Unknown, 685 Unchecked, 0.6s Time] [2022-02-10 22:30:32,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32206 states. [2022-02-10 22:30:32,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32206 to 18879. [2022-02-10 22:30:32,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18879 states, 18878 states have (on average 2.8867994490941835) internal successors, (54497), 18878 states have internal predecessors, (54497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:32,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18879 states to 18879 states and 54497 transitions. [2022-02-10 22:30:32,380 INFO L78 Accepts]: Start accepts. Automaton has 18879 states and 54497 transitions. Word has length 177 [2022-02-10 22:30:32,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:30:32,381 INFO L470 AbstractCegarLoop]: Abstraction has 18879 states and 54497 transitions. [2022-02-10 22:30:32,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 7.9) internal successors, (316), 40 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:32,381 INFO L276 IsEmpty]: Start isEmpty. Operand 18879 states and 54497 transitions. [2022-02-10 22:30:32,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:30:32,408 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:30:32,408 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:30:32,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-10 22:30:32,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2022-02-10 22:30:32,609 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:30:32,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:30:32,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1955471522, now seen corresponding path program 25 times [2022-02-10 22:30:32,610 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:30:32,610 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312602817] [2022-02-10 22:30:32,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:30:32,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:30:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:30:33,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:30:33,009 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:30:33,009 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312602817] [2022-02-10 22:30:33,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312602817] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:30:33,010 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:30:33,010 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-10 22:30:33,010 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431013094] [2022-02-10 22:30:33,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:30:33,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:30:33,011 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:30:33,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:30:33,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:30:33,011 INFO L87 Difference]: Start difference. First operand 18879 states and 54497 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:33,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:30:33,835 INFO L93 Difference]: Finished difference Result 28014 states and 81046 transitions. [2022-02-10 22:30:33,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 22:30:33,836 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:30:33,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:30:33,893 INFO L225 Difference]: With dead ends: 28014 [2022-02-10 22:30:33,893 INFO L226 Difference]: Without dead ends: 28014 [2022-02-10 22:30:33,893 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=403, Invalid=1577, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 22:30:33,893 INFO L934 BasicCegarLoop]: 364 mSDtfsCounter, 1295 mSDsluCounter, 2747 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:30:33,894 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1295 Valid, 3038 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:30:33,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28014 states. [2022-02-10 22:30:34,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28014 to 18879. [2022-02-10 22:30:34,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18879 states, 18878 states have (on average 2.886375675389342) internal successors, (54489), 18878 states have internal predecessors, (54489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:34,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18879 states to 18879 states and 54489 transitions. [2022-02-10 22:30:34,383 INFO L78 Accepts]: Start accepts. Automaton has 18879 states and 54489 transitions. Word has length 177 [2022-02-10 22:30:34,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:30:34,383 INFO L470 AbstractCegarLoop]: Abstraction has 18879 states and 54489 transitions. [2022-02-10 22:30:34,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:34,383 INFO L276 IsEmpty]: Start isEmpty. Operand 18879 states and 54489 transitions. [2022-02-10 22:30:34,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:30:34,407 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:30:34,407 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:30:34,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-02-10 22:30:34,407 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:30:34,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:30:34,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1767591432, now seen corresponding path program 27 times [2022-02-10 22:30:34,408 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:30:34,408 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805363872] [2022-02-10 22:30:34,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:30:34,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:30:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:30:34,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:30:34,809 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:30:34,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805363872] [2022-02-10 22:30:34,809 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805363872] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:30:34,809 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:30:34,809 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:30:34,809 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440314818] [2022-02-10 22:30:34,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:30:34,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:30:34,809 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:30:34,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:30:34,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:30:34,810 INFO L87 Difference]: Start difference. First operand 18879 states and 54489 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:35,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:30:35,610 INFO L93 Difference]: Finished difference Result 27906 states and 80742 transitions. [2022-02-10 22:30:35,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 22:30:35,610 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:30:35,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:30:35,667 INFO L225 Difference]: With dead ends: 27906 [2022-02-10 22:30:35,667 INFO L226 Difference]: Without dead ends: 27906 [2022-02-10 22:30:35,667 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=399, Invalid=1493, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 22:30:35,667 INFO L934 BasicCegarLoop]: 358 mSDtfsCounter, 1129 mSDsluCounter, 3165 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 3455 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:30:35,668 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1129 Valid, 3455 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:30:35,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27906 states. [2022-02-10 22:30:35,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27906 to 18887. [2022-02-10 22:30:35,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18887 states, 18886 states have (on average 2.886317907444668) internal successors, (54511), 18886 states have internal predecessors, (54511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18887 states to 18887 states and 54511 transitions. [2022-02-10 22:30:36,015 INFO L78 Accepts]: Start accepts. Automaton has 18887 states and 54511 transitions. Word has length 177 [2022-02-10 22:30:36,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:30:36,015 INFO L470 AbstractCegarLoop]: Abstraction has 18887 states and 54511 transitions. [2022-02-10 22:30:36,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:36,015 INFO L276 IsEmpty]: Start isEmpty. Operand 18887 states and 54511 transitions. [2022-02-10 22:30:36,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:30:36,042 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:30:36,042 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:30:36,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-02-10 22:30:36,043 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:30:36,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:30:36,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1131634966, now seen corresponding path program 28 times [2022-02-10 22:30:36,043 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:30:36,043 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991042082] [2022-02-10 22:30:36,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:30:36,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:30:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:30:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:30:36,450 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:30:36,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991042082] [2022-02-10 22:30:36,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991042082] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:30:36,450 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:30:36,450 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-10 22:30:36,450 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156102923] [2022-02-10 22:30:36,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:30:36,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:30:36,450 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:30:36,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:30:36,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:30:36,450 INFO L87 Difference]: Start difference. First operand 18887 states and 54511 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:37,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:30:37,328 INFO L93 Difference]: Finished difference Result 27136 states and 78446 transitions. [2022-02-10 22:30:37,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-10 22:30:37,329 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:30:37,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:30:37,383 INFO L225 Difference]: With dead ends: 27136 [2022-02-10 22:30:37,383 INFO L226 Difference]: Without dead ends: 27136 [2022-02-10 22:30:37,383 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=497, Invalid=1759, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 22:30:37,384 INFO L934 BasicCegarLoop]: 341 mSDtfsCounter, 1355 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:30:37,384 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1355 Valid, 3103 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:30:37,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27136 states. [2022-02-10 22:30:37,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27136 to 18863. [2022-02-10 22:30:37,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18863 states, 18862 states have (on average 2.8856430919308664) internal successors, (54429), 18862 states have internal predecessors, (54429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:37,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18863 states to 18863 states and 54429 transitions. [2022-02-10 22:30:37,734 INFO L78 Accepts]: Start accepts. Automaton has 18863 states and 54429 transitions. Word has length 177 [2022-02-10 22:30:37,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:30:37,735 INFO L470 AbstractCegarLoop]: Abstraction has 18863 states and 54429 transitions. [2022-02-10 22:30:37,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:37,735 INFO L276 IsEmpty]: Start isEmpty. Operand 18863 states and 54429 transitions. [2022-02-10 22:30:37,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:30:37,763 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:30:37,763 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:30:37,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-02-10 22:30:37,763 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:30:37,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:30:37,763 INFO L85 PathProgramCache]: Analyzing trace with hash -668060224, now seen corresponding path program 19 times [2022-02-10 22:30:37,763 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:30:37,763 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663306231] [2022-02-10 22:30:37,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:30:37,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:30:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:30:38,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:30:38,172 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:30:38,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663306231] [2022-02-10 22:30:38,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663306231] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:30:38,172 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:30:38,172 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:30:38,172 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527607610] [2022-02-10 22:30:38,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:30:38,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:30:38,172 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:30:38,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:30:38,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:30:38,172 INFO L87 Difference]: Start difference. First operand 18863 states and 54429 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:39,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:30:39,130 INFO L93 Difference]: Finished difference Result 27408 states and 79210 transitions. [2022-02-10 22:30:39,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-10 22:30:39,131 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:30:39,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:30:39,186 INFO L225 Difference]: With dead ends: 27408 [2022-02-10 22:30:39,186 INFO L226 Difference]: Without dead ends: 27408 [2022-02-10 22:30:39,186 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=491, Invalid=1671, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 22:30:39,186 INFO L934 BasicCegarLoop]: 385 mSDtfsCounter, 1175 mSDsluCounter, 3672 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 3985 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:30:39,186 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 3985 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:30:39,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27408 states. [2022-02-10 22:30:39,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27408 to 18839. [2022-02-10 22:30:39,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18839 states, 18838 states have (on average 2.8845418834271155) internal successors, (54339), 18838 states have internal predecessors, (54339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:39,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18839 states to 18839 states and 54339 transitions. [2022-02-10 22:30:39,533 INFO L78 Accepts]: Start accepts. Automaton has 18839 states and 54339 transitions. Word has length 177 [2022-02-10 22:30:39,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:30:39,533 INFO L470 AbstractCegarLoop]: Abstraction has 18839 states and 54339 transitions. [2022-02-10 22:30:39,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:30:39,534 INFO L276 IsEmpty]: Start isEmpty. Operand 18839 states and 54339 transitions. [2022-02-10 22:30:39,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:30:39,560 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:30:39,560 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:30:39,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-02-10 22:30:39,560 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:30:39,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:30:39,561 INFO L85 PathProgramCache]: Analyzing trace with hash 888244774, now seen corresponding path program 28 times [2022-02-10 22:30:39,561 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:30:39,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423118917] [2022-02-10 22:30:39,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:30:39,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:30:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:30:39,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:30:39,910 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:30:39,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423118917] [2022-02-10 22:30:39,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423118917] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:30:39,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422294219] [2022-02-10 22:30:39,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:30:39,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:30:39,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:30:39,911 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:30:39,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-10 22:30:40,056 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:30:40,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:30:40,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 56 conjunts are in the unsatisfiable core [2022-02-10 22:30:40,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:30:40,657 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:30:40,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:30:41,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 22:30:41,007 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 22:30:41,225 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-02-10 22:30:41,226 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:30:41,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:30:41,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:30:41,914 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:30:41,915 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 57 [2022-02-10 22:30:41,923 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-02-10 22:30:41,923 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 868 treesize of output 756 [2022-02-10 22:30:41,934 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:30:41,934 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 756 treesize of output 708 [2022-02-10 22:30:41,943 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:30:41,943 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 700 treesize of output 628 [2022-02-10 22:31:21,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:31:21,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422294219] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:31:21,836 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:31:21,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24, 21] total 62 [2022-02-10 22:31:21,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559887240] [2022-02-10 22:31:21,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:31:21,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-02-10 22:31:21,837 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:31:21,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-02-10 22:31:21,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=3324, Unknown=115, NotChecked=0, Total=3782 [2022-02-10 22:31:21,837 INFO L87 Difference]: Start difference. First operand 18839 states and 54339 transitions. Second operand has 62 states, 62 states have (on average 6.645161290322581) internal successors, (412), 62 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:31:28,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:31:28,797 INFO L93 Difference]: Finished difference Result 53002 states and 152756 transitions. [2022-02-10 22:31:28,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-10 22:31:28,797 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 6.645161290322581) internal successors, (412), 62 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:31:28,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:31:28,922 INFO L225 Difference]: With dead ends: 53002 [2022-02-10 22:31:28,922 INFO L226 Difference]: Without dead ends: 53002 [2022-02-10 22:31:28,924 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 318 SyntacticMatches, 13 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4143 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=3229, Invalid=12912, Unknown=115, NotChecked=0, Total=16256 [2022-02-10 22:31:28,924 INFO L934 BasicCegarLoop]: 482 mSDtfsCounter, 4609 mSDsluCounter, 10573 mSDsCounter, 0 mSdLazyCounter, 3043 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4609 SdHoareTripleChecker+Valid, 10734 SdHoareTripleChecker+Invalid, 3585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 513 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:31:28,924 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [4609 Valid, 10734 Invalid, 3585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3043 Invalid, 0 Unknown, 513 Unchecked, 1.2s Time] [2022-02-10 22:31:28,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53002 states. [2022-02-10 22:31:29,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53002 to 16969. [2022-02-10 22:31:29,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16969 states, 16968 states have (on average 2.8735855728429986) internal successors, (48759), 16968 states have internal predecessors, (48759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:31:29,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16969 states to 16969 states and 48759 transitions. [2022-02-10 22:31:29,480 INFO L78 Accepts]: Start accepts. Automaton has 16969 states and 48759 transitions. Word has length 177 [2022-02-10 22:31:29,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:31:29,480 INFO L470 AbstractCegarLoop]: Abstraction has 16969 states and 48759 transitions. [2022-02-10 22:31:29,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 6.645161290322581) internal successors, (412), 62 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:31:29,480 INFO L276 IsEmpty]: Start isEmpty. Operand 16969 states and 48759 transitions. [2022-02-10 22:31:29,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:31:29,504 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:31:29,504 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:31:29,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-02-10 22:31:29,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:31:29,711 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:31:29,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:31:29,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1276711498, now seen corresponding path program 26 times [2022-02-10 22:31:29,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:31:29,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162659467] [2022-02-10 22:31:29,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:31:29,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:31:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:31:30,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:31:30,240 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:31:30,240 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162659467] [2022-02-10 22:31:30,240 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162659467] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:31:30,240 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:31:30,240 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-10 22:31:30,240 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634993549] [2022-02-10 22:31:30,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:31:30,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:31:30,240 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:31:30,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:31:30,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:31:30,241 INFO L87 Difference]: Start difference. First operand 16969 states and 48759 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:31:31,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:31:31,307 INFO L93 Difference]: Finished difference Result 30593 states and 87833 transitions. [2022-02-10 22:31:31,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-10 22:31:31,307 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:31:31,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:31:31,371 INFO L225 Difference]: With dead ends: 30593 [2022-02-10 22:31:31,371 INFO L226 Difference]: Without dead ends: 30593 [2022-02-10 22:31:31,371 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=590, Invalid=2062, Unknown=0, NotChecked=0, Total=2652 [2022-02-10 22:31:31,372 INFO L934 BasicCegarLoop]: 406 mSDtfsCounter, 1436 mSDsluCounter, 3774 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 4088 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:31:31,372 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1436 Valid, 4088 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:31:31,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30593 states. [2022-02-10 22:31:31,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30593 to 16969. [2022-02-10 22:31:31,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16969 states, 16968 states have (on average 2.8735855728429986) internal successors, (48759), 16968 states have internal predecessors, (48759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:31:31,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16969 states to 16969 states and 48759 transitions. [2022-02-10 22:31:31,740 INFO L78 Accepts]: Start accepts. Automaton has 16969 states and 48759 transitions. Word has length 177 [2022-02-10 22:31:31,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:31:31,741 INFO L470 AbstractCegarLoop]: Abstraction has 16969 states and 48759 transitions. [2022-02-10 22:31:31,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:31:31,741 INFO L276 IsEmpty]: Start isEmpty. Operand 16969 states and 48759 transitions. [2022-02-10 22:31:31,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:31:31,764 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:31:31,764 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:31:31,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-02-10 22:31:31,765 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:31:31,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:31:31,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1439000424, now seen corresponding path program 27 times [2022-02-10 22:31:31,765 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:31:31,765 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186536417] [2022-02-10 22:31:31,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:31:31,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:31:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:31:32,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:31:32,354 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:31:32,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186536417] [2022-02-10 22:31:32,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186536417] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:31:32,354 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:31:32,354 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-10 22:31:32,354 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496695710] [2022-02-10 22:31:32,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:31:32,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:31:32,354 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:31:32,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:31:32,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:31:32,354 INFO L87 Difference]: Start difference. First operand 16969 states and 48759 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:31:33,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:31:33,235 INFO L93 Difference]: Finished difference Result 27252 states and 78532 transitions. [2022-02-10 22:31:33,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-10 22:31:33,235 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:31:33,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:31:33,288 INFO L225 Difference]: With dead ends: 27252 [2022-02-10 22:31:33,288 INFO L226 Difference]: Without dead ends: 27252 [2022-02-10 22:31:33,288 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=539, Invalid=1911, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 22:31:33,289 INFO L934 BasicCegarLoop]: 352 mSDtfsCounter, 1366 mSDsluCounter, 2612 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 2903 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:31:33,289 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1366 Valid, 2903 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:31:33,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27252 states. [2022-02-10 22:31:33,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27252 to 16977. [2022-02-10 22:31:33,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16977 states, 16976 states have (on average 2.873998586239397) internal successors, (48789), 16976 states have internal predecessors, (48789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:31:33,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16977 states to 16977 states and 48789 transitions. [2022-02-10 22:31:33,606 INFO L78 Accepts]: Start accepts. Automaton has 16977 states and 48789 transitions. Word has length 177 [2022-02-10 22:31:33,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:31:33,606 INFO L470 AbstractCegarLoop]: Abstraction has 16977 states and 48789 transitions. [2022-02-10 22:31:33,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:31:33,606 INFO L276 IsEmpty]: Start isEmpty. Operand 16977 states and 48789 transitions. [2022-02-10 22:31:33,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:31:33,629 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:31:33,629 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:31:33,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-02-10 22:31:33,629 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:31:33,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:31:33,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1159624690, now seen corresponding path program 28 times [2022-02-10 22:31:33,629 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:31:33,629 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168804283] [2022-02-10 22:31:33,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:31:33,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:31:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:31:34,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:31:34,068 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:31:34,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168804283] [2022-02-10 22:31:34,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168804283] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:31:34,068 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:31:34,068 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-10 22:31:34,069 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602166825] [2022-02-10 22:31:34,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:31:34,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:31:34,069 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:31:34,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:31:34,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:31:34,069 INFO L87 Difference]: Start difference. First operand 16977 states and 48789 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:31:34,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:31:34,889 INFO L93 Difference]: Finished difference Result 26518 states and 76338 transitions. [2022-02-10 22:31:34,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 22:31:34,889 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:31:34,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:31:34,941 INFO L225 Difference]: With dead ends: 26518 [2022-02-10 22:31:34,942 INFO L226 Difference]: Without dead ends: 26518 [2022-02-10 22:31:34,942 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=461, Invalid=1701, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 22:31:34,942 INFO L934 BasicCegarLoop]: 356 mSDtfsCounter, 1251 mSDsluCounter, 2852 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:31:34,942 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1251 Valid, 3137 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:31:34,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26518 states. [2022-02-10 22:31:35,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26518 to 16993. [2022-02-10 22:31:35,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16993 states, 16992 states have (on average 2.874823446327684) internal successors, (48849), 16992 states have internal predecessors, (48849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:31:35,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16993 states to 16993 states and 48849 transitions. [2022-02-10 22:31:35,263 INFO L78 Accepts]: Start accepts. Automaton has 16993 states and 48849 transitions. Word has length 177 [2022-02-10 22:31:35,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:31:35,263 INFO L470 AbstractCegarLoop]: Abstraction has 16993 states and 48849 transitions. [2022-02-10 22:31:35,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:31:35,263 INFO L276 IsEmpty]: Start isEmpty. Operand 16993 states and 48849 transitions. [2022-02-10 22:31:35,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:31:35,286 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:31:35,286 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:31:35,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-02-10 22:31:35,287 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:31:35,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:31:35,287 INFO L85 PathProgramCache]: Analyzing trace with hash 971744600, now seen corresponding path program 29 times [2022-02-10 22:31:35,287 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:31:35,287 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761685581] [2022-02-10 22:31:35,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:31:35,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:31:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:31:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:31:35,675 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:31:35,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761685581] [2022-02-10 22:31:35,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761685581] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:31:35,675 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:31:35,675 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:31:35,675 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737676375] [2022-02-10 22:31:35,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:31:35,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:31:35,675 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:31:35,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:31:35,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:31:35,676 INFO L87 Difference]: Start difference. First operand 16993 states and 48849 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:31:36,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:31:36,543 INFO L93 Difference]: Finished difference Result 26338 states and 75836 transitions. [2022-02-10 22:31:36,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 22:31:36,543 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:31:36,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:31:36,664 INFO L225 Difference]: With dead ends: 26338 [2022-02-10 22:31:36,664 INFO L226 Difference]: Without dead ends: 26338 [2022-02-10 22:31:36,664 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=455, Invalid=1615, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 22:31:36,664 INFO L934 BasicCegarLoop]: 355 mSDtfsCounter, 1149 mSDsluCounter, 3203 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 3480 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:31:36,664 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 3480 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:31:36,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26338 states. [2022-02-10 22:31:36,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26338 to 17001. [2022-02-10 22:31:36,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17001 states, 17000 states have (on average 2.874764705882353) internal successors, (48871), 17000 states have internal predecessors, (48871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:31:36,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17001 states to 17001 states and 48871 transitions. [2022-02-10 22:31:36,929 INFO L78 Accepts]: Start accepts. Automaton has 17001 states and 48871 transitions. Word has length 177 [2022-02-10 22:31:36,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:31:36,929 INFO L470 AbstractCegarLoop]: Abstraction has 17001 states and 48871 transitions. [2022-02-10 22:31:36,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:31:36,929 INFO L276 IsEmpty]: Start isEmpty. Operand 17001 states and 48871 transitions. [2022-02-10 22:31:36,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:31:36,952 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:31:36,952 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:31:36,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-02-10 22:31:36,952 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:31:36,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:31:36,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1927481798, now seen corresponding path program 29 times [2022-02-10 22:31:36,953 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:31:36,953 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99719329] [2022-02-10 22:31:36,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:31:36,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:31:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:31:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:31:37,339 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:31:37,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99719329] [2022-02-10 22:31:37,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99719329] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:31:37,339 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:31:37,339 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-10 22:31:37,339 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389542470] [2022-02-10 22:31:37,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:31:37,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:31:37,339 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:31:37,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:31:37,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:31:37,340 INFO L87 Difference]: Start difference. First operand 17001 states and 48871 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:31:38,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:31:38,182 INFO L93 Difference]: Finished difference Result 25714 states and 74082 transitions. [2022-02-10 22:31:38,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 22:31:38,182 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:31:38,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:31:38,233 INFO L225 Difference]: With dead ends: 25714 [2022-02-10 22:31:38,233 INFO L226 Difference]: Without dead ends: 25714 [2022-02-10 22:31:38,233 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=474, Invalid=1688, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 22:31:38,234 INFO L934 BasicCegarLoop]: 333 mSDtfsCounter, 1254 mSDsluCounter, 2918 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:31:38,234 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1254 Valid, 3202 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:31:38,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25714 states. [2022-02-10 22:31:38,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25714 to 16993. [2022-02-10 22:31:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16993 states, 16992 states have (on average 2.874823446327684) internal successors, (48849), 16992 states have internal predecessors, (48849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:31:38,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16993 states to 16993 states and 48849 transitions. [2022-02-10 22:31:38,647 INFO L78 Accepts]: Start accepts. Automaton has 16993 states and 48849 transitions. Word has length 177 [2022-02-10 22:31:38,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:31:38,647 INFO L470 AbstractCegarLoop]: Abstraction has 16993 states and 48849 transitions. [2022-02-10 22:31:38,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:31:38,647 INFO L276 IsEmpty]: Start isEmpty. Operand 16993 states and 48849 transitions. [2022-02-10 22:31:38,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:31:38,668 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:31:38,668 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:31:38,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-02-10 22:31:38,668 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:31:38,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:31:38,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1463907056, now seen corresponding path program 20 times [2022-02-10 22:31:38,669 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:31:38,669 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778661099] [2022-02-10 22:31:38,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:31:38,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:31:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:31:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:31:39,138 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:31:39,138 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778661099] [2022-02-10 22:31:39,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778661099] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:31:39,138 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:31:39,138 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:31:39,138 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242612906] [2022-02-10 22:31:39,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:31:39,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:31:39,138 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:31:39,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:31:39,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:31:39,139 INFO L87 Difference]: Start difference. First operand 16993 states and 48849 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:31:39,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:31:39,934 INFO L93 Difference]: Finished difference Result 25930 states and 74708 transitions. [2022-02-10 22:31:39,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 22:31:39,934 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:31:39,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:31:39,987 INFO L225 Difference]: With dead ends: 25930 [2022-02-10 22:31:39,987 INFO L226 Difference]: Without dead ends: 25930 [2022-02-10 22:31:39,987 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=468, Invalid=1602, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 22:31:39,987 INFO L934 BasicCegarLoop]: 366 mSDtfsCounter, 1124 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 3217 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:31:39,987 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1124 Valid, 3217 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:31:40,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25930 states. [2022-02-10 22:31:40,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25930 to 16969. [2022-02-10 22:31:40,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16969 states, 16968 states have (on average 2.8735855728429986) internal successors, (48759), 16968 states have internal predecessors, (48759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:31:40,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16969 states to 16969 states and 48759 transitions. [2022-02-10 22:31:40,297 INFO L78 Accepts]: Start accepts. Automaton has 16969 states and 48759 transitions. Word has length 177 [2022-02-10 22:31:40,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:31:40,297 INFO L470 AbstractCegarLoop]: Abstraction has 16969 states and 48759 transitions. [2022-02-10 22:31:40,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:31:40,297 INFO L276 IsEmpty]: Start isEmpty. Operand 16969 states and 48759 transitions. [2022-02-10 22:31:40,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:31:40,319 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:31:40,320 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:31:40,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-02-10 22:31:40,320 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:31:40,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:31:40,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1938680480, now seen corresponding path program 30 times [2022-02-10 22:31:40,320 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:31:40,320 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908960450] [2022-02-10 22:31:40,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:31:40,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:31:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:31:40,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:31:40,728 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:31:40,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908960450] [2022-02-10 22:31:40,729 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908960450] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:31:40,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439161793] [2022-02-10 22:31:40,729 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:31:40,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:31:40,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:31:40,730 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:31:40,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-10 22:31:40,884 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 22:31:40,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:31:40,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 22:31:40,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:31:40,921 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:31:41,088 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 22:31:41,089 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 22:31:41,490 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:31:41,646 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:31:41,839 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 22:31:42,094 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-02-10 22:31:42,095 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:31:42,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:31:42,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:31:42,759 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:31:42,759 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 57 [2022-02-10 22:31:42,765 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-02-10 22:31:42,765 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1444 treesize of output 1268 [2022-02-10 22:31:42,784 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:31:42,785 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1268 treesize of output 1188 [2022-02-10 22:31:42,796 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:31:42,796 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1180 treesize of output 1044 [2022-02-10 22:32:23,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:32:23,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439161793] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:32:23,767 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:32:23,767 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24, 21] total 62 [2022-02-10 22:32:23,767 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901890385] [2022-02-10 22:32:23,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:32:23,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-02-10 22:32:23,767 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:32:23,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-02-10 22:32:23,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=3269, Unknown=119, NotChecked=0, Total=3782 [2022-02-10 22:32:23,768 INFO L87 Difference]: Start difference. First operand 16969 states and 48759 transitions. Second operand has 62 states, 62 states have (on average 6.725806451612903) internal successors, (417), 62 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:33,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:32:33,503 INFO L93 Difference]: Finished difference Result 70260 states and 202657 transitions. [2022-02-10 22:32:33,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-10 22:32:33,504 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 6.725806451612903) internal successors, (417), 62 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:32:33,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:32:33,664 INFO L225 Difference]: With dead ends: 70260 [2022-02-10 22:32:33,664 INFO L226 Difference]: Without dead ends: 70260 [2022-02-10 22:32:33,665 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 321 SyntacticMatches, 28 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8667 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=5503, Invalid=19818, Unknown=119, NotChecked=0, Total=25440 [2022-02-10 22:32:33,665 INFO L934 BasicCegarLoop]: 616 mSDtfsCounter, 4765 mSDsluCounter, 12162 mSDsCounter, 0 mSdLazyCounter, 3588 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4765 SdHoareTripleChecker+Valid, 12448 SdHoareTripleChecker+Invalid, 4702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1085 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:32:33,665 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [4765 Valid, 12448 Invalid, 4702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3588 Invalid, 0 Unknown, 1085 Unchecked, 1.4s Time] [2022-02-10 22:32:33,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70260 states. [2022-02-10 22:32:34,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70260 to 17151. [2022-02-10 22:32:34,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17151 states, 17150 states have (on average 2.8732944606413993) internal successors, (49277), 17150 states have internal predecessors, (49277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17151 states to 17151 states and 49277 transitions. [2022-02-10 22:32:34,328 INFO L78 Accepts]: Start accepts. Automaton has 17151 states and 49277 transitions. Word has length 177 [2022-02-10 22:32:34,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:32:34,328 INFO L470 AbstractCegarLoop]: Abstraction has 17151 states and 49277 transitions. [2022-02-10 22:32:34,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 6.725806451612903) internal successors, (417), 62 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:34,328 INFO L276 IsEmpty]: Start isEmpty. Operand 17151 states and 49277 transitions. [2022-02-10 22:32:34,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:32:34,352 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:32:34,352 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:32:34,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-10 22:32:34,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:32:34,553 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:32:34,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:32:34,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1075100888, now seen corresponding path program 31 times [2022-02-10 22:32:34,553 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:32:34,553 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240680375] [2022-02-10 22:32:34,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:32:34,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:32:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:32:34,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:32:34,912 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:32:34,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240680375] [2022-02-10 22:32:34,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240680375] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:32:34,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249167395] [2022-02-10 22:32:34,912 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:32:34,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:32:34,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:32:34,914 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:32:34,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-10 22:32:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:32:35,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 22:32:35,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:32:35,090 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:32:35,135 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 22:32:35,135 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 22:32:35,388 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 22:32:35,622 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-02-10 22:32:35,622 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:32:35,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:32:35,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:32:35,855 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2653 (Array Int Int)) (~get2~0.base Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2653))) (let ((.cse1 (select .cse0 ~get2~0.base))) (or (= (select (select .cse0 c_~get1~0.base) c_~get1~0.offset) (select .cse1 c_~get2~0.offset)) (not (= |c_thread1Thread1of1ForFork0_#t~mem2| (select .cse1 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))))))))) is different from false [2022-02-10 22:32:35,890 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-02-10 22:32:35,890 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 114 treesize of output 131 [2022-02-10 22:32:35,904 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:32:35,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 92 [2022-02-10 22:32:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:32:36,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249167395] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:32:36,348 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:32:36,349 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 39 [2022-02-10 22:32:36,349 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954433656] [2022-02-10 22:32:36,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:32:36,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 22:32:36,349 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:32:36,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 22:32:36,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1282, Unknown=1, NotChecked=72, Total=1482 [2022-02-10 22:32:36,350 INFO L87 Difference]: Start difference. First operand 17151 states and 49277 transitions. Second operand has 39 states, 39 states have (on average 8.153846153846153) internal successors, (318), 39 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:38,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:32:38,356 INFO L93 Difference]: Finished difference Result 28302 states and 80824 transitions. [2022-02-10 22:32:38,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-10 22:32:38,356 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 8.153846153846153) internal successors, (318), 39 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:32:38,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:32:38,406 INFO L225 Difference]: With dead ends: 28302 [2022-02-10 22:32:38,406 INFO L226 Difference]: Without dead ends: 28302 [2022-02-10 22:32:38,406 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 341 SyntacticMatches, 7 SemanticMatches, 75 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1087, Invalid=4616, Unknown=1, NotChecked=148, Total=5852 [2022-02-10 22:32:38,407 INFO L934 BasicCegarLoop]: 405 mSDtfsCounter, 2135 mSDsluCounter, 6025 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2135 SdHoareTripleChecker+Valid, 6282 SdHoareTripleChecker+Invalid, 2423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 607 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:32:38,407 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2135 Valid, 6282 Invalid, 2423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1792 Invalid, 0 Unknown, 607 Unchecked, 0.6s Time] [2022-02-10 22:32:38,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28302 states. [2022-02-10 22:32:38,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28302 to 16203. [2022-02-10 22:32:38,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16203 states, 16202 states have (on average 2.859338353289717) internal successors, (46327), 16202 states have internal predecessors, (46327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:38,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16203 states to 16203 states and 46327 transitions. [2022-02-10 22:32:38,715 INFO L78 Accepts]: Start accepts. Automaton has 16203 states and 46327 transitions. Word has length 177 [2022-02-10 22:32:38,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:32:38,716 INFO L470 AbstractCegarLoop]: Abstraction has 16203 states and 46327 transitions. [2022-02-10 22:32:38,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 8.153846153846153) internal successors, (318), 39 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:38,716 INFO L276 IsEmpty]: Start isEmpty. Operand 16203 states and 46327 transitions. [2022-02-10 22:32:38,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:32:38,738 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:32:38,738 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:32:38,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-02-10 22:32:38,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:32:38,938 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:32:38,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:32:38,939 INFO L85 PathProgramCache]: Analyzing trace with hash 100811472, now seen corresponding path program 29 times [2022-02-10 22:32:38,939 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:32:38,939 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383451828] [2022-02-10 22:32:38,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:32:38,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:32:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:32:39,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:32:39,326 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:32:39,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383451828] [2022-02-10 22:32:39,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383451828] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:32:39,326 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:32:39,326 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-10 22:32:39,326 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760858106] [2022-02-10 22:32:39,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:32:39,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:32:39,326 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:32:39,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:32:39,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:32:39,327 INFO L87 Difference]: Start difference. First operand 16203 states and 46327 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:40,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:32:40,274 INFO L93 Difference]: Finished difference Result 25662 states and 73564 transitions. [2022-02-10 22:32:40,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-10 22:32:40,274 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:32:40,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:32:40,324 INFO L225 Difference]: With dead ends: 25662 [2022-02-10 22:32:40,324 INFO L226 Difference]: Without dead ends: 25662 [2022-02-10 22:32:40,324 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=510, Invalid=1842, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 22:32:40,325 INFO L934 BasicCegarLoop]: 332 mSDtfsCounter, 1265 mSDsluCounter, 3514 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1265 SdHoareTripleChecker+Valid, 3768 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:32:40,325 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1265 Valid, 3768 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:32:40,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25662 states. [2022-02-10 22:32:40,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25662 to 16203. [2022-02-10 22:32:40,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16203 states, 16202 states have (on average 2.859338353289717) internal successors, (46327), 16202 states have internal predecessors, (46327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:40,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16203 states to 16203 states and 46327 transitions. [2022-02-10 22:32:40,627 INFO L78 Accepts]: Start accepts. Automaton has 16203 states and 46327 transitions. Word has length 177 [2022-02-10 22:32:40,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:32:40,627 INFO L470 AbstractCegarLoop]: Abstraction has 16203 states and 46327 transitions. [2022-02-10 22:32:40,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:40,627 INFO L276 IsEmpty]: Start isEmpty. Operand 16203 states and 46327 transitions. [2022-02-10 22:32:40,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:32:40,649 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:32:40,649 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:32:40,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-02-10 22:32:40,649 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:32:40,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:32:40,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1595530710, now seen corresponding path program 30 times [2022-02-10 22:32:40,649 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:32:40,649 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648581846] [2022-02-10 22:32:40,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:32:40,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:32:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:32:41,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:32:41,053 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:32:41,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648581846] [2022-02-10 22:32:41,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648581846] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:32:41,053 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:32:41,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-10 22:32:41,053 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183971818] [2022-02-10 22:32:41,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:32:41,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:32:41,054 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:32:41,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:32:41,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:32:41,054 INFO L87 Difference]: Start difference. First operand 16203 states and 46327 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:41,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:32:41,905 INFO L93 Difference]: Finished difference Result 25064 states and 71808 transitions. [2022-02-10 22:32:41,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 22:32:41,905 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:32:41,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:32:41,955 INFO L225 Difference]: With dead ends: 25064 [2022-02-10 22:32:41,955 INFO L226 Difference]: Without dead ends: 25064 [2022-02-10 22:32:41,955 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=1697, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 22:32:41,956 INFO L934 BasicCegarLoop]: 337 mSDtfsCounter, 1111 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 3261 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:32:41,956 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1111 Valid, 3261 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:32:41,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25064 states. [2022-02-10 22:32:42,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25064 to 16219. [2022-02-10 22:32:42,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16219 states, 16218 states have (on average 2.8602170427919598) internal successors, (46387), 16218 states have internal predecessors, (46387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:42,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16219 states to 16219 states and 46387 transitions. [2022-02-10 22:32:42,436 INFO L78 Accepts]: Start accepts. Automaton has 16219 states and 46387 transitions. Word has length 177 [2022-02-10 22:32:42,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:32:42,437 INFO L470 AbstractCegarLoop]: Abstraction has 16219 states and 46387 transitions. [2022-02-10 22:32:42,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:42,437 INFO L276 IsEmpty]: Start isEmpty. Operand 16219 states and 46387 transitions. [2022-02-10 22:32:42,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:32:42,460 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:32:42,461 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:32:42,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-02-10 22:32:42,461 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:32:42,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:32:42,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1783410800, now seen corresponding path program 32 times [2022-02-10 22:32:42,461 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:32:42,462 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132478831] [2022-02-10 22:32:42,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:32:42,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:32:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:32:42,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:32:42,845 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:32:42,845 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132478831] [2022-02-10 22:32:42,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132478831] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:32:42,845 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:32:42,845 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:32:42,845 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336554874] [2022-02-10 22:32:42,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:32:42,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:32:42,845 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:32:42,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:32:42,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:32:42,846 INFO L87 Difference]: Start difference. First operand 16219 states and 46387 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:43,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:32:43,676 INFO L93 Difference]: Finished difference Result 24884 states and 71306 transitions. [2022-02-10 22:32:43,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 22:32:43,676 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:32:43,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:32:43,727 INFO L225 Difference]: With dead ends: 24884 [2022-02-10 22:32:43,727 INFO L226 Difference]: Without dead ends: 24884 [2022-02-10 22:32:43,728 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=459, Invalid=1611, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 22:32:43,728 INFO L934 BasicCegarLoop]: 336 mSDtfsCounter, 1224 mSDsluCounter, 2944 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 3206 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:32:43,728 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1224 Valid, 3206 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:32:43,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24884 states. [2022-02-10 22:32:43,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24884 to 16227. [2022-02-10 22:32:44,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16227 states, 16226 states have (on average 2.8601627018365585) internal successors, (46409), 16226 states have internal predecessors, (46409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:44,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16227 states to 16227 states and 46409 transitions. [2022-02-10 22:32:44,041 INFO L78 Accepts]: Start accepts. Automaton has 16227 states and 46409 transitions. Word has length 177 [2022-02-10 22:32:44,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:32:44,041 INFO L470 AbstractCegarLoop]: Abstraction has 16227 states and 46409 transitions. [2022-02-10 22:32:44,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:44,042 INFO L276 IsEmpty]: Start isEmpty. Operand 16227 states and 46409 transitions. [2022-02-10 22:32:44,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:32:44,064 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:32:44,064 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:32:44,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-02-10 22:32:44,065 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:32:44,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:32:44,065 INFO L85 PathProgramCache]: Analyzing trace with hash -387669902, now seen corresponding path program 30 times [2022-02-10 22:32:44,065 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:32:44,065 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846244262] [2022-02-10 22:32:44,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:32:44,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:32:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:32:44,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:32:44,459 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:32:44,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846244262] [2022-02-10 22:32:44,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846244262] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:32:44,460 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:32:44,460 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-10 22:32:44,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461172485] [2022-02-10 22:32:44,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:32:44,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:32:44,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:32:44,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:32:44,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:32:44,460 INFO L87 Difference]: Start difference. First operand 16227 states and 46409 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:45,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:32:45,301 INFO L93 Difference]: Finished difference Result 24260 states and 69552 transitions. [2022-02-10 22:32:45,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 22:32:45,302 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:32:45,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:32:45,345 INFO L225 Difference]: With dead ends: 24260 [2022-02-10 22:32:45,345 INFO L226 Difference]: Without dead ends: 24260 [2022-02-10 22:32:45,345 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=474, Invalid=1688, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 22:32:45,345 INFO L934 BasicCegarLoop]: 327 mSDtfsCounter, 1217 mSDsluCounter, 2947 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:32:45,345 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1217 Valid, 3219 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:32:45,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24260 states. [2022-02-10 22:32:45,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24260 to 16219. [2022-02-10 22:32:45,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16219 states, 16218 states have (on average 2.8602170427919598) internal successors, (46387), 16218 states have internal predecessors, (46387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:45,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16219 states to 16219 states and 46387 transitions. [2022-02-10 22:32:45,742 INFO L78 Accepts]: Start accepts. Automaton has 16219 states and 46387 transitions. Word has length 177 [2022-02-10 22:32:45,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:32:45,742 INFO L470 AbstractCegarLoop]: Abstraction has 16219 states and 46387 transitions. [2022-02-10 22:32:45,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:45,742 INFO L276 IsEmpty]: Start isEmpty. Operand 16219 states and 46387 transitions. [2022-02-10 22:32:45,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:32:45,764 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:32:45,764 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:32:45,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-02-10 22:32:45,764 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:32:45,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:32:45,765 INFO L85 PathProgramCache]: Analyzing trace with hash 75904840, now seen corresponding path program 21 times [2022-02-10 22:32:45,765 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:32:45,765 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70400341] [2022-02-10 22:32:45,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:32:45,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:32:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:32:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:32:46,161 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:32:46,161 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70400341] [2022-02-10 22:32:46,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70400341] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:32:46,161 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:32:46,161 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:32:46,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705688545] [2022-02-10 22:32:46,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:32:46,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:32:46,162 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:32:46,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:32:46,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:32:46,162 INFO L87 Difference]: Start difference. First operand 16219 states and 46387 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:47,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:32:47,000 INFO L93 Difference]: Finished difference Result 24476 states and 70178 transitions. [2022-02-10 22:32:47,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 22:32:47,000 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:32:47,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:32:47,045 INFO L225 Difference]: With dead ends: 24476 [2022-02-10 22:32:47,045 INFO L226 Difference]: Without dead ends: 24476 [2022-02-10 22:32:47,045 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=468, Invalid=1602, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 22:32:47,045 INFO L934 BasicCegarLoop]: 327 mSDtfsCounter, 1225 mSDsluCounter, 2782 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:32:47,045 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1225 Valid, 3057 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:32:47,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24476 states. [2022-02-10 22:32:47,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24476 to 16195. [2022-02-10 22:32:47,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16195 states, 16194 states have (on average 2.858898357416327) internal successors, (46297), 16194 states have internal predecessors, (46297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:47,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16195 states to 16195 states and 46297 transitions. [2022-02-10 22:32:47,341 INFO L78 Accepts]: Start accepts. Automaton has 16195 states and 46297 transitions. Word has length 177 [2022-02-10 22:32:47,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:32:47,341 INFO L470 AbstractCegarLoop]: Abstraction has 16195 states and 46297 transitions. [2022-02-10 22:32:47,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:47,341 INFO L276 IsEmpty]: Start isEmpty. Operand 16195 states and 46297 transitions. [2022-02-10 22:32:47,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:32:47,364 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:32:47,364 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:32:47,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-02-10 22:32:47,364 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:32:47,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:32:47,364 INFO L85 PathProgramCache]: Analyzing trace with hash 29862778, now seen corresponding path program 31 times [2022-02-10 22:32:47,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:32:47,364 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104737746] [2022-02-10 22:32:47,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:32:47,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:32:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:32:47,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:32:47,758 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:32:47,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104737746] [2022-02-10 22:32:47,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104737746] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:32:47,759 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:32:47,759 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-10 22:32:47,759 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625577423] [2022-02-10 22:32:47,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:32:47,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:32:47,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:32:47,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:32:47,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:32:47,759 INFO L87 Difference]: Start difference. First operand 16195 states and 46297 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:48,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:32:48,581 INFO L93 Difference]: Finished difference Result 24912 states and 71310 transitions. [2022-02-10 22:32:48,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 22:32:48,581 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:32:48,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:32:48,628 INFO L225 Difference]: With dead ends: 24912 [2022-02-10 22:32:48,628 INFO L226 Difference]: Without dead ends: 24912 [2022-02-10 22:32:48,628 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=433, Invalid=1637, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 22:32:48,628 INFO L934 BasicCegarLoop]: 336 mSDtfsCounter, 1100 mSDsluCounter, 3025 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 3291 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:32:48,628 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 3291 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:32:48,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24912 states. [2022-02-10 22:32:48,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24912 to 16195. [2022-02-10 22:32:48,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16195 states, 16194 states have (on average 2.8584043472891194) internal successors, (46289), 16194 states have internal predecessors, (46289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:48,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16195 states to 16195 states and 46289 transitions. [2022-02-10 22:32:48,933 INFO L78 Accepts]: Start accepts. Automaton has 16195 states and 46289 transitions. Word has length 177 [2022-02-10 22:32:48,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:32:48,933 INFO L470 AbstractCegarLoop]: Abstraction has 16195 states and 46289 transitions. [2022-02-10 22:32:48,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:48,933 INFO L276 IsEmpty]: Start isEmpty. Operand 16195 states and 46289 transitions. [2022-02-10 22:32:48,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:32:48,955 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:32:48,955 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:32:48,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-02-10 22:32:48,955 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:32:48,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:32:48,955 INFO L85 PathProgramCache]: Analyzing trace with hash -158017312, now seen corresponding path program 33 times [2022-02-10 22:32:48,955 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:32:48,955 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120428366] [2022-02-10 22:32:48,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:32:48,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:32:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:32:49,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:32:49,397 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:32:49,397 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120428366] [2022-02-10 22:32:49,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120428366] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:32:49,397 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:32:49,397 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:32:49,397 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731499499] [2022-02-10 22:32:49,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:32:49,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:32:49,397 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:32:49,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:32:49,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:32:49,397 INFO L87 Difference]: Start difference. First operand 16195 states and 46289 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:50,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:32:50,196 INFO L93 Difference]: Finished difference Result 24360 states and 69482 transitions. [2022-02-10 22:32:50,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 22:32:50,197 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:32:50,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:32:50,242 INFO L225 Difference]: With dead ends: 24360 [2022-02-10 22:32:50,242 INFO L226 Difference]: Without dead ends: 24360 [2022-02-10 22:32:50,242 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=428, Invalid=1552, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 22:32:50,242 INFO L934 BasicCegarLoop]: 335 mSDtfsCounter, 1184 mSDsluCounter, 2782 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 3049 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:32:50,243 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1184 Valid, 3049 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:32:50,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24360 states. [2022-02-10 22:32:50,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24360 to 15839. [2022-02-10 22:32:50,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15839 states, 15838 states have (on average 2.8417098118449298) internal successors, (45007), 15838 states have internal predecessors, (45007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:50,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15839 states to 15839 states and 45007 transitions. [2022-02-10 22:32:50,567 INFO L78 Accepts]: Start accepts. Automaton has 15839 states and 45007 transitions. Word has length 177 [2022-02-10 22:32:50,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:32:50,567 INFO L470 AbstractCegarLoop]: Abstraction has 15839 states and 45007 transitions. [2022-02-10 22:32:50,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:50,567 INFO L276 IsEmpty]: Start isEmpty. Operand 15839 states and 45007 transitions. [2022-02-10 22:32:50,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:32:50,589 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:32:50,589 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:32:50,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-02-10 22:32:50,589 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:32:50,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:32:50,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1237723586, now seen corresponding path program 31 times [2022-02-10 22:32:50,589 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:32:50,589 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410908885] [2022-02-10 22:32:50,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:32:50,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:32:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:32:50,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:32:50,991 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:32:50,991 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410908885] [2022-02-10 22:32:50,991 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410908885] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:32:50,991 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:32:50,991 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-10 22:32:50,991 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987559774] [2022-02-10 22:32:50,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:32:50,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:32:50,992 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:32:50,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:32:50,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:32:50,992 INFO L87 Difference]: Start difference. First operand 15839 states and 45007 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:51,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:32:51,816 INFO L93 Difference]: Finished difference Result 23760 states and 67794 transitions. [2022-02-10 22:32:51,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 22:32:51,816 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:32:51,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:32:51,861 INFO L225 Difference]: With dead ends: 23760 [2022-02-10 22:32:51,861 INFO L226 Difference]: Without dead ends: 23760 [2022-02-10 22:32:51,861 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=472, Invalid=1690, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 22:32:51,862 INFO L934 BasicCegarLoop]: 327 mSDtfsCounter, 1240 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 2956 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:32:51,862 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1240 Valid, 2956 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:32:51,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23760 states. [2022-02-10 22:32:52,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23760 to 15839. [2022-02-10 22:32:52,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15839 states, 15838 states have (on average 2.8417098118449298) internal successors, (45007), 15838 states have internal predecessors, (45007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:52,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15839 states to 15839 states and 45007 transitions. [2022-02-10 22:32:52,165 INFO L78 Accepts]: Start accepts. Automaton has 15839 states and 45007 transitions. Word has length 177 [2022-02-10 22:32:52,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:32:52,165 INFO L470 AbstractCegarLoop]: Abstraction has 15839 states and 45007 transitions. [2022-02-10 22:32:52,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:52,165 INFO L276 IsEmpty]: Start isEmpty. Operand 15839 states and 45007 transitions. [2022-02-10 22:32:52,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:32:52,188 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:32:52,188 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:32:52,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-02-10 22:32:52,188 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:32:52,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:32:52,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1701298328, now seen corresponding path program 22 times [2022-02-10 22:32:52,189 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:32:52,189 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102293093] [2022-02-10 22:32:52,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:32:52,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:32:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:32:52,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:32:52,613 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:32:52,613 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102293093] [2022-02-10 22:32:52,613 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102293093] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:32:52,613 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:32:52,613 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:32:52,613 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389188167] [2022-02-10 22:32:52,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:32:52,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:32:52,613 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:32:52,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:32:52,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:32:52,614 INFO L87 Difference]: Start difference. First operand 15839 states and 45007 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:53,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:32:53,524 INFO L93 Difference]: Finished difference Result 23984 states and 68442 transitions. [2022-02-10 22:32:53,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 22:32:53,524 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:32:53,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:32:53,566 INFO L225 Difference]: With dead ends: 23984 [2022-02-10 22:32:53,566 INFO L226 Difference]: Without dead ends: 23984 [2022-02-10 22:32:53,566 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=466, Invalid=1604, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 22:32:53,567 INFO L934 BasicCegarLoop]: 347 mSDtfsCounter, 1089 mSDsluCounter, 3321 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 3605 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:32:53,567 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1089 Valid, 3605 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:32:53,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23984 states. [2022-02-10 22:32:53,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23984 to 15831. [2022-02-10 22:32:53,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15831 states, 15830 states have (on average 2.8407454200884397) internal successors, (44969), 15830 states have internal predecessors, (44969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:53,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15831 states to 15831 states and 44969 transitions. [2022-02-10 22:32:53,859 INFO L78 Accepts]: Start accepts. Automaton has 15831 states and 44969 transitions. Word has length 177 [2022-02-10 22:32:53,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:32:53,859 INFO L470 AbstractCegarLoop]: Abstraction has 15831 states and 44969 transitions. [2022-02-10 22:32:53,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:53,859 INFO L276 IsEmpty]: Start isEmpty. Operand 15831 states and 44969 transitions. [2022-02-10 22:32:53,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:32:53,882 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:32:53,882 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:32:53,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-02-10 22:32:53,882 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:32:53,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:32:53,883 INFO L85 PathProgramCache]: Analyzing trace with hash 981087844, now seen corresponding path program 32 times [2022-02-10 22:32:53,883 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:32:53,883 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417041904] [2022-02-10 22:32:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:32:53,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:32:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:32:54,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:32:54,275 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:32:54,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417041904] [2022-02-10 22:32:54,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417041904] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:32:54,275 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:32:54,275 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-10 22:32:54,275 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382643277] [2022-02-10 22:32:54,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:32:54,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:32:54,276 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:32:54,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:32:54,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:32:54,276 INFO L87 Difference]: Start difference. First operand 15831 states and 44969 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:55,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:32:55,222 INFO L93 Difference]: Finished difference Result 22896 states and 65136 transitions. [2022-02-10 22:32:55,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-10 22:32:55,223 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:32:55,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:32:55,267 INFO L225 Difference]: With dead ends: 22896 [2022-02-10 22:32:55,267 INFO L226 Difference]: Without dead ends: 22896 [2022-02-10 22:32:55,267 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=525, Invalid=1827, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 22:32:55,268 INFO L934 BasicCegarLoop]: 326 mSDtfsCounter, 1200 mSDsluCounter, 3504 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 3773 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:32:55,268 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1200 Valid, 3773 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:32:55,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22896 states. [2022-02-10 22:32:55,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22896 to 15063. [2022-02-10 22:32:55,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15063 states, 15062 states have (on average 2.8287743991501793) internal successors, (42607), 15062 states have internal predecessors, (42607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:55,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15063 states to 15063 states and 42607 transitions. [2022-02-10 22:32:55,552 INFO L78 Accepts]: Start accepts. Automaton has 15063 states and 42607 transitions. Word has length 177 [2022-02-10 22:32:55,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:32:55,552 INFO L470 AbstractCegarLoop]: Abstraction has 15063 states and 42607 transitions. [2022-02-10 22:32:55,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:55,552 INFO L276 IsEmpty]: Start isEmpty. Operand 15063 states and 42607 transitions. [2022-02-10 22:32:55,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:32:55,575 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:32:55,575 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:32:55,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-02-10 22:32:55,575 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:32:55,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:32:55,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1275970236, now seen corresponding path program 23 times [2022-02-10 22:32:55,575 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:32:55,575 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854239124] [2022-02-10 22:32:55,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:32:55,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:32:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:32:55,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:32:55,968 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:32:55,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854239124] [2022-02-10 22:32:55,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854239124] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:32:55,969 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:32:55,969 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:32:55,969 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353584091] [2022-02-10 22:32:55,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:32:55,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:32:55,969 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:32:55,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:32:55,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:32:55,969 INFO L87 Difference]: Start difference. First operand 15063 states and 42607 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:56,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:32:56,888 INFO L93 Difference]: Finished difference Result 22976 states and 65380 transitions. [2022-02-10 22:32:56,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-10 22:32:56,888 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:32:56,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:32:56,929 INFO L225 Difference]: With dead ends: 22976 [2022-02-10 22:32:56,930 INFO L226 Difference]: Without dead ends: 22976 [2022-02-10 22:32:56,930 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=518, Invalid=1738, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 22:32:56,930 INFO L934 BasicCegarLoop]: 326 mSDtfsCounter, 1226 mSDsluCounter, 3093 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 3361 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:32:56,930 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1226 Valid, 3361 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:32:56,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22976 states. [2022-02-10 22:32:57,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22976 to 15079. [2022-02-10 22:32:57,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15079 states, 15078 states have (on average 2.828690807799443) internal successors, (42651), 15078 states have internal predecessors, (42651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:57,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15079 states to 15079 states and 42651 transitions. [2022-02-10 22:32:57,252 INFO L78 Accepts]: Start accepts. Automaton has 15079 states and 42651 transitions. Word has length 177 [2022-02-10 22:32:57,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:32:57,252 INFO L470 AbstractCegarLoop]: Abstraction has 15079 states and 42651 transitions. [2022-02-10 22:32:57,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:57,252 INFO L276 IsEmpty]: Start isEmpty. Operand 15079 states and 42651 transitions. [2022-02-10 22:32:57,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:32:57,273 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:32:57,273 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:32:57,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-02-10 22:32:57,273 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:32:57,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:32:57,274 INFO L85 PathProgramCache]: Analyzing trace with hash -818393186, now seen corresponding path program 24 times [2022-02-10 22:32:57,274 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:32:57,274 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276610943] [2022-02-10 22:32:57,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:32:57,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:32:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:32:57,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:32:57,652 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:32:57,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276610943] [2022-02-10 22:32:57,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276610943] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:32:57,652 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:32:57,652 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:32:57,652 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413687785] [2022-02-10 22:32:57,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:32:57,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:32:57,652 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:32:57,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:32:57,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:32:57,652 INFO L87 Difference]: Start difference. First operand 15079 states and 42651 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:58,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:32:58,608 INFO L93 Difference]: Finished difference Result 23592 states and 67146 transitions. [2022-02-10 22:32:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-10 22:32:58,608 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:32:58,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:32:58,652 INFO L225 Difference]: With dead ends: 23592 [2022-02-10 22:32:58,652 INFO L226 Difference]: Without dead ends: 23592 [2022-02-10 22:32:58,653 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=566, Invalid=1884, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 22:32:58,653 INFO L934 BasicCegarLoop]: 382 mSDtfsCounter, 1116 mSDsluCounter, 3224 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 3547 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:32:58,653 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1116 Valid, 3547 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:32:58,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23592 states. [2022-02-10 22:32:58,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23592 to 14805. [2022-02-10 22:32:58,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14805 states, 14804 states have (on average 2.828492299378546) internal successors, (41873), 14804 states have internal predecessors, (41873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14805 states to 14805 states and 41873 transitions. [2022-02-10 22:32:58,926 INFO L78 Accepts]: Start accepts. Automaton has 14805 states and 41873 transitions. Word has length 177 [2022-02-10 22:32:58,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:32:58,926 INFO L470 AbstractCegarLoop]: Abstraction has 14805 states and 41873 transitions. [2022-02-10 22:32:58,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:32:58,926 INFO L276 IsEmpty]: Start isEmpty. Operand 14805 states and 41873 transitions. [2022-02-10 22:32:58,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:32:58,947 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:32:58,947 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:32:58,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-02-10 22:32:58,947 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:32:58,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:32:58,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1733582088, now seen corresponding path program 34 times [2022-02-10 22:32:58,947 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:32:58,947 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842474949] [2022-02-10 22:32:58,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:32:58,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:32:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:32:59,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:32:59,342 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:32:59,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842474949] [2022-02-10 22:32:59,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842474949] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:32:59,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643907083] [2022-02-10 22:32:59,343 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:32:59,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:32:59,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:32:59,344 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:32:59,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-10 22:32:59,503 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:32:59,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:32:59,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 56 conjunts are in the unsatisfiable core [2022-02-10 22:32:59,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:33:00,081 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:33:00,273 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:33:00,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 22:33:00,422 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 22:33:00,702 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-02-10 22:33:00,702 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:33:00,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:33:00,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:33:01,387 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:33:01,388 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 57 [2022-02-10 22:33:01,394 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-02-10 22:33:01,395 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 868 treesize of output 756 [2022-02-10 22:33:01,403 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:33:01,404 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 756 treesize of output 684 [2022-02-10 22:33:01,414 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:33:01,414 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 676 treesize of output 628 [2022-02-10 22:33:02,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:33:02,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643907083] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:33:02,229 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:33:02,229 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24, 21] total 62 [2022-02-10 22:33:02,229 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942056901] [2022-02-10 22:33:02,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:33:02,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-02-10 22:33:02,230 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:33:02,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-02-10 22:33:02,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=3282, Unknown=108, NotChecked=0, Total=3782 [2022-02-10 22:33:02,230 INFO L87 Difference]: Start difference. First operand 14805 states and 41873 transitions. Second operand has 62 states, 62 states have (on average 6.758064516129032) internal successors, (419), 62 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:33:07,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:33:07,999 INFO L93 Difference]: Finished difference Result 38455 states and 110518 transitions. [2022-02-10 22:33:07,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-10 22:33:08,000 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 6.758064516129032) internal successors, (419), 62 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:33:08,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:33:08,154 INFO L225 Difference]: With dead ends: 38455 [2022-02-10 22:33:08,154 INFO L226 Difference]: Without dead ends: 38455 [2022-02-10 22:33:08,154 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 319 SyntacticMatches, 16 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3969 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=2969, Invalid=11203, Unknown=108, NotChecked=0, Total=14280 [2022-02-10 22:33:08,155 INFO L934 BasicCegarLoop]: 436 mSDtfsCounter, 3801 mSDsluCounter, 8686 mSDsCounter, 0 mSdLazyCounter, 2801 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3801 SdHoareTripleChecker+Valid, 8880 SdHoareTripleChecker+Invalid, 3302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 468 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:33:08,155 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3801 Valid, 8880 Invalid, 3302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2801 Invalid, 0 Unknown, 468 Unchecked, 1.0s Time] [2022-02-10 22:33:08,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38455 states. [2022-02-10 22:33:08,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38455 to 14103. [2022-02-10 22:33:08,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14103 states, 14102 states have (on average 2.8575379378811516) internal successors, (40297), 14102 states have internal predecessors, (40297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:33:08,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14103 states to 14103 states and 40297 transitions. [2022-02-10 22:33:08,499 INFO L78 Accepts]: Start accepts. Automaton has 14103 states and 40297 transitions. Word has length 177 [2022-02-10 22:33:08,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:33:08,500 INFO L470 AbstractCegarLoop]: Abstraction has 14103 states and 40297 transitions. [2022-02-10 22:33:08,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 6.758064516129032) internal successors, (419), 62 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:33:08,500 INFO L276 IsEmpty]: Start isEmpty. Operand 14103 states and 40297 transitions. [2022-02-10 22:33:08,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:33:08,519 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:33:08,519 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:33:08,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-10 22:33:08,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:33:08,720 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:33:08,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:33:08,721 INFO L85 PathProgramCache]: Analyzing trace with hash 99296670, now seen corresponding path program 32 times [2022-02-10 22:33:08,721 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:33:08,721 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367236821] [2022-02-10 22:33:08,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:33:08,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:33:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:33:09,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:33:09,121 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:33:09,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367236821] [2022-02-10 22:33:09,121 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367236821] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:33:09,121 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:33:09,122 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-10 22:33:09,122 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692312289] [2022-02-10 22:33:09,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:33:09,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:33:09,122 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:33:09,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:33:09,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:33:09,122 INFO L87 Difference]: Start difference. First operand 14103 states and 40297 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:33:10,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:33:10,136 INFO L93 Difference]: Finished difference Result 23967 states and 68345 transitions. [2022-02-10 22:33:10,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 22:33:10,136 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:33:10,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:33:10,181 INFO L225 Difference]: With dead ends: 23967 [2022-02-10 22:33:10,181 INFO L226 Difference]: Without dead ends: 23967 [2022-02-10 22:33:10,182 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=440, Invalid=1722, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 22:33:10,182 INFO L934 BasicCegarLoop]: 428 mSDtfsCounter, 1464 mSDsluCounter, 4197 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 4519 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:33:10,182 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1464 Valid, 4519 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:33:10,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23967 states. [2022-02-10 22:33:10,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23967 to 14165. [2022-02-10 22:33:10,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14165 states, 14164 states have (on average 2.8506777746399323) internal successors, (40377), 14164 states have internal predecessors, (40377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:33:10,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14165 states to 14165 states and 40377 transitions. [2022-02-10 22:33:10,471 INFO L78 Accepts]: Start accepts. Automaton has 14165 states and 40377 transitions. Word has length 177 [2022-02-10 22:33:10,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:33:10,471 INFO L470 AbstractCegarLoop]: Abstraction has 14165 states and 40377 transitions. [2022-02-10 22:33:10,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:33:10,471 INFO L276 IsEmpty]: Start isEmpty. Operand 14165 states and 40377 transitions. [2022-02-10 22:33:10,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:33:10,492 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:33:10,492 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:33:10,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-02-10 22:33:10,493 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:33:10,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:33:10,493 INFO L85 PathProgramCache]: Analyzing trace with hash 719692692, now seen corresponding path program 33 times [2022-02-10 22:33:10,493 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:33:10,493 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289214926] [2022-02-10 22:33:10,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:33:10,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:33:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:33:10,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:33:10,912 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:33:10,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289214926] [2022-02-10 22:33:10,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289214926] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:33:10,912 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:33:10,912 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-10 22:33:10,912 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184813189] [2022-02-10 22:33:10,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:33:10,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:33:10,912 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:33:10,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:33:10,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:33:10,913 INFO L87 Difference]: Start difference. First operand 14165 states and 40377 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:33:11,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:33:11,918 INFO L93 Difference]: Finished difference Result 21062 states and 60230 transitions. [2022-02-10 22:33:11,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-10 22:33:11,919 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:33:11,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:33:11,958 INFO L225 Difference]: With dead ends: 21062 [2022-02-10 22:33:11,958 INFO L226 Difference]: Without dead ends: 21062 [2022-02-10 22:33:11,958 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=406, Invalid=1574, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 22:33:11,958 INFO L934 BasicCegarLoop]: 375 mSDtfsCounter, 1193 mSDsluCounter, 4284 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 4565 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:33:11,958 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1193 Valid, 4565 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:33:11,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21062 states. [2022-02-10 22:33:12,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21062 to 14405. [2022-02-10 22:33:12,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14405 states, 14404 states have (on average 2.8465009719522354) internal successors, (41001), 14404 states have internal predecessors, (41001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:33:12,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14405 states to 14405 states and 41001 transitions. [2022-02-10 22:33:12,265 INFO L78 Accepts]: Start accepts. Automaton has 14405 states and 41001 transitions. Word has length 177 [2022-02-10 22:33:12,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:33:12,265 INFO L470 AbstractCegarLoop]: Abstraction has 14405 states and 41001 transitions. [2022-02-10 22:33:12,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:33:12,265 INFO L276 IsEmpty]: Start isEmpty. Operand 14405 states and 41001 transitions. [2022-02-10 22:33:12,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:33:12,287 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:33:12,287 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:33:12,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-02-10 22:33:12,288 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:33:12,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:33:12,288 INFO L85 PathProgramCache]: Analyzing trace with hash -810387584, now seen corresponding path program 34 times [2022-02-10 22:33:12,288 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:33:12,288 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575740686] [2022-02-10 22:33:12,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:33:12,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:33:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:33:12,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:33:12,740 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:33:12,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575740686] [2022-02-10 22:33:12,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575740686] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:33:12,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373313207] [2022-02-10 22:33:12,740 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:33:12,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:33:12,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:33:12,741 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:33:12,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-10 22:33:12,900 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:33:12,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:33:12,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 56 conjunts are in the unsatisfiable core [2022-02-10 22:33:12,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:33:13,507 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:33:13,707 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:33:13,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 22:33:13,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 22:33:13,912 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-02-10 22:33:13,912 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-02-10 22:33:14,355 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-02-10 22:33:14,355 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-02-10 22:33:14,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:33:14,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:33:15,343 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:33:15,344 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 53 [2022-02-10 22:33:15,350 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-02-10 22:33:15,350 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 631 treesize of output 551 [2022-02-10 22:33:15,358 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:33:15,358 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 551 treesize of output 519 [2022-02-10 22:33:15,367 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:33:15,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 470 treesize of output 414 [2022-02-10 22:33:16,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:33:16,760 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373313207] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:33:16,760 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:33:16,760 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 27, 25] total 71 [2022-02-10 22:33:16,760 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990126666] [2022-02-10 22:33:16,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:33:16,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-02-10 22:33:16,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:33:16,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-02-10 22:33:16,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=4578, Unknown=98, NotChecked=0, Total=4970 [2022-02-10 22:33:16,762 INFO L87 Difference]: Start difference. First operand 14405 states and 41001 transitions. Second operand has 71 states, 71 states have (on average 6.056338028169014) internal successors, (430), 71 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:33:23,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:33:23,698 INFO L93 Difference]: Finished difference Result 28530 states and 81572 transitions. [2022-02-10 22:33:23,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-10 22:33:23,698 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 6.056338028169014) internal successors, (430), 71 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:33:23,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:33:23,756 INFO L225 Difference]: With dead ends: 28530 [2022-02-10 22:33:23,756 INFO L226 Difference]: Without dead ends: 28530 [2022-02-10 22:33:23,757 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 309 SyntacticMatches, 15 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3136 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=2426, Invalid=12238, Unknown=98, NotChecked=0, Total=14762 [2022-02-10 22:33:23,757 INFO L934 BasicCegarLoop]: 590 mSDtfsCounter, 4494 mSDsluCounter, 14683 mSDsCounter, 0 mSdLazyCounter, 3949 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4494 SdHoareTripleChecker+Valid, 14862 SdHoareTripleChecker+Invalid, 4814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 3949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 820 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:33:23,758 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [4494 Valid, 14862 Invalid, 4814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 3949 Invalid, 0 Unknown, 820 Unchecked, 1.5s Time] [2022-02-10 22:33:23,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28530 states. [2022-02-10 22:33:24,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28530 to 16371. [2022-02-10 22:33:24,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16371 states, 16370 states have (on average 2.8591936469150885) internal successors, (46805), 16370 states have internal predecessors, (46805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:33:24,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16371 states to 16371 states and 46805 transitions. [2022-02-10 22:33:24,194 INFO L78 Accepts]: Start accepts. Automaton has 16371 states and 46805 transitions. Word has length 177 [2022-02-10 22:33:24,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:33:24,194 INFO L470 AbstractCegarLoop]: Abstraction has 16371 states and 46805 transitions. [2022-02-10 22:33:24,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 6.056338028169014) internal successors, (430), 71 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:33:24,195 INFO L276 IsEmpty]: Start isEmpty. Operand 16371 states and 46805 transitions. [2022-02-10 22:33:24,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:33:24,219 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:33:24,219 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:33:24,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-10 22:33:24,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2022-02-10 22:33:24,420 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:33:24,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:33:24,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1991958410, now seen corresponding path program 35 times [2022-02-10 22:33:24,421 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:33:24,421 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127560965] [2022-02-10 22:33:24,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:33:24,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:33:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:33:24,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:33:24,859 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:33:24,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127560965] [2022-02-10 22:33:24,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127560965] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:33:24,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900970963] [2022-02-10 22:33:24,860 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:33:24,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:33:24,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:33:24,861 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:33:24,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-10 22:33:25,024 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:33:25,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:33:25,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 73 conjunts are in the unsatisfiable core [2022-02-10 22:33:25,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:33:25,066 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:33:25,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 22:33:25,228 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-02-10 22:33:25,372 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:33:25,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 22:33:25,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 22:33:25,750 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 22:33:25,751 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2022-02-10 22:33:25,926 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:33:26,191 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:33:26,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 22:33:26,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 22:33:26,449 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-02-10 22:33:26,701 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:33:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:33:26,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:33:28,525 INFO L353 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2022-02-10 22:33:28,525 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 170 treesize of output 76 [2022-02-10 22:33:28,545 INFO L353 Elim1Store]: treesize reduction 13, result has 66.7 percent of original size [2022-02-10 22:33:28,545 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 662 treesize of output 599 [2022-02-10 22:33:28,556 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:33:28,557 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 556 treesize of output 524 [2022-02-10 22:33:28,570 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:33:28,571 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 470 treesize of output 414 [2022-02-10 22:33:33,535 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 22:33:33,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 22:33:33,537 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-02-10 22:33:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:33:33,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900970963] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:33:33,553 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:33:33,553 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 25] total 68 [2022-02-10 22:33:33,553 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794517713] [2022-02-10 22:33:33,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:33:33,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-02-10 22:33:33,553 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:33:33,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-02-10 22:33:33,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=4163, Unknown=109, NotChecked=0, Total=4556 [2022-02-10 22:33:33,554 INFO L87 Difference]: Start difference. First operand 16371 states and 46805 transitions. Second operand has 68 states, 68 states have (on average 6.0588235294117645) internal successors, (412), 68 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:33:38,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:33:38,588 INFO L93 Difference]: Finished difference Result 27398 states and 78372 transitions. [2022-02-10 22:33:38,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-10 22:33:38,588 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 6.0588235294117645) internal successors, (412), 68 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:33:38,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:33:38,641 INFO L225 Difference]: With dead ends: 27398 [2022-02-10 22:33:38,641 INFO L226 Difference]: Without dead ends: 27398 [2022-02-10 22:33:38,642 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 314 SyntacticMatches, 19 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2667 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1793, Invalid=9018, Unknown=109, NotChecked=0, Total=10920 [2022-02-10 22:33:38,642 INFO L934 BasicCegarLoop]: 470 mSDtfsCounter, 4325 mSDsluCounter, 8014 mSDsCounter, 0 mSdLazyCounter, 1649 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4325 SdHoareTripleChecker+Valid, 8281 SdHoareTripleChecker+Invalid, 2613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 932 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 22:33:38,642 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [4325 Valid, 8281 Invalid, 2613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1649 Invalid, 0 Unknown, 932 Unchecked, 0.8s Time] [2022-02-10 22:33:38,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27398 states. [2022-02-10 22:33:38,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27398 to 16581. [2022-02-10 22:33:38,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16581 states, 16580 states have (on average 2.8602533172496982) internal successors, (47423), 16580 states have internal predecessors, (47423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:33:38,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16581 states to 16581 states and 47423 transitions. [2022-02-10 22:33:38,964 INFO L78 Accepts]: Start accepts. Automaton has 16581 states and 47423 transitions. Word has length 177 [2022-02-10 22:33:38,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:33:38,964 INFO L470 AbstractCegarLoop]: Abstraction has 16581 states and 47423 transitions. [2022-02-10 22:33:38,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 6.0588235294117645) internal successors, (412), 68 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:33:38,965 INFO L276 IsEmpty]: Start isEmpty. Operand 16581 states and 47423 transitions. [2022-02-10 22:33:38,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:33:38,987 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:33:38,988 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:33:39,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-02-10 22:33:39,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2022-02-10 22:33:39,188 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:33:39,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:33:39,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1643415966, now seen corresponding path program 36 times [2022-02-10 22:33:39,189 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:33:39,189 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575217691] [2022-02-10 22:33:39,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:33:39,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:33:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:33:39,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:33:39,670 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:33:39,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575217691] [2022-02-10 22:33:39,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575217691] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:33:39,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391501061] [2022-02-10 22:33:39,670 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:33:39,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:33:39,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:33:39,671 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:33:39,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-10 22:33:39,843 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 22:33:39,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:33:39,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 22:33:39,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:33:39,909 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:33:40,077 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 22:33:40,077 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 22:33:40,549 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:33:40,717 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:33:40,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 22:33:40,909 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-02-10 22:33:40,909 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-02-10 22:33:41,138 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-02-10 22:33:41,138 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:33:41,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:33:41,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:33:41,903 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:33:41,903 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 54 [2022-02-10 22:33:41,907 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-02-10 22:33:41,907 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 636 treesize of output 556 [2022-02-10 22:33:41,914 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:33:41,914 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 556 treesize of output 524 [2022-02-10 22:33:41,922 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:33:41,922 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 470 treesize of output 414 [2022-02-10 22:34:08,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:34:08,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391501061] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:34:08,960 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:34:08,960 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 23] total 65 [2022-02-10 22:34:08,960 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751174164] [2022-02-10 22:34:08,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:34:08,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-10 22:34:08,961 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:34:08,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-10 22:34:08,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=3841, Unknown=79, NotChecked=0, Total=4160 [2022-02-10 22:34:08,961 INFO L87 Difference]: Start difference. First operand 16581 states and 47423 transitions. Second operand has 65 states, 65 states have (on average 6.415384615384616) internal successors, (417), 65 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:34:12,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:34:12,862 INFO L93 Difference]: Finished difference Result 23211 states and 66347 transitions. [2022-02-10 22:34:12,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-10 22:34:12,862 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 6.415384615384616) internal successors, (417), 65 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:34:12,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:34:12,907 INFO L225 Difference]: With dead ends: 23211 [2022-02-10 22:34:12,907 INFO L226 Difference]: Without dead ends: 23211 [2022-02-10 22:34:12,908 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 315 SyntacticMatches, 14 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2204 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1741, Invalid=8892, Unknown=79, NotChecked=0, Total=10712 [2022-02-10 22:34:12,908 INFO L934 BasicCegarLoop]: 456 mSDtfsCounter, 4059 mSDsluCounter, 9402 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4059 SdHoareTripleChecker+Valid, 9613 SdHoareTripleChecker+Invalid, 2901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 535 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 22:34:12,908 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [4059 Valid, 9613 Invalid, 2901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2336 Invalid, 0 Unknown, 535 Unchecked, 0.9s Time] [2022-02-10 22:34:12,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23211 states. [2022-02-10 22:34:13,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23211 to 13445. [2022-02-10 22:34:13,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13445 states, 13444 states have (on average 2.8542844391550135) internal successors, (38373), 13444 states have internal predecessors, (38373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:34:13,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13445 states to 13445 states and 38373 transitions. [2022-02-10 22:34:13,179 INFO L78 Accepts]: Start accepts. Automaton has 13445 states and 38373 transitions. Word has length 177 [2022-02-10 22:34:13,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:34:13,179 INFO L470 AbstractCegarLoop]: Abstraction has 13445 states and 38373 transitions. [2022-02-10 22:34:13,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 6.415384615384616) internal successors, (417), 65 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:34:13,179 INFO L276 IsEmpty]: Start isEmpty. Operand 13445 states and 38373 transitions. [2022-02-10 22:34:13,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:34:13,198 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:34:13,198 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:34:13,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-02-10 22:34:13,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2022-02-10 22:34:13,399 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:34:13,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:34:13,399 INFO L85 PathProgramCache]: Analyzing trace with hash -488322240, now seen corresponding path program 33 times [2022-02-10 22:34:13,399 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:34:13,399 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620304712] [2022-02-10 22:34:13,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:34:13,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:34:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:34:13,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:34:13,847 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:34:13,847 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620304712] [2022-02-10 22:34:13,847 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620304712] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:34:13,847 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:34:13,847 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-10 22:34:13,847 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116823888] [2022-02-10 22:34:13,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:34:13,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 22:34:13,847 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:34:13,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 22:34:13,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-02-10 22:34:13,848 INFO L87 Difference]: Start difference. First operand 13445 states and 38373 transitions. Second operand has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:34:15,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:34:15,167 INFO L93 Difference]: Finished difference Result 25061 states and 71769 transitions. [2022-02-10 22:34:15,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-10 22:34:15,167 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:34:15,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:34:15,215 INFO L225 Difference]: With dead ends: 25061 [2022-02-10 22:34:15,216 INFO L226 Difference]: Without dead ends: 25061 [2022-02-10 22:34:15,216 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=550, Invalid=2102, Unknown=0, NotChecked=0, Total=2652 [2022-02-10 22:34:15,216 INFO L934 BasicCegarLoop]: 414 mSDtfsCounter, 1579 mSDsluCounter, 4250 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 4560 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:34:15,216 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1579 Valid, 4560 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:34:15,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25061 states. [2022-02-10 22:34:15,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25061 to 13397. [2022-02-10 22:34:15,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13397 states, 13396 states have (on average 2.854658106897581) internal successors, (38241), 13396 states have internal predecessors, (38241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:34:15,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13397 states to 13397 states and 38241 transitions. [2022-02-10 22:34:15,527 INFO L78 Accepts]: Start accepts. Automaton has 13397 states and 38241 transitions. Word has length 177 [2022-02-10 22:34:15,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:34:15,527 INFO L470 AbstractCegarLoop]: Abstraction has 13397 states and 38241 transitions. [2022-02-10 22:34:15,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:34:15,528 INFO L276 IsEmpty]: Start isEmpty. Operand 13397 states and 38241 transitions. [2022-02-10 22:34:15,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:34:15,546 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:34:15,546 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:34:15,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-02-10 22:34:15,547 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:34:15,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:34:15,547 INFO L85 PathProgramCache]: Analyzing trace with hash -650611166, now seen corresponding path program 34 times [2022-02-10 22:34:15,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:34:15,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142502733] [2022-02-10 22:34:15,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:34:15,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:34:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:34:15,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:34:15,968 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:34:15,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142502733] [2022-02-10 22:34:15,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142502733] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:34:15,968 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:34:15,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-10 22:34:15,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965116306] [2022-02-10 22:34:15,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:34:15,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 22:34:15,968 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:34:15,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 22:34:15,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-02-10 22:34:15,969 INFO L87 Difference]: Start difference. First operand 13397 states and 38241 transitions. Second operand has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:34:17,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:34:17,068 INFO L93 Difference]: Finished difference Result 21400 states and 61500 transitions. [2022-02-10 22:34:17,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-10 22:34:17,069 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:34:17,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:34:17,107 INFO L225 Difference]: With dead ends: 21400 [2022-02-10 22:34:17,107 INFO L226 Difference]: Without dead ends: 21400 [2022-02-10 22:34:17,108 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=414, Invalid=1656, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 22:34:17,108 INFO L934 BasicCegarLoop]: 379 mSDtfsCounter, 1146 mSDsluCounter, 4175 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 4453 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:34:17,108 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1146 Valid, 4453 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:34:17,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21400 states. [2022-02-10 22:34:17,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21400 to 13373. [2022-02-10 22:34:17,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13373 states, 13372 states have (on average 2.8548459467544123) internal successors, (38175), 13372 states have internal predecessors, (38175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:34:17,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13373 states to 13373 states and 38175 transitions. [2022-02-10 22:34:17,360 INFO L78 Accepts]: Start accepts. Automaton has 13373 states and 38175 transitions. Word has length 177 [2022-02-10 22:34:17,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:34:17,360 INFO L470 AbstractCegarLoop]: Abstraction has 13373 states and 38175 transitions. [2022-02-10 22:34:17,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:34:17,360 INFO L276 IsEmpty]: Start isEmpty. Operand 13373 states and 38175 transitions. [2022-02-10 22:34:17,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:34:17,378 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:34:17,378 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:34:17,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-02-10 22:34:17,378 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:34:17,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:34:17,379 INFO L85 PathProgramCache]: Analyzing trace with hash 176651334, now seen corresponding path program 35 times [2022-02-10 22:34:17,379 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:34:17,379 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547840973] [2022-02-10 22:34:17,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:34:17,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:34:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:34:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:34:17,846 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:34:17,846 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547840973] [2022-02-10 22:34:17,846 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547840973] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:34:17,847 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:34:17,847 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-10 22:34:17,847 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547065908] [2022-02-10 22:34:17,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:34:17,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:34:17,847 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:34:17,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:34:17,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:34:17,847 INFO L87 Difference]: Start difference. First operand 13373 states and 38175 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:34:18,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:34:18,933 INFO L93 Difference]: Finished difference Result 20948 states and 60166 transitions. [2022-02-10 22:34:18,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-10 22:34:18,933 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:34:18,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:34:18,969 INFO L225 Difference]: With dead ends: 20948 [2022-02-10 22:34:18,969 INFO L226 Difference]: Without dead ends: 20948 [2022-02-10 22:34:18,969 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=458, Invalid=1798, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 22:34:18,970 INFO L934 BasicCegarLoop]: 365 mSDtfsCounter, 1314 mSDsluCounter, 3462 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 3748 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:34:18,970 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 3748 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:34:18,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20948 states. [2022-02-10 22:34:19,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20948 to 13405. [2022-02-10 22:34:19,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13405 states, 13404 states have (on average 2.8545956430916144) internal successors, (38263), 13404 states have internal predecessors, (38263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:34:19,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13405 states to 13405 states and 38263 transitions. [2022-02-10 22:34:19,213 INFO L78 Accepts]: Start accepts. Automaton has 13405 states and 38263 transitions. Word has length 177 [2022-02-10 22:34:19,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:34:19,213 INFO L470 AbstractCegarLoop]: Abstraction has 13405 states and 38263 transitions. [2022-02-10 22:34:19,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:34:19,213 INFO L276 IsEmpty]: Start isEmpty. Operand 13405 states and 38263 transitions. [2022-02-10 22:34:19,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:34:19,232 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:34:19,232 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:34:19,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-02-10 22:34:19,232 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:34:19,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:34:19,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1705294962, now seen corresponding path program 36 times [2022-02-10 22:34:19,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:34:19,232 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373992280] [2022-02-10 22:34:19,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:34:19,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:34:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:34:19,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:34:19,736 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:34:19,736 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373992280] [2022-02-10 22:34:19,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373992280] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:34:19,736 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840921629] [2022-02-10 22:34:19,736 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:34:19,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:34:19,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:34:19,749 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:34:19,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-10 22:34:19,925 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 22:34:19,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:34:19,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 62 conjunts are in the unsatisfiable core [2022-02-10 22:34:19,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:34:19,965 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:34:20,082 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-02-10 22:34:20,082 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-02-10 22:34:20,415 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 22:34:20,416 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 22:34:20,542 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:34:20,726 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:34:20,883 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-02-10 22:34:20,883 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-02-10 22:34:21,194 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:34:21,195 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2022-02-10 22:34:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:34:21,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:34:21,962 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:34:21,962 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 53 [2022-02-10 22:34:21,966 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-02-10 22:34:21,967 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 631 treesize of output 551 [2022-02-10 22:34:21,975 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:34:21,975 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 502 treesize of output 446 [2022-02-10 22:34:21,984 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:34:21,984 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 487 treesize of output 455 [2022-02-10 22:35:00,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 22:35:00,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 22:35:00,801 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2022-02-10 22:35:00,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:35:00,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840921629] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:35:00,822 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:35:00,822 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 23] total 63 [2022-02-10 22:35:00,822 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272918828] [2022-02-10 22:35:00,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:35:00,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-02-10 22:35:00,822 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:35:00,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-02-10 22:35:00,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=3605, Unknown=72, NotChecked=0, Total=3906 [2022-02-10 22:35:00,823 INFO L87 Difference]: Start difference. First operand 13405 states and 38263 transitions. Second operand has 63 states, 63 states have (on average 6.666666666666667) internal successors, (420), 63 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:08,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:35:08,416 INFO L93 Difference]: Finished difference Result 58549 states and 167862 transitions. [2022-02-10 22:35:08,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-10 22:35:08,417 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 6.666666666666667) internal successors, (420), 63 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:35:08,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:35:08,553 INFO L225 Difference]: With dead ends: 58549 [2022-02-10 22:35:08,553 INFO L226 Difference]: Without dead ends: 58549 [2022-02-10 22:35:08,555 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 324 SyntacticMatches, 12 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5905 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=3375, Invalid=17145, Unknown=72, NotChecked=0, Total=20592 [2022-02-10 22:35:08,556 INFO L934 BasicCegarLoop]: 586 mSDtfsCounter, 3953 mSDsluCounter, 17061 mSDsCounter, 0 mSdLazyCounter, 3807 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3953 SdHoareTripleChecker+Valid, 17005 SdHoareTripleChecker+Invalid, 6313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2484 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:35:08,556 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3953 Valid, 17005 Invalid, 6313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3807 Invalid, 0 Unknown, 2484 Unchecked, 1.4s Time] [2022-02-10 22:35:08,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58549 states. [2022-02-10 22:35:09,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58549 to 14729. [2022-02-10 22:35:09,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14729 states, 14728 states have (on average 2.869839760999457) internal successors, (42267), 14728 states have internal predecessors, (42267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:09,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14729 states to 14729 states and 42267 transitions. [2022-02-10 22:35:09,215 INFO L78 Accepts]: Start accepts. Automaton has 14729 states and 42267 transitions. Word has length 177 [2022-02-10 22:35:09,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:35:09,215 INFO L470 AbstractCegarLoop]: Abstraction has 14729 states and 42267 transitions. [2022-02-10 22:35:09,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 6.666666666666667) internal successors, (420), 63 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:09,215 INFO L276 IsEmpty]: Start isEmpty. Operand 14729 states and 42267 transitions. [2022-02-10 22:35:09,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:35:09,237 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:35:09,237 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:35:09,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-02-10 22:35:09,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2022-02-10 22:35:09,438 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:35:09,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:35:09,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1948013948, now seen corresponding path program 35 times [2022-02-10 22:35:09,439 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:35:09,439 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164272166] [2022-02-10 22:35:09,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:35:09,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:35:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:35:09,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:35:09,896 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:35:09,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164272166] [2022-02-10 22:35:09,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164272166] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:35:09,896 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:35:09,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-10 22:35:09,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74116358] [2022-02-10 22:35:09,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:35:09,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 22:35:09,897 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:35:09,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 22:35:09,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-02-10 22:35:09,897 INFO L87 Difference]: Start difference. First operand 14729 states and 42267 transitions. Second operand has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:11,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:35:11,019 INFO L93 Difference]: Finished difference Result 22150 states and 63750 transitions. [2022-02-10 22:35:11,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 22:35:11,020 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:35:11,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:35:11,062 INFO L225 Difference]: With dead ends: 22150 [2022-02-10 22:35:11,063 INFO L226 Difference]: Without dead ends: 22150 [2022-02-10 22:35:11,063 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=389, Invalid=1681, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 22:35:11,063 INFO L934 BasicCegarLoop]: 364 mSDtfsCounter, 1245 mSDsluCounter, 4393 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 4658 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:35:11,063 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1245 Valid, 4658 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:35:11,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22150 states. [2022-02-10 22:35:11,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22150 to 14705. [2022-02-10 22:35:11,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14705 states, 14704 states have (on average 2.867859085963003) internal successors, (42169), 14704 states have internal predecessors, (42169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:11,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14705 states to 14705 states and 42169 transitions. [2022-02-10 22:35:11,336 INFO L78 Accepts]: Start accepts. Automaton has 14705 states and 42169 transitions. Word has length 177 [2022-02-10 22:35:11,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:35:11,336 INFO L470 AbstractCegarLoop]: Abstraction has 14705 states and 42169 transitions. [2022-02-10 22:35:11,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:11,336 INFO L276 IsEmpty]: Start isEmpty. Operand 14705 states and 42169 transitions. [2022-02-10 22:35:11,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:35:11,357 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:35:11,358 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:35:11,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-02-10 22:35:11,358 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:35:11,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:35:11,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1760133858, now seen corresponding path program 37 times [2022-02-10 22:35:11,358 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:35:11,358 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34800069] [2022-02-10 22:35:11,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:35:11,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:35:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:35:11,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:35:11,814 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:35:11,814 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34800069] [2022-02-10 22:35:11,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34800069] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:35:11,814 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:35:11,814 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-10 22:35:11,814 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934787786] [2022-02-10 22:35:11,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:35:11,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:35:11,815 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:35:11,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:35:11,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:35:11,815 INFO L87 Difference]: Start difference. First operand 14705 states and 42169 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:12,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:35:12,840 INFO L93 Difference]: Finished difference Result 21598 states and 61964 transitions. [2022-02-10 22:35:12,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 22:35:12,840 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:35:12,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:35:12,877 INFO L225 Difference]: With dead ends: 21598 [2022-02-10 22:35:12,877 INFO L226 Difference]: Without dead ends: 21598 [2022-02-10 22:35:12,878 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=383, Invalid=1597, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 22:35:12,878 INFO L934 BasicCegarLoop]: 358 mSDtfsCounter, 1235 mSDsluCounter, 3759 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 4037 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:35:12,878 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1235 Valid, 4037 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:35:12,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21598 states. [2022-02-10 22:35:13,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21598 to 14269. [2022-02-10 22:35:13,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14269 states, 14268 states have (on average 2.8531679282310063) internal successors, (40709), 14268 states have internal predecessors, (40709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:13,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14269 states to 14269 states and 40709 transitions. [2022-02-10 22:35:13,140 INFO L78 Accepts]: Start accepts. Automaton has 14269 states and 40709 transitions. Word has length 177 [2022-02-10 22:35:13,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:35:13,140 INFO L470 AbstractCegarLoop]: Abstraction has 14269 states and 40709 transitions. [2022-02-10 22:35:13,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:13,140 INFO L276 IsEmpty]: Start isEmpty. Operand 14269 states and 40709 transitions. [2022-02-10 22:35:13,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:35:13,162 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:35:13,162 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:35:13,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-02-10 22:35:13,163 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:35:13,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:35:13,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1139092540, now seen corresponding path program 37 times [2022-02-10 22:35:13,163 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:35:13,163 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893641245] [2022-02-10 22:35:13,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:35:13,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:35:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:35:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:35:13,731 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:35:13,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893641245] [2022-02-10 22:35:13,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893641245] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:35:13,731 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:35:13,731 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-10 22:35:13,731 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55741613] [2022-02-10 22:35:13,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:35:13,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 22:35:13,731 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:35:13,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 22:35:13,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-02-10 22:35:13,732 INFO L87 Difference]: Start difference. First operand 14269 states and 40709 transitions. Second operand has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:14,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:35:14,719 INFO L93 Difference]: Finished difference Result 19716 states and 56516 transitions. [2022-02-10 22:35:14,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 22:35:14,719 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:35:14,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:35:14,753 INFO L225 Difference]: With dead ends: 19716 [2022-02-10 22:35:14,753 INFO L226 Difference]: Without dead ends: 19716 [2022-02-10 22:35:14,753 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=387, Invalid=1505, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 22:35:14,753 INFO L934 BasicCegarLoop]: 339 mSDtfsCounter, 1259 mSDsluCounter, 3692 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 3964 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:35:14,753 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1259 Valid, 3964 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:35:14,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19716 states. [2022-02-10 22:35:14,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19716 to 13357. [2022-02-10 22:35:14,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13357 states, 13356 states have (on average 2.8531746031746033) internal successors, (38107), 13356 states have internal predecessors, (38107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:14,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13357 states to 13357 states and 38107 transitions. [2022-02-10 22:35:14,977 INFO L78 Accepts]: Start accepts. Automaton has 13357 states and 38107 transitions. Word has length 177 [2022-02-10 22:35:14,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:35:14,977 INFO L470 AbstractCegarLoop]: Abstraction has 13357 states and 38107 transitions. [2022-02-10 22:35:14,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:14,977 INFO L276 IsEmpty]: Start isEmpty. Operand 13357 states and 38107 transitions. [2022-02-10 22:35:14,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:35:14,995 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:35:14,995 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:35:14,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-02-10 22:35:14,995 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:35:14,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:35:14,996 INFO L85 PathProgramCache]: Analyzing trace with hash -675517798, now seen corresponding path program 25 times [2022-02-10 22:35:14,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:35:14,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830404490] [2022-02-10 22:35:14,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:35:14,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:35:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:35:15,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:35:15,431 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:35:15,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830404490] [2022-02-10 22:35:15,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830404490] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:35:15,431 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:35:15,431 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-10 22:35:15,431 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479138319] [2022-02-10 22:35:15,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:35:15,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:35:15,431 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:35:15,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:35:15,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:35:15,432 INFO L87 Difference]: Start difference. First operand 13357 states and 38107 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:16,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:35:16,483 INFO L93 Difference]: Finished difference Result 18692 states and 53356 transitions. [2022-02-10 22:35:16,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 22:35:16,484 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:35:16,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:35:16,516 INFO L225 Difference]: With dead ends: 18692 [2022-02-10 22:35:16,516 INFO L226 Difference]: Without dead ends: 18692 [2022-02-10 22:35:16,517 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=428, Invalid=1642, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 22:35:16,517 INFO L934 BasicCegarLoop]: 368 mSDtfsCounter, 1262 mSDsluCounter, 3671 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 3966 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:35:16,517 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1262 Valid, 3966 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:35:16,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18692 states. [2022-02-10 22:35:16,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18692 to 11995. [2022-02-10 22:35:16,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11995 states, 11994 states have (on average 2.8294980823745206) internal successors, (33937), 11994 states have internal predecessors, (33937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:16,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11995 states to 11995 states and 33937 transitions. [2022-02-10 22:35:16,726 INFO L78 Accepts]: Start accepts. Automaton has 11995 states and 33937 transitions. Word has length 177 [2022-02-10 22:35:16,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:35:16,726 INFO L470 AbstractCegarLoop]: Abstraction has 11995 states and 33937 transitions. [2022-02-10 22:35:16,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:16,726 INFO L276 IsEmpty]: Start isEmpty. Operand 11995 states and 33937 transitions. [2022-02-10 22:35:16,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:35:16,745 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:35:16,745 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:35:16,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-02-10 22:35:16,745 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:35:16,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:35:16,745 INFO L85 PathProgramCache]: Analyzing trace with hash -2081850938, now seen corresponding path program 38 times [2022-02-10 22:35:16,745 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:35:16,745 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493366637] [2022-02-10 22:35:16,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:35:16,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:35:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:35:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:35:17,002 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:35:17,002 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493366637] [2022-02-10 22:35:17,003 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493366637] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:35:17,003 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:35:17,003 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:35:17,003 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448813339] [2022-02-10 22:35:17,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:35:17,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:35:17,003 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:35:17,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:35:17,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:35:17,003 INFO L87 Difference]: Start difference. First operand 11995 states and 33937 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:17,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:35:17,901 INFO L93 Difference]: Finished difference Result 27755 states and 79505 transitions. [2022-02-10 22:35:17,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 22:35:17,902 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:35:17,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:35:17,952 INFO L225 Difference]: With dead ends: 27755 [2022-02-10 22:35:17,952 INFO L226 Difference]: Without dead ends: 27755 [2022-02-10 22:35:17,953 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=426, Invalid=1296, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 22:35:17,953 INFO L934 BasicCegarLoop]: 422 mSDtfsCounter, 1112 mSDsluCounter, 3867 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 4201 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:35:17,953 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1112 Valid, 4201 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:35:17,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27755 states. [2022-02-10 22:35:18,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27755 to 12075. [2022-02-10 22:35:18,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12075 states, 12074 states have (on average 2.830296504886533) internal successors, (34173), 12074 states have internal predecessors, (34173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:18,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12075 states to 12075 states and 34173 transitions. [2022-02-10 22:35:18,220 INFO L78 Accepts]: Start accepts. Automaton has 12075 states and 34173 transitions. Word has length 177 [2022-02-10 22:35:18,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:35:18,220 INFO L470 AbstractCegarLoop]: Abstraction has 12075 states and 34173 transitions. [2022-02-10 22:35:18,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:18,220 INFO L276 IsEmpty]: Start isEmpty. Operand 12075 states and 34173 transitions. [2022-02-10 22:35:18,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:35:18,241 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:35:18,241 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:35:18,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-02-10 22:35:18,241 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:35:18,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:35:18,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1172680446, now seen corresponding path program 36 times [2022-02-10 22:35:18,241 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:35:18,242 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932176827] [2022-02-10 22:35:18,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:35:18,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:35:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:35:18,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:35:18,510 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:35:18,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932176827] [2022-02-10 22:35:18,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932176827] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:35:18,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158224881] [2022-02-10 22:35:18,510 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:35:18,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:35:18,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:35:18,511 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:35:18,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-10 22:35:18,684 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 22:35:18,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:35:18,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 22:35:18,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:35:19,118 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:35:19,232 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:35:19,283 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:35:19,562 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:35:19,563 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2022-02-10 22:35:19,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:35:19,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:35:21,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:35:21,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158224881] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:35:21,509 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:35:21,509 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 9] total 47 [2022-02-10 22:35:21,509 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517828501] [2022-02-10 22:35:21,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:35:21,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-10 22:35:21,510 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:35:21,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-10 22:35:21,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1961, Unknown=3, NotChecked=0, Total=2162 [2022-02-10 22:35:21,510 INFO L87 Difference]: Start difference. First operand 12075 states and 34173 transitions. Second operand has 47 states, 47 states have (on average 8.361702127659575) internal successors, (393), 47 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:24,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:35:24,094 INFO L93 Difference]: Finished difference Result 35209 states and 100939 transitions. [2022-02-10 22:35:24,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-10 22:35:24,095 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 8.361702127659575) internal successors, (393), 47 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:35:24,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:35:24,166 INFO L225 Difference]: With dead ends: 35209 [2022-02-10 22:35:24,166 INFO L226 Difference]: Without dead ends: 35209 [2022-02-10 22:35:24,167 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1716 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1664, Invalid=6705, Unknown=3, NotChecked=0, Total=8372 [2022-02-10 22:35:24,167 INFO L934 BasicCegarLoop]: 567 mSDtfsCounter, 3371 mSDsluCounter, 8000 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3371 SdHoareTripleChecker+Valid, 8410 SdHoareTripleChecker+Invalid, 2986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 711 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 22:35:24,167 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3371 Valid, 8410 Invalid, 2986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2234 Invalid, 0 Unknown, 711 Unchecked, 0.8s Time] [2022-02-10 22:35:24,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35209 states. [2022-02-10 22:35:24,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35209 to 13747. [2022-02-10 22:35:24,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13747 states, 13746 states have (on average 2.853702895387749) internal successors, (39227), 13746 states have internal predecessors, (39227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13747 states to 13747 states and 39227 transitions. [2022-02-10 22:35:24,591 INFO L78 Accepts]: Start accepts. Automaton has 13747 states and 39227 transitions. Word has length 177 [2022-02-10 22:35:24,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:35:24,592 INFO L470 AbstractCegarLoop]: Abstraction has 13747 states and 39227 transitions. [2022-02-10 22:35:24,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 8.361702127659575) internal successors, (393), 47 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:24,592 INFO L276 IsEmpty]: Start isEmpty. Operand 13747 states and 39227 transitions. [2022-02-10 22:35:24,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:35:24,612 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:35:24,612 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:35:24,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-02-10 22:35:24,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2022-02-10 22:35:24,812 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:35:24,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:35:24,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1485350192, now seen corresponding path program 37 times [2022-02-10 22:35:24,813 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:35:24,813 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812014828] [2022-02-10 22:35:24,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:35:24,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:35:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:35:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:35:25,113 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:35:25,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812014828] [2022-02-10 22:35:25,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812014828] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:35:25,114 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:35:25,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:35:25,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262000349] [2022-02-10 22:35:25,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:35:25,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:35:25,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:35:25,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:35:25,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:35:25,114 INFO L87 Difference]: Start difference. First operand 13747 states and 39227 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:25,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:35:25,670 INFO L93 Difference]: Finished difference Result 26582 states and 76352 transitions. [2022-02-10 22:35:25,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:35:25,670 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:35:25,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:35:25,720 INFO L225 Difference]: With dead ends: 26582 [2022-02-10 22:35:25,721 INFO L226 Difference]: Without dead ends: 26582 [2022-02-10 22:35:25,721 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=335, Invalid=1071, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:35:25,721 INFO L934 BasicCegarLoop]: 362 mSDtfsCounter, 1145 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:35:25,721 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1145 Valid, 2991 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:35:25,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26582 states. [2022-02-10 22:35:25,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26582 to 13779. [2022-02-10 22:35:25,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13779 states, 13778 states have (on average 2.855203948323414) internal successors, (39339), 13778 states have internal predecessors, (39339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:25,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13779 states to 13779 states and 39339 transitions. [2022-02-10 22:35:25,995 INFO L78 Accepts]: Start accepts. Automaton has 13779 states and 39339 transitions. Word has length 177 [2022-02-10 22:35:25,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:35:25,996 INFO L470 AbstractCegarLoop]: Abstraction has 13779 states and 39339 transitions. [2022-02-10 22:35:25,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:25,996 INFO L276 IsEmpty]: Start isEmpty. Operand 13779 states and 39339 transitions. [2022-02-10 22:35:26,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:35:26,015 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:35:26,015 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:35:26,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-02-10 22:35:26,015 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:35:26,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:35:26,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1756783830, now seen corresponding path program 39 times [2022-02-10 22:35:26,015 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:35:26,015 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381494224] [2022-02-10 22:35:26,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:35:26,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:35:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:35:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:35:26,321 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:35:26,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381494224] [2022-02-10 22:35:26,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381494224] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:35:26,321 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:35:26,321 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:35:26,321 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259940201] [2022-02-10 22:35:26,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:35:26,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:35:26,321 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:35:26,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:35:26,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:35:26,322 INFO L87 Difference]: Start difference. First operand 13779 states and 39339 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:26,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:35:26,881 INFO L93 Difference]: Finished difference Result 26686 states and 76646 transitions. [2022-02-10 22:35:26,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:35:26,881 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:35:26,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:35:26,935 INFO L225 Difference]: With dead ends: 26686 [2022-02-10 22:35:26,935 INFO L226 Difference]: Without dead ends: 26686 [2022-02-10 22:35:26,935 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=330, Invalid=1002, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:35:26,935 INFO L934 BasicCegarLoop]: 375 mSDtfsCounter, 954 mSDsluCounter, 2631 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 2942 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:35:26,935 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [954 Valid, 2942 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:35:26,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26686 states. [2022-02-10 22:35:27,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26686 to 13795. [2022-02-10 22:35:27,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13795 states, 13794 states have (on average 2.855081919675221) internal successors, (39383), 13794 states have internal predecessors, (39383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:27,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13795 states to 13795 states and 39383 transitions. [2022-02-10 22:35:27,294 INFO L78 Accepts]: Start accepts. Automaton has 13795 states and 39383 transitions. Word has length 177 [2022-02-10 22:35:27,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:35:27,294 INFO L470 AbstractCegarLoop]: Abstraction has 13795 states and 39383 transitions. [2022-02-10 22:35:27,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:27,294 INFO L276 IsEmpty]: Start isEmpty. Operand 13795 states and 39383 transitions. [2022-02-10 22:35:27,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:35:27,313 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:35:27,313 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:35:27,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-02-10 22:35:27,314 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:35:27,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:35:27,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1484252432, now seen corresponding path program 40 times [2022-02-10 22:35:27,314 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:35:27,314 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730859717] [2022-02-10 22:35:27,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:35:27,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:35:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:35:27,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:35:27,614 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:35:27,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730859717] [2022-02-10 22:35:27,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730859717] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:35:27,614 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:35:27,614 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:35:27,614 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159028642] [2022-02-10 22:35:27,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:35:27,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:35:27,614 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:35:27,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:35:27,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:35:27,615 INFO L87 Difference]: Start difference. First operand 13795 states and 39383 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:28,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:35:28,275 INFO L93 Difference]: Finished difference Result 27032 states and 77634 transitions. [2022-02-10 22:35:28,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:35:28,275 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:35:28,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:35:28,329 INFO L225 Difference]: With dead ends: 27032 [2022-02-10 22:35:28,329 INFO L226 Difference]: Without dead ends: 27032 [2022-02-10 22:35:28,329 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:35:28,329 INFO L934 BasicCegarLoop]: 387 mSDtfsCounter, 1001 mSDsluCounter, 3446 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 3758 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:35:28,329 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1001 Valid, 3758 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:35:28,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27032 states. [2022-02-10 22:35:28,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27032 to 13795. [2022-02-10 22:35:28,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13795 states, 13794 states have (on average 2.855081919675221) internal successors, (39383), 13794 states have internal predecessors, (39383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:28,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13795 states to 13795 states and 39383 transitions. [2022-02-10 22:35:28,630 INFO L78 Accepts]: Start accepts. Automaton has 13795 states and 39383 transitions. Word has length 177 [2022-02-10 22:35:28,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:35:28,631 INFO L470 AbstractCegarLoop]: Abstraction has 13795 states and 39383 transitions. [2022-02-10 22:35:28,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:28,631 INFO L276 IsEmpty]: Start isEmpty. Operand 13795 states and 39383 transitions. [2022-02-10 22:35:28,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:35:28,651 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:35:28,651 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:35:28,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-02-10 22:35:28,651 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:35:28,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:35:28,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1947827174, now seen corresponding path program 26 times [2022-02-10 22:35:28,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:35:28,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156920758] [2022-02-10 22:35:28,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:35:28,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:35:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:35:28,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:35:28,973 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:35:28,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156920758] [2022-02-10 22:35:28,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156920758] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:35:28,973 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:35:28,973 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:35:28,973 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249582922] [2022-02-10 22:35:28,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:35:28,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:35:28,973 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:35:28,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:35:28,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:35:28,974 INFO L87 Difference]: Start difference. First operand 13795 states and 39383 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:29,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:35:29,540 INFO L93 Difference]: Finished difference Result 26928 states and 77340 transitions. [2022-02-10 22:35:29,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:35:29,541 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:35:29,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:35:29,595 INFO L225 Difference]: With dead ends: 26928 [2022-02-10 22:35:29,595 INFO L226 Difference]: Without dead ends: 26928 [2022-02-10 22:35:29,596 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:35:29,596 INFO L934 BasicCegarLoop]: 367 mSDtfsCounter, 1208 mSDsluCounter, 2698 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:35:29,596 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1208 Valid, 3004 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:35:29,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2022-02-10 22:35:29,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 13787. [2022-02-10 22:35:29,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13787 states, 13786 states have (on average 2.853982300884956) internal successors, (39345), 13786 states have internal predecessors, (39345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:29,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13787 states to 13787 states and 39345 transitions. [2022-02-10 22:35:29,995 INFO L78 Accepts]: Start accepts. Automaton has 13787 states and 39345 transitions. Word has length 177 [2022-02-10 22:35:29,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:35:29,996 INFO L470 AbstractCegarLoop]: Abstraction has 13787 states and 39345 transitions. [2022-02-10 22:35:29,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:29,996 INFO L276 IsEmpty]: Start isEmpty. Operand 13787 states and 39345 transitions. [2022-02-10 22:35:30,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:35:30,016 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:35:30,017 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:35:30,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-02-10 22:35:30,017 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:35:30,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:35:30,017 INFO L85 PathProgramCache]: Analyzing trace with hash -150426422, now seen corresponding path program 41 times [2022-02-10 22:35:30,018 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:35:30,018 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046856505] [2022-02-10 22:35:30,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:35:30,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:35:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:35:30,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:35:30,322 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:35:30,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046856505] [2022-02-10 22:35:30,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046856505] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:35:30,322 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:35:30,322 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:35:30,322 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197375121] [2022-02-10 22:35:30,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:35:30,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:35:30,322 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:35:30,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:35:30,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:35:30,323 INFO L87 Difference]: Start difference. First operand 13787 states and 39345 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:31,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:35:31,050 INFO L93 Difference]: Finished difference Result 27424 states and 78736 transitions. [2022-02-10 22:35:31,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:35:31,051 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:35:31,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:35:31,102 INFO L225 Difference]: With dead ends: 27424 [2022-02-10 22:35:31,102 INFO L226 Difference]: Without dead ends: 27424 [2022-02-10 22:35:31,102 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1243, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 22:35:31,103 INFO L934 BasicCegarLoop]: 404 mSDtfsCounter, 974 mSDsluCounter, 3830 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 4145 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:35:31,103 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [974 Valid, 4145 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:35:31,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27424 states. [2022-02-10 22:35:31,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27424 to 13771. [2022-02-10 22:35:31,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13771 states, 13770 states have (on average 2.8541031227305735) internal successors, (39301), 13770 states have internal predecessors, (39301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:31,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13771 states to 13771 states and 39301 transitions. [2022-02-10 22:35:31,391 INFO L78 Accepts]: Start accepts. Automaton has 13771 states and 39301 transitions. Word has length 177 [2022-02-10 22:35:31,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:35:31,391 INFO L470 AbstractCegarLoop]: Abstraction has 13771 states and 39301 transitions. [2022-02-10 22:35:31,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:31,391 INFO L276 IsEmpty]: Start isEmpty. Operand 13771 states and 39301 transitions. [2022-02-10 22:35:31,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:35:31,410 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:35:31,411 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:35:31,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-02-10 22:35:31,411 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:35:31,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:35:31,411 INFO L85 PathProgramCache]: Analyzing trace with hash 144455970, now seen corresponding path program 27 times [2022-02-10 22:35:31,411 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:35:31,411 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632581336] [2022-02-10 22:35:31,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:35:31,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:35:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:35:31,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:35:31,710 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:35:31,710 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632581336] [2022-02-10 22:35:31,711 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632581336] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:35:31,711 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:35:31,711 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:35:31,711 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50987310] [2022-02-10 22:35:31,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:35:31,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:35:31,711 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:35:31,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:35:31,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:35:31,711 INFO L87 Difference]: Start difference. First operand 13771 states and 39301 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:32,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:35:32,313 INFO L93 Difference]: Finished difference Result 26992 states and 77516 transitions. [2022-02-10 22:35:32,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:35:32,314 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:35:32,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:35:32,365 INFO L225 Difference]: With dead ends: 26992 [2022-02-10 22:35:32,366 INFO L226 Difference]: Without dead ends: 26992 [2022-02-10 22:35:32,366 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=388, Invalid=1172, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 22:35:32,366 INFO L934 BasicCegarLoop]: 391 mSDtfsCounter, 1182 mSDsluCounter, 2502 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 2836 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:35:32,366 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1182 Valid, 2836 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:35:32,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26992 states. [2022-02-10 22:35:32,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26992 to 13787. [2022-02-10 22:35:32,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13787 states, 13786 states have (on average 2.853982300884956) internal successors, (39345), 13786 states have internal predecessors, (39345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:32,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13787 states to 13787 states and 39345 transitions. [2022-02-10 22:35:32,766 INFO L78 Accepts]: Start accepts. Automaton has 13787 states and 39345 transitions. Word has length 177 [2022-02-10 22:35:32,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:35:32,766 INFO L470 AbstractCegarLoop]: Abstraction has 13787 states and 39345 transitions. [2022-02-10 22:35:32,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:32,766 INFO L276 IsEmpty]: Start isEmpty. Operand 13787 states and 39345 transitions. [2022-02-10 22:35:32,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:35:32,786 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:35:32,786 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:35:32,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-02-10 22:35:32,786 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:35:32,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:35:32,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1949907452, now seen corresponding path program 28 times [2022-02-10 22:35:32,787 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:35:32,787 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385669566] [2022-02-10 22:35:32,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:35:32,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:35:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:35:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:35:33,072 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:35:33,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385669566] [2022-02-10 22:35:33,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385669566] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:35:33,072 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:35:33,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:35:33,073 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866964393] [2022-02-10 22:35:33,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:35:33,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:35:33,073 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:35:33,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:35:33,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:35:33,073 INFO L87 Difference]: Start difference. First operand 13787 states and 39345 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:33,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:35:33,753 INFO L93 Difference]: Finished difference Result 27856 states and 79988 transitions. [2022-02-10 22:35:33,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 22:35:33,754 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:35:33,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:35:33,809 INFO L225 Difference]: With dead ends: 27856 [2022-02-10 22:35:33,809 INFO L226 Difference]: Without dead ends: 27856 [2022-02-10 22:35:33,809 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 22:35:33,810 INFO L934 BasicCegarLoop]: 427 mSDtfsCounter, 862 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 3509 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:35:33,810 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 3509 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:35:33,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27856 states. [2022-02-10 22:35:34,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27856 to 13731. [2022-02-10 22:35:34,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13731 states, 13730 states have (on average 2.8526584122359795) internal successors, (39167), 13730 states have internal predecessors, (39167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:34,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13731 states to 13731 states and 39167 transitions. [2022-02-10 22:35:34,111 INFO L78 Accepts]: Start accepts. Automaton has 13731 states and 39167 transitions. Word has length 177 [2022-02-10 22:35:34,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:35:34,111 INFO L470 AbstractCegarLoop]: Abstraction has 13731 states and 39167 transitions. [2022-02-10 22:35:34,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:34,112 INFO L276 IsEmpty]: Start isEmpty. Operand 13731 states and 39167 transitions. [2022-02-10 22:35:34,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:35:34,131 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:35:34,131 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:35:34,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-02-10 22:35:34,131 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:35:34,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:35:34,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1878945178, now seen corresponding path program 38 times [2022-02-10 22:35:34,131 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:35:34,132 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817583969] [2022-02-10 22:35:34,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:35:34,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:35:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:35:34,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:35:34,436 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:35:34,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817583969] [2022-02-10 22:35:34,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817583969] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:35:34,437 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:35:34,437 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:35:34,437 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347152420] [2022-02-10 22:35:34,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:35:34,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:35:34,437 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:35:34,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:35:34,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:35:34,437 INFO L87 Difference]: Start difference. First operand 13731 states and 39167 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:35,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:35:35,103 INFO L93 Difference]: Finished difference Result 27238 states and 78360 transitions. [2022-02-10 22:35:35,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:35:35,104 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:35:35,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:35:35,160 INFO L225 Difference]: With dead ends: 27238 [2022-02-10 22:35:35,160 INFO L226 Difference]: Without dead ends: 27238 [2022-02-10 22:35:35,160 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=402, Invalid=1238, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 22:35:35,161 INFO L934 BasicCegarLoop]: 359 mSDtfsCounter, 1039 mSDsluCounter, 2741 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 3035 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:35:35,161 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 3035 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:35:35,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27238 states. [2022-02-10 22:35:35,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27238 to 13747. [2022-02-10 22:35:35,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13747 states, 13746 states have (on average 2.8531209079004802) internal successors, (39219), 13746 states have internal predecessors, (39219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:35,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13747 states to 13747 states and 39219 transitions. [2022-02-10 22:35:35,508 INFO L78 Accepts]: Start accepts. Automaton has 13747 states and 39219 transitions. Word has length 177 [2022-02-10 22:35:35,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:35:35,508 INFO L470 AbstractCegarLoop]: Abstraction has 13747 states and 39219 transitions. [2022-02-10 22:35:35,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:35,508 INFO L276 IsEmpty]: Start isEmpty. Operand 13747 states and 39219 transitions. [2022-02-10 22:35:35,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:35:35,528 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:35:35,528 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:35:35,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-02-10 22:35:35,528 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:35:35,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:35:35,529 INFO L85 PathProgramCache]: Analyzing trace with hash -220399678, now seen corresponding path program 42 times [2022-02-10 22:35:35,529 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:35:35,529 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861533602] [2022-02-10 22:35:35,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:35:35,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:35:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:35:35,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:35:35,822 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:35:35,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861533602] [2022-02-10 22:35:35,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861533602] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:35:35,822 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:35:35,822 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:35:35,822 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198036121] [2022-02-10 22:35:35,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:35:35,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:35:35,822 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:35:35,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:35:35,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:35:35,823 INFO L87 Difference]: Start difference. First operand 13747 states and 39219 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:36,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:35:36,451 INFO L93 Difference]: Finished difference Result 27028 states and 77678 transitions. [2022-02-10 22:35:36,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:35:36,451 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:35:36,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:35:36,505 INFO L225 Difference]: With dead ends: 27028 [2022-02-10 22:35:36,505 INFO L226 Difference]: Without dead ends: 27028 [2022-02-10 22:35:36,505 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=395, Invalid=1165, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 22:35:36,505 INFO L934 BasicCegarLoop]: 359 mSDtfsCounter, 1332 mSDsluCounter, 2616 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 2903 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:35:36,505 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1332 Valid, 2903 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:35:36,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27028 states. [2022-02-10 22:35:36,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27028 to 13779. [2022-02-10 22:35:36,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13779 states, 13778 states have (on average 2.8528814051386266) internal successors, (39307), 13778 states have internal predecessors, (39307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13779 states to 13779 states and 39307 transitions. [2022-02-10 22:35:36,815 INFO L78 Accepts]: Start accepts. Automaton has 13779 states and 39307 transitions. Word has length 177 [2022-02-10 22:35:36,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:35:36,815 INFO L470 AbstractCegarLoop]: Abstraction has 13779 states and 39307 transitions. [2022-02-10 22:35:36,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:35:36,816 INFO L276 IsEmpty]: Start isEmpty. Operand 13779 states and 39307 transitions. [2022-02-10 22:35:36,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:35:36,837 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:35:36,837 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:35:36,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-02-10 22:35:36,837 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:35:36,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:35:36,837 INFO L85 PathProgramCache]: Analyzing trace with hash 186274222, now seen corresponding path program 43 times [2022-02-10 22:35:36,837 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:35:36,837 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951809120] [2022-02-10 22:35:36,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:35:36,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:35:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:35:37,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:35:37,132 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:35:37,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951809120] [2022-02-10 22:35:37,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951809120] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:35:37,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806263159] [2022-02-10 22:35:37,132 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:35:37,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:35:37,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:35:37,133 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:35:37,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-10 22:35:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:35:37,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 55 conjunts are in the unsatisfiable core [2022-02-10 22:35:37,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:35:37,341 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:35:37,453 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-02-10 22:35:37,453 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-02-10 22:35:37,679 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 22:35:37,679 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 22:35:37,759 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:35:37,871 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:35:37,912 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:35:38,353 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-02-10 22:35:38,353 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-02-10 22:35:38,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:35:38,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:35:40,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:35:40,012 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806263159] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:35:40,012 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:35:40,012 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27, 12] total 54 [2022-02-10 22:35:40,012 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36556982] [2022-02-10 22:35:40,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:35:40,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-10 22:35:40,012 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:35:40,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-10 22:35:40,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=2588, Unknown=2, NotChecked=0, Total=2862 [2022-02-10 22:35:40,013 INFO L87 Difference]: Start difference. First operand 13779 states and 39307 transitions. Second operand has 54 states, 54 states have (on average 7.407407407407407) internal successors, (400), 54 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:03,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:03,716 INFO L93 Difference]: Finished difference Result 61764 states and 177257 transitions. [2022-02-10 22:36:03,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-02-10 22:36:03,716 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 7.407407407407407) internal successors, (400), 54 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:03,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:03,942 INFO L225 Difference]: With dead ends: 61764 [2022-02-10 22:36:03,942 INFO L226 Difference]: Without dead ends: 61764 [2022-02-10 22:36:03,943 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7401 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=4355, Invalid=21370, Unknown=35, NotChecked=0, Total=25760 [2022-02-10 22:36:03,943 INFO L934 BasicCegarLoop]: 573 mSDtfsCounter, 5175 mSDsluCounter, 12382 mSDsCounter, 0 mSdLazyCounter, 4426 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5175 SdHoareTripleChecker+Valid, 12637 SdHoareTripleChecker+Invalid, 5187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 4426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 704 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:03,943 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [5175 Valid, 12637 Invalid, 5187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 4426 Invalid, 0 Unknown, 704 Unchecked, 1.8s Time] [2022-02-10 22:36:04,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61764 states. [2022-02-10 22:36:04,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61764 to 15555. [2022-02-10 22:36:04,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15555 states, 15554 states have (on average 2.864665037932365) internal successors, (44557), 15554 states have internal predecessors, (44557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:04,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15555 states to 15555 states and 44557 transitions. [2022-02-10 22:36:04,449 INFO L78 Accepts]: Start accepts. Automaton has 15555 states and 44557 transitions. Word has length 177 [2022-02-10 22:36:04,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:04,450 INFO L470 AbstractCegarLoop]: Abstraction has 15555 states and 44557 transitions. [2022-02-10 22:36:04,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 7.407407407407407) internal successors, (400), 54 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:04,450 INFO L276 IsEmpty]: Start isEmpty. Operand 15555 states and 44557 transitions. [2022-02-10 22:36:04,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:04,471 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:04,471 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:04,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-10 22:36:04,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2022-02-10 22:36:04,672 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:04,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:04,672 INFO L85 PathProgramCache]: Analyzing trace with hash -577479552, now seen corresponding path program 39 times [2022-02-10 22:36:04,672 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:04,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012483812] [2022-02-10 22:36:04,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:04,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:04,983 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:04,983 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012483812] [2022-02-10 22:36:04,983 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012483812] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:36:04,983 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:36:04,983 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:36:04,983 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974776885] [2022-02-10 22:36:04,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:36:04,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:36:04,983 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:04,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:36:04,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:36:04,984 INFO L87 Difference]: Start difference. First operand 15555 states and 44557 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:05,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:05,642 INFO L93 Difference]: Finished difference Result 29090 states and 83782 transitions. [2022-02-10 22:36:05,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:36:05,642 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:05,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:05,696 INFO L225 Difference]: With dead ends: 29090 [2022-02-10 22:36:05,696 INFO L226 Difference]: Without dead ends: 29090 [2022-02-10 22:36:05,697 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:36:05,697 INFO L934 BasicCegarLoop]: 362 mSDtfsCounter, 1108 mSDsluCounter, 2984 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 3276 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:05,697 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1108 Valid, 3276 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:36:05,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29090 states. [2022-02-10 22:36:05,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29090 to 15579. [2022-02-10 22:36:05,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15579 states, 15578 states have (on average 2.866542560020542) internal successors, (44655), 15578 states have internal predecessors, (44655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:06,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15579 states to 15579 states and 44655 transitions. [2022-02-10 22:36:06,005 INFO L78 Accepts]: Start accepts. Automaton has 15579 states and 44655 transitions. Word has length 177 [2022-02-10 22:36:06,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:06,006 INFO L470 AbstractCegarLoop]: Abstraction has 15579 states and 44655 transitions. [2022-02-10 22:36:06,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:06,006 INFO L276 IsEmpty]: Start isEmpty. Operand 15579 states and 44655 transitions. [2022-02-10 22:36:06,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:06,202 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:06,202 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:06,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-02-10 22:36:06,202 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:06,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:06,203 INFO L85 PathProgramCache]: Analyzing trace with hash -2104393114, now seen corresponding path program 38 times [2022-02-10 22:36:06,203 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:06,203 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040699714] [2022-02-10 22:36:06,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:06,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:06,624 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:06,624 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040699714] [2022-02-10 22:36:06,624 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040699714] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:36:06,624 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:36:06,625 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:36:06,625 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104924765] [2022-02-10 22:36:06,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:36:06,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:36:06,625 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:06,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:36:06,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:36:06,625 INFO L87 Difference]: Start difference. First operand 15579 states and 44655 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:07,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:07,349 INFO L93 Difference]: Finished difference Result 29282 states and 84326 transitions. [2022-02-10 22:36:07,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:36:07,349 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:07,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:07,405 INFO L225 Difference]: With dead ends: 29282 [2022-02-10 22:36:07,405 INFO L226 Difference]: Without dead ends: 29282 [2022-02-10 22:36:07,405 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:36:07,405 INFO L934 BasicCegarLoop]: 361 mSDtfsCounter, 1034 mSDsluCounter, 3334 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 3613 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:07,406 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1034 Valid, 3613 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:36:07,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29282 states. [2022-02-10 22:36:07,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29282 to 15579. [2022-02-10 22:36:07,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15579 states, 15578 states have (on average 2.8655154705353705) internal successors, (44639), 15578 states have internal predecessors, (44639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:07,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15579 states to 15579 states and 44639 transitions. [2022-02-10 22:36:07,777 INFO L78 Accepts]: Start accepts. Automaton has 15579 states and 44639 transitions. Word has length 177 [2022-02-10 22:36:07,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:07,777 INFO L470 AbstractCegarLoop]: Abstraction has 15579 states and 44639 transitions. [2022-02-10 22:36:07,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:07,777 INFO L276 IsEmpty]: Start isEmpty. Operand 15579 states and 44639 transitions. [2022-02-10 22:36:07,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:07,798 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:07,798 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:07,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-02-10 22:36:07,798 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:07,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:07,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1902844224, now seen corresponding path program 44 times [2022-02-10 22:36:07,798 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:07,798 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830355820] [2022-02-10 22:36:07,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:07,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:08,101 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:08,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830355820] [2022-02-10 22:36:08,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830355820] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:36:08,101 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:36:08,101 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:36:08,101 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362487740] [2022-02-10 22:36:08,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:36:08,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:36:08,139 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:08,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:36:08,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:36:08,140 INFO L87 Difference]: Start difference. First operand 15579 states and 44639 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:08,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:08,748 INFO L93 Difference]: Finished difference Result 29326 states and 84448 transitions. [2022-02-10 22:36:08,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:36:08,748 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:08,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:08,802 INFO L225 Difference]: With dead ends: 29326 [2022-02-10 22:36:08,802 INFO L226 Difference]: Without dead ends: 29326 [2022-02-10 22:36:08,802 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:36:08,802 INFO L934 BasicCegarLoop]: 368 mSDtfsCounter, 877 mSDsluCounter, 2859 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:08,802 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [877 Valid, 3167 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:36:08,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29326 states. [2022-02-10 22:36:09,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29326 to 15571. [2022-02-10 22:36:09,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15571 states, 15570 states have (on average 2.8655748233782914) internal successors, (44617), 15570 states have internal predecessors, (44617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:09,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15571 states to 15571 states and 44617 transitions. [2022-02-10 22:36:09,126 INFO L78 Accepts]: Start accepts. Automaton has 15571 states and 44617 transitions. Word has length 177 [2022-02-10 22:36:09,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:09,126 INFO L470 AbstractCegarLoop]: Abstraction has 15571 states and 44617 transitions. [2022-02-10 22:36:09,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:09,127 INFO L276 IsEmpty]: Start isEmpty. Operand 15571 states and 44617 transitions. [2022-02-10 22:36:09,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:09,148 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:09,148 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:09,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-02-10 22:36:09,148 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:09,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:09,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1439269482, now seen corresponding path program 29 times [2022-02-10 22:36:09,149 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:09,149 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925465989] [2022-02-10 22:36:09,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:09,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:09,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:09,446 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:09,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925465989] [2022-02-10 22:36:09,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925465989] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:36:09,446 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:36:09,446 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:36:09,446 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628619263] [2022-02-10 22:36:09,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:36:09,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:36:09,446 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:09,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:36:09,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:36:09,447 INFO L87 Difference]: Start difference. First operand 15571 states and 44617 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:10,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:10,163 INFO L93 Difference]: Finished difference Result 29222 states and 84154 transitions. [2022-02-10 22:36:10,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:36:10,164 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:10,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:10,218 INFO L225 Difference]: With dead ends: 29222 [2022-02-10 22:36:10,218 INFO L226 Difference]: Without dead ends: 29222 [2022-02-10 22:36:10,218 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:36:10,218 INFO L934 BasicCegarLoop]: 368 mSDtfsCounter, 1280 mSDsluCounter, 3091 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 3391 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:10,218 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1280 Valid, 3391 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:36:10,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29222 states. [2022-02-10 22:36:10,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29222 to 15547. [2022-02-10 22:36:10,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15547 states, 15546 states have (on average 2.8642094429435225) internal successors, (44527), 15546 states have internal predecessors, (44527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:10,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15547 states to 15547 states and 44527 transitions. [2022-02-10 22:36:10,540 INFO L78 Accepts]: Start accepts. Automaton has 15547 states and 44527 transitions. Word has length 177 [2022-02-10 22:36:10,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:10,540 INFO L470 AbstractCegarLoop]: Abstraction has 15547 states and 44527 transitions. [2022-02-10 22:36:10,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:10,540 INFO L276 IsEmpty]: Start isEmpty. Operand 15547 states and 44527 transitions. [2022-02-10 22:36:10,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:10,562 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:10,562 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:10,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-02-10 22:36:10,562 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:10,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:10,563 INFO L85 PathProgramCache]: Analyzing trace with hash 2041566512, now seen corresponding path program 40 times [2022-02-10 22:36:10,563 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:10,563 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807697970] [2022-02-10 22:36:10,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:10,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:10,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:10,864 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:10,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807697970] [2022-02-10 22:36:10,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807697970] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:36:10,864 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:36:10,864 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:36:10,864 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202925851] [2022-02-10 22:36:10,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:36:10,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:36:10,864 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:10,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:36:10,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:36:10,865 INFO L87 Difference]: Start difference. First operand 15547 states and 44527 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:11,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:11,553 INFO L93 Difference]: Finished difference Result 29042 states and 83586 transitions. [2022-02-10 22:36:11,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:36:11,554 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:11,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:11,610 INFO L225 Difference]: With dead ends: 29042 [2022-02-10 22:36:11,610 INFO L226 Difference]: Without dead ends: 29042 [2022-02-10 22:36:11,610 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=359, Invalid=1123, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:36:11,610 INFO L934 BasicCegarLoop]: 364 mSDtfsCounter, 990 mSDsluCounter, 2774 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:11,611 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [990 Valid, 3073 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:36:11,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29042 states. [2022-02-10 22:36:12,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29042 to 15563. [2022-02-10 22:36:12,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15563 states, 15562 states have (on average 2.8651201645032773) internal successors, (44587), 15562 states have internal predecessors, (44587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:12,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15563 states to 15563 states and 44587 transitions. [2022-02-10 22:36:12,077 INFO L78 Accepts]: Start accepts. Automaton has 15563 states and 44587 transitions. Word has length 177 [2022-02-10 22:36:12,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:12,077 INFO L470 AbstractCegarLoop]: Abstraction has 15563 states and 44587 transitions. [2022-02-10 22:36:12,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:12,077 INFO L276 IsEmpty]: Start isEmpty. Operand 15563 states and 44587 transitions. [2022-02-10 22:36:12,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:12,100 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:12,100 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:12,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-02-10 22:36:12,100 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:12,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:12,100 INFO L85 PathProgramCache]: Analyzing trace with hash 514652950, now seen corresponding path program 39 times [2022-02-10 22:36:12,100 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:12,100 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76801035] [2022-02-10 22:36:12,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:12,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:12,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:12,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:12,423 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:12,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76801035] [2022-02-10 22:36:12,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76801035] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:36:12,423 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:36:12,423 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:36:12,423 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072643525] [2022-02-10 22:36:12,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:36:12,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:36:12,423 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:12,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:36:12,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:36:12,423 INFO L87 Difference]: Start difference. First operand 15563 states and 44587 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:13,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:13,072 INFO L93 Difference]: Finished difference Result 29186 states and 83974 transitions. [2022-02-10 22:36:13,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:36:13,072 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:13,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:13,124 INFO L225 Difference]: With dead ends: 29186 [2022-02-10 22:36:13,124 INFO L226 Difference]: Without dead ends: 29186 [2022-02-10 22:36:13,124 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=353, Invalid=1053, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:36:13,124 INFO L934 BasicCegarLoop]: 363 mSDtfsCounter, 1191 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 2633 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:13,125 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1191 Valid, 2633 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:36:13,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29186 states. [2022-02-10 22:36:13,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29186 to 15563. [2022-02-10 22:36:13,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15563 states, 15562 states have (on average 2.8635779462793987) internal successors, (44563), 15562 states have internal predecessors, (44563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:13,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15563 states to 15563 states and 44563 transitions. [2022-02-10 22:36:13,418 INFO L78 Accepts]: Start accepts. Automaton has 15563 states and 44563 transitions. Word has length 177 [2022-02-10 22:36:13,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:13,418 INFO L470 AbstractCegarLoop]: Abstraction has 15563 states and 44563 transitions. [2022-02-10 22:36:13,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:13,418 INFO L276 IsEmpty]: Start isEmpty. Operand 15563 states and 44563 transitions. [2022-02-10 22:36:13,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:13,440 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:13,440 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:13,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2022-02-10 22:36:13,440 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:13,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:13,440 INFO L85 PathProgramCache]: Analyzing trace with hash 716201840, now seen corresponding path program 45 times [2022-02-10 22:36:13,440 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:13,440 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139819838] [2022-02-10 22:36:13,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:13,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:13,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:13,805 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:13,805 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139819838] [2022-02-10 22:36:13,805 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139819838] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:36:13,805 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:36:13,805 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:36:13,805 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124990311] [2022-02-10 22:36:13,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:36:13,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:36:13,806 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:13,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:36:13,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:36:13,806 INFO L87 Difference]: Start difference. First operand 15563 states and 44563 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:14,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:14,391 INFO L93 Difference]: Finished difference Result 29238 states and 84110 transitions. [2022-02-10 22:36:14,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:36:14,391 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:14,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:14,447 INFO L225 Difference]: With dead ends: 29238 [2022-02-10 22:36:14,447 INFO L226 Difference]: Without dead ends: 29238 [2022-02-10 22:36:14,448 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:36:14,448 INFO L934 BasicCegarLoop]: 372 mSDtfsCounter, 1150 mSDsluCounter, 2513 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 2832 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:14,448 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1150 Valid, 2832 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:36:14,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29238 states. [2022-02-10 22:36:14,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29238 to 15563. [2022-02-10 22:36:14,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15563 states, 15562 states have (on average 2.8635779462793987) internal successors, (44563), 15562 states have internal predecessors, (44563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:14,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15563 states to 15563 states and 44563 transitions. [2022-02-10 22:36:14,827 INFO L78 Accepts]: Start accepts. Automaton has 15563 states and 44563 transitions. Word has length 177 [2022-02-10 22:36:14,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:14,827 INFO L470 AbstractCegarLoop]: Abstraction has 15563 states and 44563 transitions. [2022-02-10 22:36:14,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:14,827 INFO L276 IsEmpty]: Start isEmpty. Operand 15563 states and 44563 transitions. [2022-02-10 22:36:14,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:14,849 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:14,849 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:14,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2022-02-10 22:36:14,849 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:14,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:14,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1179776582, now seen corresponding path program 30 times [2022-02-10 22:36:14,850 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:14,850 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871269431] [2022-02-10 22:36:14,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:14,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:15,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:15,179 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:15,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871269431] [2022-02-10 22:36:15,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871269431] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:36:15,179 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:36:15,180 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:36:15,180 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975757149] [2022-02-10 22:36:15,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:36:15,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:36:15,180 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:15,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:36:15,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:36:15,180 INFO L87 Difference]: Start difference. First operand 15563 states and 44563 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:15,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:15,801 INFO L93 Difference]: Finished difference Result 29142 states and 83838 transitions. [2022-02-10 22:36:15,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:36:15,802 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:15,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:15,940 INFO L225 Difference]: With dead ends: 29142 [2022-02-10 22:36:15,940 INFO L226 Difference]: Without dead ends: 29142 [2022-02-10 22:36:15,941 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=350, Invalid=1056, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:36:15,941 INFO L934 BasicCegarLoop]: 352 mSDtfsCounter, 878 mSDsluCounter, 2465 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 2767 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:15,941 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [878 Valid, 2767 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:36:15,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29142 states. [2022-02-10 22:36:16,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29142 to 15555. [2022-02-10 22:36:16,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15555 states, 15554 states have (on average 2.8626076893403627) internal successors, (44525), 15554 states have internal predecessors, (44525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:16,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15555 states to 15555 states and 44525 transitions. [2022-02-10 22:36:16,265 INFO L78 Accepts]: Start accepts. Automaton has 15555 states and 44525 transitions. Word has length 177 [2022-02-10 22:36:16,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:16,265 INFO L470 AbstractCegarLoop]: Abstraction has 15555 states and 44525 transitions. [2022-02-10 22:36:16,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:16,265 INFO L276 IsEmpty]: Start isEmpty. Operand 15555 states and 44525 transitions. [2022-02-10 22:36:16,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:16,286 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:16,286 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:16,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-02-10 22:36:16,287 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:16,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:16,287 INFO L85 PathProgramCache]: Analyzing trace with hash -918477014, now seen corresponding path program 46 times [2022-02-10 22:36:16,287 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:16,287 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836213896] [2022-02-10 22:36:16,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:16,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:16,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:16,593 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:16,594 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836213896] [2022-02-10 22:36:16,594 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836213896] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:36:16,594 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:36:16,594 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:36:16,594 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358356228] [2022-02-10 22:36:16,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:36:16,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:36:16,594 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:16,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:36:16,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:36:16,594 INFO L87 Difference]: Start difference. First operand 15555 states and 44525 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:17,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:17,311 INFO L93 Difference]: Finished difference Result 29574 states and 85042 transitions. [2022-02-10 22:36:17,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:36:17,312 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:17,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:17,366 INFO L225 Difference]: With dead ends: 29574 [2022-02-10 22:36:17,366 INFO L226 Difference]: Without dead ends: 29574 [2022-02-10 22:36:17,366 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1243, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 22:36:17,367 INFO L934 BasicCegarLoop]: 385 mSDtfsCounter, 1074 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 3394 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:17,367 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1074 Valid, 3394 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:36:17,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29574 states. [2022-02-10 22:36:17,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29574 to 15539. [2022-02-10 22:36:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15539 states, 15538 states have (on average 2.8627236452567897) internal successors, (44481), 15538 states have internal predecessors, (44481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:17,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15539 states to 15539 states and 44481 transitions. [2022-02-10 22:36:17,743 INFO L78 Accepts]: Start accepts. Automaton has 15539 states and 44481 transitions. Word has length 177 [2022-02-10 22:36:17,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:17,743 INFO L470 AbstractCegarLoop]: Abstraction has 15539 states and 44481 transitions. [2022-02-10 22:36:17,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:17,743 INFO L276 IsEmpty]: Start isEmpty. Operand 15539 states and 44481 transitions. [2022-02-10 22:36:17,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:17,765 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:17,765 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:17,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-02-10 22:36:17,765 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:17,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:17,765 INFO L85 PathProgramCache]: Analyzing trace with hash -623594622, now seen corresponding path program 31 times [2022-02-10 22:36:17,765 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:17,765 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234072394] [2022-02-10 22:36:17,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:17,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:18,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:18,062 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:18,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234072394] [2022-02-10 22:36:18,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234072394] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:36:18,062 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:36:18,062 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:36:18,063 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152327105] [2022-02-10 22:36:18,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:36:18,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:36:18,063 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:18,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:36:18,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:36:18,063 INFO L87 Difference]: Start difference. First operand 15539 states and 44481 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:18,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:18,674 INFO L93 Difference]: Finished difference Result 29150 states and 83844 transitions. [2022-02-10 22:36:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:36:18,675 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:18,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:18,728 INFO L225 Difference]: With dead ends: 29150 [2022-02-10 22:36:18,728 INFO L226 Difference]: Without dead ends: 29150 [2022-02-10 22:36:18,728 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=388, Invalid=1172, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 22:36:18,728 INFO L934 BasicCegarLoop]: 372 mSDtfsCounter, 963 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:18,728 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [963 Valid, 2790 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:36:18,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29150 states. [2022-02-10 22:36:19,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29150 to 15555. [2022-02-10 22:36:19,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15555 states, 15554 states have (on average 2.8626076893403627) internal successors, (44525), 15554 states have internal predecessors, (44525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:19,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15555 states to 15555 states and 44525 transitions. [2022-02-10 22:36:19,152 INFO L78 Accepts]: Start accepts. Automaton has 15555 states and 44525 transitions. Word has length 177 [2022-02-10 22:36:19,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:19,152 INFO L470 AbstractCegarLoop]: Abstraction has 15555 states and 44525 transitions. [2022-02-10 22:36:19,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:19,153 INFO L276 IsEmpty]: Start isEmpty. Operand 15555 states and 44525 transitions. [2022-02-10 22:36:19,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:19,174 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:19,174 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:19,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-02-10 22:36:19,174 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:19,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:19,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1577009252, now seen corresponding path program 32 times [2022-02-10 22:36:19,175 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:19,175 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800058070] [2022-02-10 22:36:19,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:19,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:19,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:19,478 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:19,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800058070] [2022-02-10 22:36:19,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800058070] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:36:19,478 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:36:19,478 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:36:19,478 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204751190] [2022-02-10 22:36:19,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:36:19,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:36:19,478 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:19,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:36:19,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:36:19,479 INFO L87 Difference]: Start difference. First operand 15555 states and 44525 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:20,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:20,260 INFO L93 Difference]: Finished difference Result 30014 states and 86316 transitions. [2022-02-10 22:36:20,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 22:36:20,260 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:20,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:20,319 INFO L225 Difference]: With dead ends: 30014 [2022-02-10 22:36:20,320 INFO L226 Difference]: Without dead ends: 30014 [2022-02-10 22:36:20,320 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 22:36:20,320 INFO L934 BasicCegarLoop]: 388 mSDtfsCounter, 885 mSDsluCounter, 3261 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 3589 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:20,320 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 3589 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:36:20,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30014 states. [2022-02-10 22:36:20,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30014 to 15491. [2022-02-10 22:36:20,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15491 states, 15490 states have (on average 2.862556488056811) internal successors, (44341), 15490 states have internal predecessors, (44341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:20,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15491 states to 15491 states and 44341 transitions. [2022-02-10 22:36:20,652 INFO L78 Accepts]: Start accepts. Automaton has 15491 states and 44341 transitions. Word has length 177 [2022-02-10 22:36:20,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:20,652 INFO L470 AbstractCegarLoop]: Abstraction has 15491 states and 44341 transitions. [2022-02-10 22:36:20,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:20,652 INFO L276 IsEmpty]: Start isEmpty. Operand 15491 states and 44341 transitions. [2022-02-10 22:36:20,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:20,674 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:20,714 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:20,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-02-10 22:36:20,714 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:20,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:20,715 INFO L85 PathProgramCache]: Analyzing trace with hash -529344920, now seen corresponding path program 47 times [2022-02-10 22:36:20,715 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:20,715 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587036235] [2022-02-10 22:36:20,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:20,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:21,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:21,003 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:21,003 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587036235] [2022-02-10 22:36:21,003 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587036235] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:36:21,003 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868868637] [2022-02-10 22:36:21,003 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:36:21,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:36:21,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:36:21,004 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:36:21,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-10 22:36:21,188 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:36:21,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:36:21,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 74 conjunts are in the unsatisfiable core [2022-02-10 22:36:21,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:36:21,230 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:36:21,245 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-02-10 22:36:21,246 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-02-10 22:36:21,359 INFO L353 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-02-10 22:36:21,359 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-02-10 22:36:21,475 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:36:21,808 INFO L353 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-02-10 22:36:21,808 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 25 [2022-02-10 22:36:21,944 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:36:22,160 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:36:22,244 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:36:22,855 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 22:36:22,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 18 [2022-02-10 22:36:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:36:22,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:36:23,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:23,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868868637] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:36:23,388 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:36:23,389 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 28, 12] total 56 [2022-02-10 22:36:23,389 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238122585] [2022-02-10 22:36:23,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:36:23,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-10 22:36:23,389 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:23,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-10 22:36:23,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=2762, Unknown=0, NotChecked=0, Total=3080 [2022-02-10 22:36:23,390 INFO L87 Difference]: Start difference. First operand 15491 states and 44341 transitions. Second operand has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:28,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:28,503 INFO L93 Difference]: Finished difference Result 41556 states and 119428 transitions. [2022-02-10 22:36:28,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-10 22:36:28,503 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:28,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:28,582 INFO L225 Difference]: With dead ends: 41556 [2022-02-10 22:36:28,582 INFO L226 Difference]: Without dead ends: 41556 [2022-02-10 22:36:28,583 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3139 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2501, Invalid=10839, Unknown=0, NotChecked=0, Total=13340 [2022-02-10 22:36:28,583 INFO L934 BasicCegarLoop]: 640 mSDtfsCounter, 3306 mSDsluCounter, 12849 mSDsCounter, 0 mSdLazyCounter, 4457 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3306 SdHoareTripleChecker+Valid, 13153 SdHoareTripleChecker+Invalid, 4548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:28,583 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3306 Valid, 13153 Invalid, 4548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 4457 Invalid, 0 Unknown, 24 Unchecked, 1.7s Time] [2022-02-10 22:36:28,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41556 states. [2022-02-10 22:36:28,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41556 to 15325. [2022-02-10 22:36:28,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15325 states, 15324 states have (on average 2.865896632732968) internal successors, (43917), 15324 states have internal predecessors, (43917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:29,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15325 states to 15325 states and 43917 transitions. [2022-02-10 22:36:29,008 INFO L78 Accepts]: Start accepts. Automaton has 15325 states and 43917 transitions. Word has length 177 [2022-02-10 22:36:29,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:29,008 INFO L470 AbstractCegarLoop]: Abstraction has 15325 states and 43917 transitions. [2022-02-10 22:36:29,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:29,008 INFO L276 IsEmpty]: Start isEmpty. Operand 15325 states and 43917 transitions. [2022-02-10 22:36:29,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:29,031 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:29,031 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:29,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-02-10 22:36:29,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:36:29,231 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:29,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:29,232 INFO L85 PathProgramCache]: Analyzing trace with hash 2110443726, now seen corresponding path program 41 times [2022-02-10 22:36:29,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:29,232 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703601157] [2022-02-10 22:36:29,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:29,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:29,531 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:29,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703601157] [2022-02-10 22:36:29,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703601157] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:36:29,531 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:36:29,531 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:36:29,531 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050903638] [2022-02-10 22:36:29,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:36:29,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:36:29,531 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:29,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:36:29,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:36:29,532 INFO L87 Difference]: Start difference. First operand 15325 states and 43917 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:30,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:30,269 INFO L93 Difference]: Finished difference Result 28170 states and 80948 transitions. [2022-02-10 22:36:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 22:36:30,270 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:30,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:30,323 INFO L225 Difference]: With dead ends: 28170 [2022-02-10 22:36:30,323 INFO L226 Difference]: Without dead ends: 28170 [2022-02-10 22:36:30,324 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 22:36:30,324 INFO L934 BasicCegarLoop]: 434 mSDtfsCounter, 1144 mSDsluCounter, 3278 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 3642 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:30,324 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1144 Valid, 3642 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:36:30,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28170 states. [2022-02-10 22:36:30,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28170 to 15277. [2022-02-10 22:36:30,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15277 states, 15276 states have (on average 2.8662608012568733) internal successors, (43785), 15276 states have internal predecessors, (43785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:30,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15277 states to 15277 states and 43785 transitions. [2022-02-10 22:36:30,630 INFO L78 Accepts]: Start accepts. Automaton has 15277 states and 43785 transitions. Word has length 177 [2022-02-10 22:36:30,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:30,630 INFO L470 AbstractCegarLoop]: Abstraction has 15277 states and 43785 transitions. [2022-02-10 22:36:30,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:30,630 INFO L276 IsEmpty]: Start isEmpty. Operand 15277 states and 43785 transitions. [2022-02-10 22:36:30,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:30,651 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:30,652 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:30,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-02-10 22:36:30,652 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:30,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:30,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1312300756, now seen corresponding path program 42 times [2022-02-10 22:36:30,652 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:30,652 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20632079] [2022-02-10 22:36:30,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:30,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:30,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:30,955 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:30,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20632079] [2022-02-10 22:36:30,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20632079] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:36:30,956 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:36:30,956 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:36:30,956 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119103141] [2022-02-10 22:36:30,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:36:30,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:36:30,956 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:30,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:36:30,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:36:30,956 INFO L87 Difference]: Start difference. First operand 15277 states and 43785 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:31,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:31,617 INFO L93 Difference]: Finished difference Result 28558 states and 82212 transitions. [2022-02-10 22:36:31,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:36:31,618 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:31,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:31,673 INFO L225 Difference]: With dead ends: 28558 [2022-02-10 22:36:31,673 INFO L226 Difference]: Without dead ends: 28558 [2022-02-10 22:36:31,674 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=398, Invalid=1242, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 22:36:31,674 INFO L934 BasicCegarLoop]: 399 mSDtfsCounter, 1318 mSDsluCounter, 2972 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 3309 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:31,674 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1318 Valid, 3309 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:36:31,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28558 states. [2022-02-10 22:36:32,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28558 to 15285. [2022-02-10 22:36:32,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15285 states, 15284 states have (on average 2.8667233708453286) internal successors, (43815), 15284 states have internal predecessors, (43815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:32,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15285 states to 15285 states and 43815 transitions. [2022-02-10 22:36:32,064 INFO L78 Accepts]: Start accepts. Automaton has 15285 states and 43815 transitions. Word has length 177 [2022-02-10 22:36:32,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:32,064 INFO L470 AbstractCegarLoop]: Abstraction has 15285 states and 43815 transitions. [2022-02-10 22:36:32,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:32,064 INFO L276 IsEmpty]: Start isEmpty. Operand 15285 states and 43815 transitions. [2022-02-10 22:36:32,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:32,086 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:32,086 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:32,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-02-10 22:36:32,086 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:32,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:32,087 INFO L85 PathProgramCache]: Analyzing trace with hash 883321684, now seen corresponding path program 48 times [2022-02-10 22:36:32,087 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:32,087 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898784174] [2022-02-10 22:36:32,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:32,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:32,381 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:32,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898784174] [2022-02-10 22:36:32,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898784174] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:36:32,381 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:36:32,381 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:36:32,381 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756430802] [2022-02-10 22:36:32,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:36:32,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:36:32,381 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:32,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:36:32,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:36:32,382 INFO L87 Difference]: Start difference. First operand 15285 states and 43815 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:33,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:33,070 INFO L93 Difference]: Finished difference Result 28230 states and 81210 transitions. [2022-02-10 22:36:33,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:36:33,070 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:33,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:33,125 INFO L225 Difference]: With dead ends: 28230 [2022-02-10 22:36:33,125 INFO L226 Difference]: Without dead ends: 28230 [2022-02-10 22:36:33,126 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=391, Invalid=1169, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 22:36:33,126 INFO L934 BasicCegarLoop]: 385 mSDtfsCounter, 1032 mSDsluCounter, 3474 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 3790 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:33,126 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1032 Valid, 3790 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:36:33,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28230 states. [2022-02-10 22:36:33,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28230 to 15317. [2022-02-10 22:36:33,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15317 states, 15316 states have (on average 2.8664794985635935) internal successors, (43903), 15316 states have internal predecessors, (43903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:33,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15317 states to 15317 states and 43903 transitions. [2022-02-10 22:36:33,419 INFO L78 Accepts]: Start accepts. Automaton has 15317 states and 43903 transitions. Word has length 177 [2022-02-10 22:36:33,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:33,419 INFO L470 AbstractCegarLoop]: Abstraction has 15317 states and 43903 transitions. [2022-02-10 22:36:33,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:33,419 INFO L276 IsEmpty]: Start isEmpty. Operand 15317 states and 43903 transitions. [2022-02-10 22:36:33,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:33,439 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:33,440 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:33,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-02-10 22:36:33,440 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:33,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:33,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1289995584, now seen corresponding path program 49 times [2022-02-10 22:36:33,440 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:33,440 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504167239] [2022-02-10 22:36:33,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:33,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:33,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:33,758 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:33,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504167239] [2022-02-10 22:36:33,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504167239] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:36:33,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379735377] [2022-02-10 22:36:33,758 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:36:33,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:36:33,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:36:33,759 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:36:33,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-10 22:36:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:33,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 55 conjunts are in the unsatisfiable core [2022-02-10 22:36:33,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:36:34,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:36:34,131 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-02-10 22:36:34,131 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-02-10 22:36:34,359 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 22:36:34,360 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 22:36:34,442 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:36:34,562 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:36:34,602 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:36:35,025 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-02-10 22:36:35,026 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-02-10 22:36:35,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:36:35,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:36:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:37,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379735377] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:36:37,150 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:36:37,150 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27, 12] total 54 [2022-02-10 22:36:37,150 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525453793] [2022-02-10 22:36:37,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:36:37,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-10 22:36:37,150 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:37,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-10 22:36:37,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=2588, Unknown=3, NotChecked=0, Total=2862 [2022-02-10 22:36:37,151 INFO L87 Difference]: Start difference. First operand 15317 states and 43903 transitions. Second operand has 54 states, 54 states have (on average 7.407407407407407) internal successors, (400), 54 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:42,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:42,718 INFO L93 Difference]: Finished difference Result 40775 states and 117073 transitions. [2022-02-10 22:36:42,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-10 22:36:42,719 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 7.407407407407407) internal successors, (400), 54 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:42,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:42,795 INFO L225 Difference]: With dead ends: 40775 [2022-02-10 22:36:42,795 INFO L226 Difference]: Without dead ends: 40775 [2022-02-10 22:36:42,795 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3289 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=2831, Invalid=11446, Unknown=3, NotChecked=0, Total=14280 [2022-02-10 22:36:42,796 INFO L934 BasicCegarLoop]: 685 mSDtfsCounter, 3208 mSDsluCounter, 13704 mSDsCounter, 0 mSdLazyCounter, 4182 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3208 SdHoareTripleChecker+Valid, 14008 SdHoareTripleChecker+Invalid, 5109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 4182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 855 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:42,796 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3208 Valid, 14008 Invalid, 5109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 4182 Invalid, 0 Unknown, 855 Unchecked, 1.5s Time] [2022-02-10 22:36:42,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40775 states. [2022-02-10 22:36:43,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40775 to 15754. [2022-02-10 22:36:43,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15754 states, 15753 states have (on average 2.8696756173427285) internal successors, (45206), 15753 states have internal predecessors, (45206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:43,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15754 states to 15754 states and 45206 transitions. [2022-02-10 22:36:43,221 INFO L78 Accepts]: Start accepts. Automaton has 15754 states and 45206 transitions. Word has length 177 [2022-02-10 22:36:43,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:43,221 INFO L470 AbstractCegarLoop]: Abstraction has 15754 states and 45206 transitions. [2022-02-10 22:36:43,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 7.407407407407407) internal successors, (400), 54 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:43,221 INFO L276 IsEmpty]: Start isEmpty. Operand 15754 states and 45206 transitions. [2022-02-10 22:36:43,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:43,245 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:43,245 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:43,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-02-10 22:36:43,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:36:43,446 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:43,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:43,446 INFO L85 PathProgramCache]: Analyzing trace with hash 526241810, now seen corresponding path program 43 times [2022-02-10 22:36:43,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:43,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97679949] [2022-02-10 22:36:43,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:43,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:43,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:43,750 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:43,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97679949] [2022-02-10 22:36:43,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97679949] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:36:43,750 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:36:43,750 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:36:43,750 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104672916] [2022-02-10 22:36:43,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:36:43,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:36:43,751 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:43,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:36:43,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:36:43,751 INFO L87 Difference]: Start difference. First operand 15754 states and 45206 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:44,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:44,389 INFO L93 Difference]: Finished difference Result 27280 states and 78188 transitions. [2022-02-10 22:36:44,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:36:44,390 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:44,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:44,443 INFO L225 Difference]: With dead ends: 27280 [2022-02-10 22:36:44,443 INFO L226 Difference]: Without dead ends: 27280 [2022-02-10 22:36:44,444 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:36:44,444 INFO L934 BasicCegarLoop]: 384 mSDtfsCounter, 1031 mSDsluCounter, 3344 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 3660 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:44,444 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 3660 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:36:44,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27280 states. [2022-02-10 22:36:44,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27280 to 15770. [2022-02-10 22:36:44,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15770 states, 15769 states have (on average 2.8705688375927454) internal successors, (45266), 15769 states have internal predecessors, (45266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:44,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15770 states to 15770 states and 45266 transitions. [2022-02-10 22:36:44,765 INFO L78 Accepts]: Start accepts. Automaton has 15770 states and 45266 transitions. Word has length 177 [2022-02-10 22:36:44,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:44,765 INFO L470 AbstractCegarLoop]: Abstraction has 15770 states and 45266 transitions. [2022-02-10 22:36:44,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:44,766 INFO L276 IsEmpty]: Start isEmpty. Operand 15770 states and 45266 transitions. [2022-02-10 22:36:44,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:44,789 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:44,789 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:44,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-02-10 22:36:44,789 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:44,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:44,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1000671752, now seen corresponding path program 40 times [2022-02-10 22:36:44,789 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:44,789 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003691729] [2022-02-10 22:36:44,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:44,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:45,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:45,128 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:45,128 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003691729] [2022-02-10 22:36:45,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003691729] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:36:45,129 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:36:45,129 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:36:45,129 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711572538] [2022-02-10 22:36:45,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:36:45,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:36:45,129 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:45,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:36:45,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:36:45,129 INFO L87 Difference]: Start difference. First operand 15770 states and 45266 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:45,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:45,657 INFO L93 Difference]: Finished difference Result 27258 states and 78140 transitions. [2022-02-10 22:36:45,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:36:45,657 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:45,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:45,712 INFO L225 Difference]: With dead ends: 27258 [2022-02-10 22:36:45,712 INFO L226 Difference]: Without dead ends: 27258 [2022-02-10 22:36:45,712 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=326, Invalid=1006, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:36:45,713 INFO L934 BasicCegarLoop]: 383 mSDtfsCounter, 1040 mSDsluCounter, 2229 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 2563 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:45,713 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 2563 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 22:36:45,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27258 states. [2022-02-10 22:36:45,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27258 to 15778. [2022-02-10 22:36:45,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15778 states, 15777 states have (on average 2.8705077010838562) internal successors, (45288), 15777 states have internal predecessors, (45288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:46,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15778 states to 15778 states and 45288 transitions. [2022-02-10 22:36:46,026 INFO L78 Accepts]: Start accepts. Automaton has 15778 states and 45288 transitions. Word has length 177 [2022-02-10 22:36:46,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:46,026 INFO L470 AbstractCegarLoop]: Abstraction has 15778 states and 45288 transitions. [2022-02-10 22:36:46,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:46,026 INFO L276 IsEmpty]: Start isEmpty. Operand 15778 states and 45288 transitions. [2022-02-10 22:36:46,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:46,049 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:46,049 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:46,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2022-02-10 22:36:46,049 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:46,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:46,049 INFO L85 PathProgramCache]: Analyzing trace with hash -799122862, now seen corresponding path program 50 times [2022-02-10 22:36:46,049 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:46,049 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766991998] [2022-02-10 22:36:46,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:46,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:46,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:46,359 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:46,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766991998] [2022-02-10 22:36:46,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766991998] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:36:46,359 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:36:46,359 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:36:46,359 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31179222] [2022-02-10 22:36:46,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:36:46,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:36:46,359 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:46,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:36:46,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:36:46,360 INFO L87 Difference]: Start difference. First operand 15778 states and 45288 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:46,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:46,923 INFO L93 Difference]: Finished difference Result 27684 states and 79348 transitions. [2022-02-10 22:36:46,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 22:36:46,924 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:46,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:46,978 INFO L225 Difference]: With dead ends: 27684 [2022-02-10 22:36:46,979 INFO L226 Difference]: Without dead ends: 27684 [2022-02-10 22:36:46,979 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=313, Invalid=1019, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:36:46,979 INFO L934 BasicCegarLoop]: 390 mSDtfsCounter, 811 mSDsluCounter, 3042 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 3378 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:46,979 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 3378 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:36:47,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27684 states. [2022-02-10 22:36:47,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27684 to 15770. [2022-02-10 22:36:47,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15770 states, 15769 states have (on average 2.8705688375927454) internal successors, (45266), 15769 states have internal predecessors, (45266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:47,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15770 states to 15770 states and 45266 transitions. [2022-02-10 22:36:47,303 INFO L78 Accepts]: Start accepts. Automaton has 15770 states and 45266 transitions. Word has length 177 [2022-02-10 22:36:47,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:47,303 INFO L470 AbstractCegarLoop]: Abstraction has 15770 states and 45266 transitions. [2022-02-10 22:36:47,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:47,303 INFO L276 IsEmpty]: Start isEmpty. Operand 15770 states and 45266 transitions. [2022-02-10 22:36:47,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:47,326 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:47,326 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:47,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2022-02-10 22:36:47,326 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:47,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:47,327 INFO L85 PathProgramCache]: Analyzing trace with hash -335548120, now seen corresponding path program 33 times [2022-02-10 22:36:47,327 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:47,327 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027291413] [2022-02-10 22:36:47,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:47,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:47,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:47,633 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:47,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027291413] [2022-02-10 22:36:47,633 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027291413] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:36:47,633 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:36:47,633 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:36:47,633 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646255922] [2022-02-10 22:36:47,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:36:47,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:36:47,633 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:47,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:36:47,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:36:47,633 INFO L87 Difference]: Start difference. First operand 15770 states and 45266 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:48,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:48,262 INFO L93 Difference]: Finished difference Result 27452 states and 78694 transitions. [2022-02-10 22:36:48,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 22:36:48,262 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:48,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:48,311 INFO L225 Difference]: With dead ends: 27452 [2022-02-10 22:36:48,312 INFO L226 Difference]: Without dead ends: 27452 [2022-02-10 22:36:48,312 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=307, Invalid=953, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 22:36:48,312 INFO L934 BasicCegarLoop]: 369 mSDtfsCounter, 873 mSDsluCounter, 2598 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 2927 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:48,312 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 2927 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:36:48,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27452 states. [2022-02-10 22:36:48,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27452 to 15778. [2022-02-10 22:36:48,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15778 states, 15777 states have (on average 2.8689864993344742) internal successors, (45264), 15777 states have internal predecessors, (45264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:48,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15778 states to 15778 states and 45264 transitions. [2022-02-10 22:36:48,598 INFO L78 Accepts]: Start accepts. Automaton has 15778 states and 45264 transitions. Word has length 177 [2022-02-10 22:36:48,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:48,598 INFO L470 AbstractCegarLoop]: Abstraction has 15778 states and 45264 transitions. [2022-02-10 22:36:48,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:48,598 INFO L276 IsEmpty]: Start isEmpty. Operand 15778 states and 45264 transitions. [2022-02-10 22:36:48,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:48,620 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:48,621 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:48,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2022-02-10 22:36:48,621 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:48,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:48,621 INFO L85 PathProgramCache]: Analyzing trace with hash -827001996, now seen corresponding path program 41 times [2022-02-10 22:36:48,621 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:48,621 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565084262] [2022-02-10 22:36:48,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:48,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:48,919 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:48,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565084262] [2022-02-10 22:36:48,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565084262] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:36:48,919 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:36:48,919 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:36:48,919 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872043476] [2022-02-10 22:36:48,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:36:48,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:36:48,920 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:48,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:36:48,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:36:48,920 INFO L87 Difference]: Start difference. First operand 15778 states and 45264 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:49,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:49,590 INFO L93 Difference]: Finished difference Result 27218 states and 77998 transitions. [2022-02-10 22:36:49,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 22:36:49,590 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:49,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:49,640 INFO L225 Difference]: With dead ends: 27218 [2022-02-10 22:36:49,640 INFO L226 Difference]: Without dead ends: 27218 [2022-02-10 22:36:49,641 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=436, Invalid=1286, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 22:36:49,641 INFO L934 BasicCegarLoop]: 402 mSDtfsCounter, 1088 mSDsluCounter, 2992 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 3337 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:49,641 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1088 Valid, 3337 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:36:49,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27218 states. [2022-02-10 22:36:49,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27218 to 15842. [2022-02-10 22:36:49,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15842 states, 15841 states have (on average 2.8685057761504957) internal successors, (45440), 15841 states have internal predecessors, (45440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:49,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15842 states to 15842 states and 45440 transitions. [2022-02-10 22:36:49,933 INFO L78 Accepts]: Start accepts. Automaton has 15842 states and 45440 transitions. Word has length 177 [2022-02-10 22:36:49,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:49,933 INFO L470 AbstractCegarLoop]: Abstraction has 15842 states and 45440 transitions. [2022-02-10 22:36:49,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:49,933 INFO L276 IsEmpty]: Start isEmpty. Operand 15842 states and 45440 transitions. [2022-02-10 22:36:49,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:49,955 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:49,955 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:49,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2022-02-10 22:36:49,955 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:49,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:49,956 INFO L85 PathProgramCache]: Analyzing trace with hash 415868256, now seen corresponding path program 42 times [2022-02-10 22:36:49,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:49,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982167471] [2022-02-10 22:36:49,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:49,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:50,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:50,245 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:50,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982167471] [2022-02-10 22:36:50,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982167471] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:36:50,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733444140] [2022-02-10 22:36:50,245 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:36:50,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:36:50,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:36:50,246 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:36:50,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-10 22:36:50,441 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 22:36:50,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:36:50,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 62 conjunts are in the unsatisfiable core [2022-02-10 22:36:50,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:36:50,588 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:36:50,678 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:36:50,924 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 22:36:50,924 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 22:36:51,043 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:36:51,221 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:36:51,282 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:36:51,555 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:36:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:36:51,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:36:51,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:51,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733444140] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:36:51,942 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:36:51,942 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 9] total 49 [2022-02-10 22:36:51,942 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338793725] [2022-02-10 22:36:51,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:36:51,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-10 22:36:51,943 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:51,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-10 22:36:51,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2151, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 22:36:51,943 INFO L87 Difference]: Start difference. First operand 15842 states and 45440 transitions. Second operand has 49 states, 49 states have (on average 7.795918367346939) internal successors, (382), 49 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:56,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:56,356 INFO L93 Difference]: Finished difference Result 32256 states and 92338 transitions. [2022-02-10 22:36:56,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-10 22:36:56,356 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 7.795918367346939) internal successors, (382), 49 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:56,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:56,419 INFO L225 Difference]: With dead ends: 32256 [2022-02-10 22:36:56,419 INFO L226 Difference]: Without dead ends: 32256 [2022-02-10 22:36:56,420 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1731 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1664, Invalid=7078, Unknown=0, NotChecked=0, Total=8742 [2022-02-10 22:36:56,420 INFO L934 BasicCegarLoop]: 479 mSDtfsCounter, 2807 mSDsluCounter, 9143 mSDsCounter, 0 mSdLazyCounter, 2581 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2807 SdHoareTripleChecker+Valid, 9404 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 470 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:56,420 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2807 Valid, 9404 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2581 Invalid, 0 Unknown, 470 Unchecked, 1.1s Time] [2022-02-10 22:36:56,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32256 states. [2022-02-10 22:36:56,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32256 to 15814. [2022-02-10 22:36:56,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15814 states, 15813 states have (on average 2.8702965914121292) internal successors, (45388), 15813 states have internal predecessors, (45388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:56,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15814 states to 15814 states and 45388 transitions. [2022-02-10 22:36:56,796 INFO L78 Accepts]: Start accepts. Automaton has 15814 states and 45388 transitions. Word has length 177 [2022-02-10 22:36:56,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:56,796 INFO L470 AbstractCegarLoop]: Abstraction has 15814 states and 45388 transitions. [2022-02-10 22:36:56,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 7.795918367346939) internal successors, (382), 49 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:56,796 INFO L276 IsEmpty]: Start isEmpty. Operand 15814 states and 45388 transitions. [2022-02-10 22:36:56,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:56,818 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:56,818 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:56,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-02-10 22:36:57,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2022-02-10 22:36:57,018 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:57,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:57,019 INFO L85 PathProgramCache]: Analyzing trace with hash 462627316, now seen corresponding path program 44 times [2022-02-10 22:36:57,019 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:57,019 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380215189] [2022-02-10 22:36:57,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:57,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:57,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:57,322 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:57,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380215189] [2022-02-10 22:36:57,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380215189] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:36:57,322 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:36:57,322 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:36:57,322 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152378697] [2022-02-10 22:36:57,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:36:57,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:36:57,323 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:57,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:36:57,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:36:57,323 INFO L87 Difference]: Start difference. First operand 15814 states and 45388 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:57,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:57,988 INFO L93 Difference]: Finished difference Result 27670 states and 79422 transitions. [2022-02-10 22:36:57,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:36:57,988 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:57,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:58,041 INFO L225 Difference]: With dead ends: 27670 [2022-02-10 22:36:58,042 INFO L226 Difference]: Without dead ends: 27670 [2022-02-10 22:36:58,042 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=398, Invalid=1242, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 22:36:58,042 INFO L934 BasicCegarLoop]: 381 mSDtfsCounter, 1152 mSDsluCounter, 2724 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 3035 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:58,042 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1152 Valid, 3035 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:36:58,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27670 states. [2022-02-10 22:36:58,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27670 to 15790. [2022-02-10 22:36:58,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15790 states, 15789 states have (on average 2.870479447716765) internal successors, (45322), 15789 states have internal predecessors, (45322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:58,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15790 states to 15790 states and 45322 transitions. [2022-02-10 22:36:58,358 INFO L78 Accepts]: Start accepts. Automaton has 15790 states and 45322 transitions. Word has length 177 [2022-02-10 22:36:58,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:58,358 INFO L470 AbstractCegarLoop]: Abstraction has 15790 states and 45322 transitions. [2022-02-10 22:36:58,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:58,358 INFO L276 IsEmpty]: Start isEmpty. Operand 15790 states and 45322 transitions. [2022-02-10 22:36:58,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:58,380 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:58,380 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:58,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2022-02-10 22:36:58,380 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:58,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:58,381 INFO L85 PathProgramCache]: Analyzing trace with hash -2110797828, now seen corresponding path program 43 times [2022-02-10 22:36:58,381 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:58,381 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421469682] [2022-02-10 22:36:58,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:58,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:36:58,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:36:58,724 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:36:58,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421469682] [2022-02-10 22:36:58,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421469682] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:36:58,724 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:36:58,724 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:36:58,724 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486300771] [2022-02-10 22:36:58,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:36:58,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:36:58,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:36:58,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:36:58,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:36:58,725 INFO L87 Difference]: Start difference. First operand 15790 states and 45322 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:59,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:36:59,373 INFO L93 Difference]: Finished difference Result 27382 states and 78538 transitions. [2022-02-10 22:36:59,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:36:59,373 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:36:59,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:36:59,430 INFO L225 Difference]: With dead ends: 27382 [2022-02-10 22:36:59,431 INFO L226 Difference]: Without dead ends: 27382 [2022-02-10 22:36:59,431 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=391, Invalid=1169, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 22:36:59,431 INFO L934 BasicCegarLoop]: 368 mSDtfsCounter, 1132 mSDsluCounter, 2771 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:36:59,431 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 3073 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:36:59,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27382 states. [2022-02-10 22:36:59,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27382 to 15822. [2022-02-10 22:36:59,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15822 states, 15821 states have (on average 2.8702357625940205) internal successors, (45410), 15821 states have internal predecessors, (45410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15822 states to 15822 states and 45410 transitions. [2022-02-10 22:36:59,735 INFO L78 Accepts]: Start accepts. Automaton has 15822 states and 45410 transitions. Word has length 177 [2022-02-10 22:36:59,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:36:59,735 INFO L470 AbstractCegarLoop]: Abstraction has 15822 states and 45410 transitions. [2022-02-10 22:36:59,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:36:59,736 INFO L276 IsEmpty]: Start isEmpty. Operand 15822 states and 45410 transitions. [2022-02-10 22:36:59,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:36:59,758 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:36:59,758 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:36:59,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2022-02-10 22:36:59,758 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:36:59,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:36:59,758 INFO L85 PathProgramCache]: Analyzing trace with hash -867927576, now seen corresponding path program 44 times [2022-02-10 22:36:59,759 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:36:59,759 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155021327] [2022-02-10 22:36:59,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:36:59,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:36:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:00,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:00,048 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:00,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155021327] [2022-02-10 22:37:00,049 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155021327] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:37:00,049 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695859442] [2022-02-10 22:37:00,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:37:00,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:37:00,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:37:00,050 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:37:00,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-10 22:37:00,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:37:00,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:37:00,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 62 conjunts are in the unsatisfiable core [2022-02-10 22:37:00,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:37:00,376 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:37:00,468 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:37:00,708 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 22:37:00,708 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 22:37:00,828 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:37:01,003 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:37:01,064 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:37:01,373 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:37:01,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:37:01,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:37:01,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:01,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695859442] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:37:01,764 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:37:01,764 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 9] total 49 [2022-02-10 22:37:01,764 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566653537] [2022-02-10 22:37:01,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:37:01,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-10 22:37:01,765 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:01,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-10 22:37:01,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2148, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 22:37:01,765 INFO L87 Difference]: Start difference. First operand 15822 states and 45410 transitions. Second operand has 49 states, 49 states have (on average 7.795918367346939) internal successors, (382), 49 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:07,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:07,653 INFO L93 Difference]: Finished difference Result 30147 states and 86341 transitions. [2022-02-10 22:37:07,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-10 22:37:07,653 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 7.795918367346939) internal successors, (382), 49 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:07,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:07,721 INFO L225 Difference]: With dead ends: 30147 [2022-02-10 22:37:07,721 INFO L226 Difference]: Without dead ends: 30147 [2022-02-10 22:37:07,723 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 340 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 2285 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2339, Invalid=8791, Unknown=0, NotChecked=0, Total=11130 [2022-02-10 22:37:07,723 INFO L934 BasicCegarLoop]: 439 mSDtfsCounter, 2646 mSDsluCounter, 8384 mSDsCounter, 0 mSdLazyCounter, 2809 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2646 SdHoareTripleChecker+Valid, 8647 SdHoareTripleChecker+Invalid, 3400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 550 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:07,723 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2646 Valid, 8647 Invalid, 3400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2809 Invalid, 0 Unknown, 550 Unchecked, 1.1s Time] [2022-02-10 22:37:07,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30147 states. [2022-02-10 22:37:08,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30147 to 15856. [2022-02-10 22:37:08,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15856 states, 15855 states have (on average 2.8700094607379376) internal successors, (45504), 15855 states have internal predecessors, (45504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:08,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15856 states to 15856 states and 45504 transitions. [2022-02-10 22:37:08,139 INFO L78 Accepts]: Start accepts. Automaton has 15856 states and 45504 transitions. Word has length 177 [2022-02-10 22:37:08,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:08,139 INFO L470 AbstractCegarLoop]: Abstraction has 15856 states and 45504 transitions. [2022-02-10 22:37:08,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 7.795918367346939) internal successors, (382), 49 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:08,139 INFO L276 IsEmpty]: Start isEmpty. Operand 15856 states and 45504 transitions. [2022-02-10 22:37:08,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:08,161 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:08,161 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:08,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-02-10 22:37:08,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2022-02-10 22:37:08,362 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:08,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:08,363 INFO L85 PathProgramCache]: Analyzing trace with hash -208334656, now seen corresponding path program 45 times [2022-02-10 22:37:08,363 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:08,363 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763198623] [2022-02-10 22:37:08,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:08,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:08,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:08,651 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:08,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763198623] [2022-02-10 22:37:08,651 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763198623] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:37:08,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422640586] [2022-02-10 22:37:08,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:37:08,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:37:08,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:37:08,653 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:37:08,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-10 22:37:08,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 22:37:08,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:37:08,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 62 conjunts are in the unsatisfiable core [2022-02-10 22:37:08,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:37:08,979 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:37:09,071 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:37:09,310 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 22:37:09,311 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 22:37:09,432 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:37:09,610 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:37:09,668 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:37:10,012 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:37:10,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:37:10,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:37:10,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:10,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422640586] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:37:10,417 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:37:10,417 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 9] total 49 [2022-02-10 22:37:10,417 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114474790] [2022-02-10 22:37:10,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:37:10,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-10 22:37:10,417 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:10,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-10 22:37:10,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2148, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 22:37:10,418 INFO L87 Difference]: Start difference. First operand 15856 states and 45504 transitions. Second operand has 49 states, 49 states have (on average 7.8979591836734695) internal successors, (387), 49 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:14,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:14,868 INFO L93 Difference]: Finished difference Result 30043 states and 86181 transitions. [2022-02-10 22:37:14,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-10 22:37:14,869 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 7.8979591836734695) internal successors, (387), 49 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:14,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:14,925 INFO L225 Difference]: With dead ends: 30043 [2022-02-10 22:37:14,926 INFO L226 Difference]: Without dead ends: 30043 [2022-02-10 22:37:14,927 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1715 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1721, Invalid=7209, Unknown=0, NotChecked=0, Total=8930 [2022-02-10 22:37:14,927 INFO L934 BasicCegarLoop]: 457 mSDtfsCounter, 2692 mSDsluCounter, 8022 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2692 SdHoareTripleChecker+Valid, 8304 SdHoareTripleChecker+Invalid, 3203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 757 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:14,927 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2692 Valid, 8304 Invalid, 3203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2406 Invalid, 0 Unknown, 757 Unchecked, 0.9s Time] [2022-02-10 22:37:14,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30043 states. [2022-02-10 22:37:15,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30043 to 16246. [2022-02-10 22:37:15,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16246 states, 16245 states have (on average 2.8707910126192675) internal successors, (46636), 16245 states have internal predecessors, (46636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:15,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16246 states to 16246 states and 46636 transitions. [2022-02-10 22:37:15,270 INFO L78 Accepts]: Start accepts. Automaton has 16246 states and 46636 transitions. Word has length 177 [2022-02-10 22:37:15,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:15,270 INFO L470 AbstractCegarLoop]: Abstraction has 16246 states and 46636 transitions. [2022-02-10 22:37:15,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 7.8979591836734695) internal successors, (387), 49 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:15,270 INFO L276 IsEmpty]: Start isEmpty. Operand 16246 states and 46636 transitions. [2022-02-10 22:37:15,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:15,293 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:15,293 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:15,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-02-10 22:37:15,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable203 [2022-02-10 22:37:15,494 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:15,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:15,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1993797414, now seen corresponding path program 45 times [2022-02-10 22:37:15,495 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:15,495 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123803997] [2022-02-10 22:37:15,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:15,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:15,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:15,805 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:15,806 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123803997] [2022-02-10 22:37:15,806 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123803997] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:15,806 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:15,806 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:37:15,806 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179140164] [2022-02-10 22:37:15,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:15,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:37:15,806 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:15,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:37:15,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:37:15,806 INFO L87 Difference]: Start difference. First operand 16246 states and 46636 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:16,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:16,429 INFO L93 Difference]: Finished difference Result 27820 states and 79790 transitions. [2022-02-10 22:37:16,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:37:16,429 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:16,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:16,486 INFO L225 Difference]: With dead ends: 27820 [2022-02-10 22:37:16,486 INFO L226 Difference]: Without dead ends: 27820 [2022-02-10 22:37:16,486 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=359, Invalid=1123, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:37:16,486 INFO L934 BasicCegarLoop]: 367 mSDtfsCounter, 1245 mSDsluCounter, 2848 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:16,487 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1245 Valid, 3155 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:37:16,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27820 states. [2022-02-10 22:37:16,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27820 to 16262. [2022-02-10 22:37:16,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16262 states, 16261 states have (on average 2.87165610971035) internal successors, (46696), 16261 states have internal predecessors, (46696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:16,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16262 states to 16262 states and 46696 transitions. [2022-02-10 22:37:16,847 INFO L78 Accepts]: Start accepts. Automaton has 16262 states and 46696 transitions. Word has length 177 [2022-02-10 22:37:16,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:16,848 INFO L470 AbstractCegarLoop]: Abstraction has 16262 states and 46696 transitions. [2022-02-10 22:37:16,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:16,848 INFO L276 IsEmpty]: Start isEmpty. Operand 16262 states and 46696 transitions. [2022-02-10 22:37:16,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:16,872 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:16,872 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:16,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2022-02-10 22:37:16,872 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:16,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:16,872 INFO L85 PathProgramCache]: Analyzing trace with hash 774256320, now seen corresponding path program 46 times [2022-02-10 22:37:16,872 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:16,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77935657] [2022-02-10 22:37:16,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:16,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:17,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:17,241 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:17,241 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77935657] [2022-02-10 22:37:17,241 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77935657] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:17,241 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:17,241 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:37:17,241 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561693253] [2022-02-10 22:37:17,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:17,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:37:17,241 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:17,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:37:17,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:37:17,242 INFO L87 Difference]: Start difference. First operand 16262 states and 46696 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:17,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:17,880 INFO L93 Difference]: Finished difference Result 27782 states and 79690 transitions. [2022-02-10 22:37:17,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:37:17,880 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:17,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:17,936 INFO L225 Difference]: With dead ends: 27782 [2022-02-10 22:37:17,937 INFO L226 Difference]: Without dead ends: 27782 [2022-02-10 22:37:17,937 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=1053, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:37:17,937 INFO L934 BasicCegarLoop]: 366 mSDtfsCounter, 1022 mSDsluCounter, 2636 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:17,937 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1022 Valid, 2943 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:37:17,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27782 states. [2022-02-10 22:37:18,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27782 to 16270. [2022-02-10 22:37:18,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16270 states, 16269 states have (on average 2.8715962874177885) internal successors, (46718), 16269 states have internal predecessors, (46718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:18,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16270 states to 16270 states and 46718 transitions. [2022-02-10 22:37:18,302 INFO L78 Accepts]: Start accepts. Automaton has 16270 states and 46718 transitions. Word has length 177 [2022-02-10 22:37:18,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:18,302 INFO L470 AbstractCegarLoop]: Abstraction has 16270 states and 46718 transitions. [2022-02-10 22:37:18,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:18,303 INFO L276 IsEmpty]: Start isEmpty. Operand 16270 states and 46718 transitions. [2022-02-10 22:37:18,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:18,325 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:18,325 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:18,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2022-02-10 22:37:18,325 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:18,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:18,326 INFO L85 PathProgramCache]: Analyzing trace with hash 975805210, now seen corresponding path program 51 times [2022-02-10 22:37:18,326 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:18,326 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957523366] [2022-02-10 22:37:18,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:18,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:18,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:18,647 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:18,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957523366] [2022-02-10 22:37:18,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957523366] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:18,648 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:18,648 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:37:18,648 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23070941] [2022-02-10 22:37:18,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:18,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:37:18,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:18,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:37:18,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:37:18,648 INFO L87 Difference]: Start difference. First operand 16270 states and 46718 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:19,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:19,261 INFO L93 Difference]: Finished difference Result 28088 states and 80568 transitions. [2022-02-10 22:37:19,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:37:19,261 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:19,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:19,315 INFO L225 Difference]: With dead ends: 28088 [2022-02-10 22:37:19,315 INFO L226 Difference]: Without dead ends: 28088 [2022-02-10 22:37:19,315 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=336, Invalid=1070, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:37:19,315 INFO L934 BasicCegarLoop]: 373 mSDtfsCounter, 1088 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 3033 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:19,316 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1088 Valid, 3033 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:37:19,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28088 states. [2022-02-10 22:37:19,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28088 to 16262. [2022-02-10 22:37:19,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16262 states, 16261 states have (on average 2.87165610971035) internal successors, (46696), 16261 states have internal predecessors, (46696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:19,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16262 states to 16262 states and 46696 transitions. [2022-02-10 22:37:19,695 INFO L78 Accepts]: Start accepts. Automaton has 16262 states and 46696 transitions. Word has length 177 [2022-02-10 22:37:19,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:19,695 INFO L470 AbstractCegarLoop]: Abstraction has 16262 states and 46696 transitions. [2022-02-10 22:37:19,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:19,695 INFO L276 IsEmpty]: Start isEmpty. Operand 16262 states and 46696 transitions. [2022-02-10 22:37:19,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:19,719 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:19,719 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:19,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2022-02-10 22:37:19,719 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:19,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:19,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1439379952, now seen corresponding path program 34 times [2022-02-10 22:37:19,721 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:19,721 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824362156] [2022-02-10 22:37:19,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:19,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:20,015 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:20,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824362156] [2022-02-10 22:37:20,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824362156] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:20,015 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:20,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:37:20,015 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520763843] [2022-02-10 22:37:20,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:20,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:37:20,015 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:20,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:37:20,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:37:20,016 INFO L87 Difference]: Start difference. First operand 16262 states and 46696 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:20,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:20,583 INFO L93 Difference]: Finished difference Result 27984 states and 80274 transitions. [2022-02-10 22:37:20,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:37:20,584 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:20,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:20,639 INFO L225 Difference]: With dead ends: 27984 [2022-02-10 22:37:20,639 INFO L226 Difference]: Without dead ends: 27984 [2022-02-10 22:37:20,640 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:37:20,640 INFO L934 BasicCegarLoop]: 373 mSDtfsCounter, 1077 mSDsluCounter, 2625 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 2948 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:20,640 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1077 Valid, 2948 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:37:20,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27984 states. [2022-02-10 22:37:20,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27984 to 16246. [2022-02-10 22:37:20,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16246 states, 16245 states have (on average 2.8707910126192675) internal successors, (46636), 16245 states have internal predecessors, (46636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:20,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16246 states to 16246 states and 46636 transitions. [2022-02-10 22:37:20,956 INFO L78 Accepts]: Start accepts. Automaton has 16246 states and 46636 transitions. Word has length 177 [2022-02-10 22:37:20,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:20,956 INFO L470 AbstractCegarLoop]: Abstraction has 16246 states and 46636 transitions. [2022-02-10 22:37:20,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:20,956 INFO L276 IsEmpty]: Start isEmpty. Operand 16246 states and 46636 transitions. [2022-02-10 22:37:20,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:20,980 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:20,980 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:20,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2022-02-10 22:37:20,980 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:20,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:20,980 INFO L85 PathProgramCache]: Analyzing trace with hash 625248650, now seen corresponding path program 46 times [2022-02-10 22:37:20,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:20,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554958333] [2022-02-10 22:37:20,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:20,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:21,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:21,287 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:21,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554958333] [2022-02-10 22:37:21,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554958333] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:21,287 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:21,287 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:37:21,287 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564146800] [2022-02-10 22:37:21,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:21,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:37:21,288 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:21,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:37:21,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:37:21,288 INFO L87 Difference]: Start difference. First operand 16246 states and 46636 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:21,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:21,988 INFO L93 Difference]: Finished difference Result 27676 states and 79330 transitions. [2022-02-10 22:37:21,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:37:21,988 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:21,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:22,042 INFO L225 Difference]: With dead ends: 27676 [2022-02-10 22:37:22,042 INFO L226 Difference]: Without dead ends: 27676 [2022-02-10 22:37:22,043 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:37:22,043 INFO L934 BasicCegarLoop]: 366 mSDtfsCounter, 832 mSDsluCounter, 3644 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 3926 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:22,043 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [832 Valid, 3926 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:37:22,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27676 states. [2022-02-10 22:37:22,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27676 to 16238. [2022-02-10 22:37:22,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16238 states, 16237 states have (on average 2.869372421013734) internal successors, (46590), 16237 states have internal predecessors, (46590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:22,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16238 states to 16238 states and 46590 transitions. [2022-02-10 22:37:22,354 INFO L78 Accepts]: Start accepts. Automaton has 16238 states and 46590 transitions. Word has length 177 [2022-02-10 22:37:22,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:22,355 INFO L470 AbstractCegarLoop]: Abstraction has 16238 states and 46590 transitions. [2022-02-10 22:37:22,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:22,355 INFO L276 IsEmpty]: Start isEmpty. Operand 16238 states and 46590 transitions. [2022-02-10 22:37:22,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:22,377 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:22,377 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:22,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2022-02-10 22:37:22,377 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:22,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:22,378 INFO L85 PathProgramCache]: Analyzing trace with hash -901664912, now seen corresponding path program 47 times [2022-02-10 22:37:22,378 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:22,378 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150695287] [2022-02-10 22:37:22,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:22,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:22,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:22,681 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:22,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150695287] [2022-02-10 22:37:22,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150695287] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:22,681 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:22,681 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:37:22,681 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628511763] [2022-02-10 22:37:22,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:22,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:37:22,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:22,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:37:22,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:37:22,682 INFO L87 Difference]: Start difference. First operand 16238 states and 46590 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:23,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:23,303 INFO L93 Difference]: Finished difference Result 27646 states and 79252 transitions. [2022-02-10 22:37:23,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:37:23,303 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:23,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:23,361 INFO L225 Difference]: With dead ends: 27646 [2022-02-10 22:37:23,361 INFO L226 Difference]: Without dead ends: 27646 [2022-02-10 22:37:23,362 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:37:23,362 INFO L934 BasicCegarLoop]: 365 mSDtfsCounter, 847 mSDsluCounter, 3017 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 3317 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:23,362 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [847 Valid, 3317 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:37:23,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27646 states. [2022-02-10 22:37:23,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27646 to 16254. [2022-02-10 22:37:23,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16254 states, 16253 states have (on average 2.8692549067864395) internal successors, (46634), 16253 states have internal predecessors, (46634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:23,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16254 states to 16254 states and 46634 transitions. [2022-02-10 22:37:23,688 INFO L78 Accepts]: Start accepts. Automaton has 16254 states and 46634 transitions. Word has length 177 [2022-02-10 22:37:23,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:23,688 INFO L470 AbstractCegarLoop]: Abstraction has 16254 states and 46634 transitions. [2022-02-10 22:37:23,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:23,688 INFO L276 IsEmpty]: Start isEmpty. Operand 16254 states and 46634 transitions. [2022-02-10 22:37:23,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:23,712 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:23,712 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:23,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2022-02-10 22:37:23,712 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:23,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:23,712 INFO L85 PathProgramCache]: Analyzing trace with hash -700116022, now seen corresponding path program 52 times [2022-02-10 22:37:23,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:23,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138025634] [2022-02-10 22:37:23,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:23,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:24,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:24,031 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:24,031 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138025634] [2022-02-10 22:37:24,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138025634] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:24,031 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:24,031 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:37:24,031 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979953273] [2022-02-10 22:37:24,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:24,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:37:24,032 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:24,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:37:24,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:37:24,032 INFO L87 Difference]: Start difference. First operand 16254 states and 46634 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:24,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:24,621 INFO L93 Difference]: Finished difference Result 27968 states and 80174 transitions. [2022-02-10 22:37:24,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:37:24,621 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:24,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:24,674 INFO L225 Difference]: With dead ends: 27968 [2022-02-10 22:37:24,674 INFO L226 Difference]: Without dead ends: 27968 [2022-02-10 22:37:24,675 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=335, Invalid=1071, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:37:24,675 INFO L934 BasicCegarLoop]: 374 mSDtfsCounter, 927 mSDsluCounter, 2544 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 2866 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:24,675 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [927 Valid, 2866 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:37:24,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27968 states. [2022-02-10 22:37:24,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27968 to 16254. [2022-02-10 22:37:24,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16254 states, 16253 states have (on average 2.8692549067864395) internal successors, (46634), 16253 states have internal predecessors, (46634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:24,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16254 states to 16254 states and 46634 transitions. [2022-02-10 22:37:24,986 INFO L78 Accepts]: Start accepts. Automaton has 16254 states and 46634 transitions. Word has length 177 [2022-02-10 22:37:24,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:24,987 INFO L470 AbstractCegarLoop]: Abstraction has 16254 states and 46634 transitions. [2022-02-10 22:37:24,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:24,987 INFO L276 IsEmpty]: Start isEmpty. Operand 16254 states and 46634 transitions. [2022-02-10 22:37:25,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:25,010 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:25,010 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:25,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2022-02-10 22:37:25,011 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:25,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:25,011 INFO L85 PathProgramCache]: Analyzing trace with hash -236541280, now seen corresponding path program 35 times [2022-02-10 22:37:25,011 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:25,011 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608238525] [2022-02-10 22:37:25,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:25,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:25,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:25,326 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:25,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608238525] [2022-02-10 22:37:25,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608238525] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:25,326 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:25,326 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:37:25,326 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762998817] [2022-02-10 22:37:25,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:25,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:37:25,326 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:25,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:37:25,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:37:25,327 INFO L87 Difference]: Start difference. First operand 16254 states and 46634 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:25,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:25,900 INFO L93 Difference]: Finished difference Result 27872 states and 79902 transitions. [2022-02-10 22:37:25,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:37:25,900 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:25,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:25,954 INFO L225 Difference]: With dead ends: 27872 [2022-02-10 22:37:25,954 INFO L226 Difference]: Without dead ends: 27872 [2022-02-10 22:37:25,954 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=328, Invalid=1004, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:37:25,954 INFO L934 BasicCegarLoop]: 354 mSDtfsCounter, 1004 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:25,954 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1004 Valid, 2795 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:37:25,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27872 states. [2022-02-10 22:37:26,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27872 to 16246. [2022-02-10 22:37:26,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16246 states, 16245 states have (on average 2.8683287165281626) internal successors, (46596), 16245 states have internal predecessors, (46596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:26,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16246 states to 16246 states and 46596 transitions. [2022-02-10 22:37:26,256 INFO L78 Accepts]: Start accepts. Automaton has 16246 states and 46596 transitions. Word has length 177 [2022-02-10 22:37:26,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:26,256 INFO L470 AbstractCegarLoop]: Abstraction has 16246 states and 46596 transitions. [2022-02-10 22:37:26,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:26,256 INFO L276 IsEmpty]: Start isEmpty. Operand 16246 states and 46596 transitions. [2022-02-10 22:37:26,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:26,278 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:26,278 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:26,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2022-02-10 22:37:26,278 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:26,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:26,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1960172420, now seen corresponding path program 53 times [2022-02-10 22:37:26,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:26,279 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126647334] [2022-02-10 22:37:26,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:26,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:26,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:26,600 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:26,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126647334] [2022-02-10 22:37:26,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126647334] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:26,600 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:26,600 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:37:26,601 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081092009] [2022-02-10 22:37:26,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:26,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:37:26,601 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:26,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:37:26,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:37:26,601 INFO L87 Difference]: Start difference. First operand 16246 states and 46596 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:27,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:27,237 INFO L93 Difference]: Finished difference Result 28304 states and 81106 transitions. [2022-02-10 22:37:27,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 22:37:27,237 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:27,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:27,367 INFO L225 Difference]: With dead ends: 28304 [2022-02-10 22:37:27,367 INFO L226 Difference]: Without dead ends: 28304 [2022-02-10 22:37:27,367 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=378, Invalid=1182, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 22:37:27,368 INFO L934 BasicCegarLoop]: 387 mSDtfsCounter, 1135 mSDsluCounter, 2938 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 3273 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:27,368 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1135 Valid, 3273 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:37:27,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28304 states. [2022-02-10 22:37:27,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28304 to 16230. [2022-02-10 22:37:27,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16230 states, 16229 states have (on average 2.868445375562265) internal successors, (46552), 16229 states have internal predecessors, (46552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:27,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16230 states to 16230 states and 46552 transitions. [2022-02-10 22:37:27,642 INFO L78 Accepts]: Start accepts. Automaton has 16230 states and 46552 transitions. Word has length 177 [2022-02-10 22:37:27,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:27,643 INFO L470 AbstractCegarLoop]: Abstraction has 16230 states and 46552 transitions. [2022-02-10 22:37:27,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:27,643 INFO L276 IsEmpty]: Start isEmpty. Operand 16230 states and 46552 transitions. [2022-02-10 22:37:27,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:27,665 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:27,665 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:27,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2022-02-10 22:37:27,665 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:27,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:27,667 INFO L85 PathProgramCache]: Analyzing trace with hash -2039912484, now seen corresponding path program 36 times [2022-02-10 22:37:27,667 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:27,667 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220005895] [2022-02-10 22:37:27,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:27,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:27,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:27,963 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:27,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220005895] [2022-02-10 22:37:27,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220005895] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:27,963 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:27,963 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:37:27,963 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980716345] [2022-02-10 22:37:27,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:27,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:37:27,963 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:27,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:37:27,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:37:27,963 INFO L87 Difference]: Start difference. First operand 16230 states and 46552 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:28,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:28,571 INFO L93 Difference]: Finished difference Result 27712 states and 79422 transitions. [2022-02-10 22:37:28,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 22:37:28,572 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:28,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:28,623 INFO L225 Difference]: With dead ends: 27712 [2022-02-10 22:37:28,623 INFO L226 Difference]: Without dead ends: 27712 [2022-02-10 22:37:28,623 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=370, Invalid=1112, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:37:28,623 INFO L934 BasicCegarLoop]: 374 mSDtfsCounter, 1220 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:28,623 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1220 Valid, 2794 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:37:28,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27712 states. [2022-02-10 22:37:28,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27712 to 16246. [2022-02-10 22:37:28,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16246 states, 16245 states have (on average 2.8683287165281626) internal successors, (46596), 16245 states have internal predecessors, (46596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:28,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16246 states to 16246 states and 46596 transitions. [2022-02-10 22:37:28,928 INFO L78 Accepts]: Start accepts. Automaton has 16246 states and 46596 transitions. Word has length 177 [2022-02-10 22:37:28,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:28,928 INFO L470 AbstractCegarLoop]: Abstraction has 16246 states and 46596 transitions. [2022-02-10 22:37:28,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:28,928 INFO L276 IsEmpty]: Start isEmpty. Operand 16246 states and 46596 transitions. [2022-02-10 22:37:28,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:28,950 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:28,951 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:28,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2022-02-10 22:37:28,951 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:28,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:28,951 INFO L85 PathProgramCache]: Analyzing trace with hash 160691390, now seen corresponding path program 37 times [2022-02-10 22:37:28,951 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:28,951 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371455834] [2022-02-10 22:37:28,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:28,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:29,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:29,241 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:29,241 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371455834] [2022-02-10 22:37:29,241 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371455834] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:29,241 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:29,241 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:37:29,241 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206258509] [2022-02-10 22:37:29,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:29,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:37:29,241 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:29,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:37:29,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:37:29,242 INFO L87 Difference]: Start difference. First operand 16246 states and 46596 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:29,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:29,873 INFO L93 Difference]: Finished difference Result 27064 states and 77352 transitions. [2022-02-10 22:37:29,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 22:37:29,873 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:29,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:29,926 INFO L225 Difference]: With dead ends: 27064 [2022-02-10 22:37:29,926 INFO L226 Difference]: Without dead ends: 27064 [2022-02-10 22:37:29,926 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=398, Invalid=1242, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 22:37:29,926 INFO L934 BasicCegarLoop]: 390 mSDtfsCounter, 1064 mSDsluCounter, 2670 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:29,926 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1064 Valid, 3017 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:37:29,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27064 states. [2022-02-10 22:37:30,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27064 to 14694. [2022-02-10 22:37:30,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14694 states, 14693 states have (on average 2.854148233852855) internal successors, (41936), 14693 states have internal predecessors, (41936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:30,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14694 states to 14694 states and 41936 transitions. [2022-02-10 22:37:30,217 INFO L78 Accepts]: Start accepts. Automaton has 14694 states and 41936 transitions. Word has length 177 [2022-02-10 22:37:30,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:30,217 INFO L470 AbstractCegarLoop]: Abstraction has 14694 states and 41936 transitions. [2022-02-10 22:37:30,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:30,217 INFO L276 IsEmpty]: Start isEmpty. Operand 14694 states and 41936 transitions. [2022-02-10 22:37:30,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:30,238 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:30,238 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:30,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2022-02-10 22:37:30,238 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:30,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:30,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1092416362, now seen corresponding path program 54 times [2022-02-10 22:37:30,239 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:30,239 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942875485] [2022-02-10 22:37:30,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:30,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:30,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:30,504 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:30,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942875485] [2022-02-10 22:37:30,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942875485] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:30,505 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:30,505 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:37:30,505 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166631316] [2022-02-10 22:37:30,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:30,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:37:30,505 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:30,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:37:30,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:37:30,505 INFO L87 Difference]: Start difference. First operand 14694 states and 41936 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:31,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:31,194 INFO L93 Difference]: Finished difference Result 25152 states and 72114 transitions. [2022-02-10 22:37:31,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 22:37:31,195 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:31,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:31,248 INFO L225 Difference]: With dead ends: 25152 [2022-02-10 22:37:31,248 INFO L226 Difference]: Without dead ends: 25152 [2022-02-10 22:37:31,248 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 22:37:31,248 INFO L934 BasicCegarLoop]: 421 mSDtfsCounter, 1037 mSDsluCounter, 3197 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 3545 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:31,248 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1037 Valid, 3545 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:37:31,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25152 states. [2022-02-10 22:37:31,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25152 to 14710. [2022-02-10 22:37:31,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14710 states, 14709 states have (on average 2.855122713984635) internal successors, (41996), 14709 states have internal predecessors, (41996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:31,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14710 states to 14710 states and 41996 transitions. [2022-02-10 22:37:31,557 INFO L78 Accepts]: Start accepts. Automaton has 14710 states and 41996 transitions. Word has length 177 [2022-02-10 22:37:31,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:31,557 INFO L470 AbstractCegarLoop]: Abstraction has 14710 states and 41996 transitions. [2022-02-10 22:37:31,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:31,557 INFO L276 IsEmpty]: Start isEmpty. Operand 14710 states and 41996 transitions. [2022-02-10 22:37:31,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:31,578 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:31,578 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:31,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2022-02-10 22:37:31,578 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:31,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:31,578 INFO L85 PathProgramCache]: Analyzing trace with hash 2001586854, now seen corresponding path program 47 times [2022-02-10 22:37:31,578 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:31,578 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86882587] [2022-02-10 22:37:31,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:31,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:31,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:31,876 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:31,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86882587] [2022-02-10 22:37:31,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86882587] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:37:31,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344865848] [2022-02-10 22:37:31,876 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:37:31,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:37:31,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:37:31,878 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:37:31,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-10 22:37:32,079 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:37:32,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:37:32,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 70 conjunts are in the unsatisfiable core [2022-02-10 22:37:32,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:37:32,215 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:37:32,319 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:37:32,617 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 22:37:32,618 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 22:37:32,770 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:37:33,012 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:37:33,107 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:37:33,493 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:37:33,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:37:33,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:37:33,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:33,875 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344865848] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:37:33,876 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:37:33,876 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 9] total 49 [2022-02-10 22:37:33,876 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535768168] [2022-02-10 22:37:33,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:37:33,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-10 22:37:33,877 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:33,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-10 22:37:33,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2119, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 22:37:33,878 INFO L87 Difference]: Start difference. First operand 14710 states and 41996 transitions. Second operand has 49 states, 49 states have (on average 7.816326530612245) internal successors, (383), 49 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:39,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:39,731 INFO L93 Difference]: Finished difference Result 39895 states and 115030 transitions. [2022-02-10 22:37:39,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-10 22:37:39,732 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 7.816326530612245) internal successors, (383), 49 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:39,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:39,808 INFO L225 Difference]: With dead ends: 39895 [2022-02-10 22:37:39,809 INFO L226 Difference]: Without dead ends: 39895 [2022-02-10 22:37:39,809 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2727 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2303, Invalid=9039, Unknown=0, NotChecked=0, Total=11342 [2022-02-10 22:37:39,809 INFO L934 BasicCegarLoop]: 442 mSDtfsCounter, 3248 mSDsluCounter, 8291 mSDsCounter, 0 mSdLazyCounter, 2833 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3248 SdHoareTripleChecker+Valid, 8530 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:39,809 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3248 Valid, 8530 Invalid, 2879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2833 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-10 22:37:39,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39895 states. [2022-02-10 22:37:40,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39895 to 14710. [2022-02-10 22:37:40,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14710 states, 14709 states have (on average 2.855122713984635) internal successors, (41996), 14709 states have internal predecessors, (41996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:40,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14710 states to 14710 states and 41996 transitions. [2022-02-10 22:37:40,206 INFO L78 Accepts]: Start accepts. Automaton has 14710 states and 41996 transitions. Word has length 177 [2022-02-10 22:37:40,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:40,206 INFO L470 AbstractCegarLoop]: Abstraction has 14710 states and 41996 transitions. [2022-02-10 22:37:40,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 7.816326530612245) internal successors, (383), 49 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:40,206 INFO L276 IsEmpty]: Start isEmpty. Operand 14710 states and 41996 transitions. [2022-02-10 22:37:40,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:40,226 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:40,226 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:40,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-02-10 22:37:40,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable216 [2022-02-10 22:37:40,428 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:40,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:40,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1688917108, now seen corresponding path program 48 times [2022-02-10 22:37:40,428 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:40,428 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890565950] [2022-02-10 22:37:40,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:40,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:40,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:40,736 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:40,736 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890565950] [2022-02-10 22:37:40,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890565950] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:40,736 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:40,736 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:37:40,736 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498750508] [2022-02-10 22:37:40,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:40,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:37:40,736 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:40,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:37:40,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:37:40,737 INFO L87 Difference]: Start difference. First operand 14710 states and 41996 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:41,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:41,324 INFO L93 Difference]: Finished difference Result 21467 states and 61613 transitions. [2022-02-10 22:37:41,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:37:41,325 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:41,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:41,366 INFO L225 Difference]: With dead ends: 21467 [2022-02-10 22:37:41,366 INFO L226 Difference]: Without dead ends: 21467 [2022-02-10 22:37:41,366 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=337, Invalid=1069, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:37:41,366 INFO L934 BasicCegarLoop]: 326 mSDtfsCounter, 1036 mSDsluCounter, 2551 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 2815 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:41,366 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1036 Valid, 2815 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:37:41,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21467 states. [2022-02-10 22:37:41,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21467 to 14742. [2022-02-10 22:37:41,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14742 states, 14741 states have (on average 2.8565226239739503) internal successors, (42108), 14741 states have internal predecessors, (42108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:41,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14742 states to 14742 states and 42108 transitions. [2022-02-10 22:37:41,639 INFO L78 Accepts]: Start accepts. Automaton has 14742 states and 42108 transitions. Word has length 177 [2022-02-10 22:37:41,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:41,639 INFO L470 AbstractCegarLoop]: Abstraction has 14742 states and 42108 transitions. [2022-02-10 22:37:41,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:41,639 INFO L276 IsEmpty]: Start isEmpty. Operand 14742 states and 42108 transitions. [2022-02-10 22:37:41,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:41,659 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:41,659 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:41,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2022-02-10 22:37:41,660 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:41,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:41,660 INFO L85 PathProgramCache]: Analyzing trace with hash 162003546, now seen corresponding path program 48 times [2022-02-10 22:37:41,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:41,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85245115] [2022-02-10 22:37:41,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:41,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:41,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:41,967 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:41,967 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85245115] [2022-02-10 22:37:41,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85245115] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:41,968 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:41,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:37:41,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783486295] [2022-02-10 22:37:41,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:41,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:37:41,968 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:41,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:37:41,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:37:41,968 INFO L87 Difference]: Start difference. First operand 14742 states and 42108 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:42,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:42,587 INFO L93 Difference]: Finished difference Result 21563 states and 61877 transitions. [2022-02-10 22:37:42,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:37:42,588 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:42,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:42,626 INFO L225 Difference]: With dead ends: 21563 [2022-02-10 22:37:42,626 INFO L226 Difference]: Without dead ends: 21563 [2022-02-10 22:37:42,627 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=332, Invalid=1000, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:37:42,627 INFO L934 BasicCegarLoop]: 339 mSDtfsCounter, 889 mSDsluCounter, 2801 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 3060 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:42,627 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [889 Valid, 3060 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:37:42,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21563 states. [2022-02-10 22:37:42,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21563 to 14758. [2022-02-10 22:37:42,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14758 states, 14757 states have (on average 2.856407128820221) internal successors, (42152), 14757 states have internal predecessors, (42152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:42,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14758 states to 14758 states and 42152 transitions. [2022-02-10 22:37:42,890 INFO L78 Accepts]: Start accepts. Automaton has 14758 states and 42152 transitions. Word has length 177 [2022-02-10 22:37:42,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:42,891 INFO L470 AbstractCegarLoop]: Abstraction has 14758 states and 42152 transitions. [2022-02-10 22:37:42,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:42,891 INFO L276 IsEmpty]: Start isEmpty. Operand 14758 states and 42152 transitions. [2022-02-10 22:37:42,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:42,912 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:42,912 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:42,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2022-02-10 22:37:42,912 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:42,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:42,912 INFO L85 PathProgramCache]: Analyzing trace with hash 363552436, now seen corresponding path program 55 times [2022-02-10 22:37:42,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:42,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592997676] [2022-02-10 22:37:42,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:42,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:43,232 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:43,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592997676] [2022-02-10 22:37:43,232 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592997676] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:43,232 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:43,232 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:37:43,232 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161285598] [2022-02-10 22:37:43,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:43,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:37:43,232 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:43,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:37:43,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:37:43,233 INFO L87 Difference]: Start difference. First operand 14758 states and 42152 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:43,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:43,892 INFO L93 Difference]: Finished difference Result 21845 states and 62673 transitions. [2022-02-10 22:37:43,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:37:43,892 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:43,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:43,930 INFO L225 Difference]: With dead ends: 21845 [2022-02-10 22:37:43,931 INFO L226 Difference]: Without dead ends: 21845 [2022-02-10 22:37:43,931 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=326, Invalid=1080, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:37:43,931 INFO L934 BasicCegarLoop]: 351 mSDtfsCounter, 913 mSDsluCounter, 3386 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 3657 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:43,931 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [913 Valid, 3657 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:37:43,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21845 states. [2022-02-10 22:37:44,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21845 to 14758. [2022-02-10 22:37:44,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14758 states, 14757 states have (on average 2.856407128820221) internal successors, (42152), 14757 states have internal predecessors, (42152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:44,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14758 states to 14758 states and 42152 transitions. [2022-02-10 22:37:44,202 INFO L78 Accepts]: Start accepts. Automaton has 14758 states and 42152 transitions. Word has length 177 [2022-02-10 22:37:44,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:44,202 INFO L470 AbstractCegarLoop]: Abstraction has 14758 states and 42152 transitions. [2022-02-10 22:37:44,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:44,202 INFO L276 IsEmpty]: Start isEmpty. Operand 14758 states and 42152 transitions. [2022-02-10 22:37:44,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:44,223 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:44,223 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:44,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2022-02-10 22:37:44,224 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:44,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:44,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1985312106, now seen corresponding path program 49 times [2022-02-10 22:37:44,224 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:44,224 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57366530] [2022-02-10 22:37:44,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:44,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:44,540 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:44,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57366530] [2022-02-10 22:37:44,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57366530] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:44,540 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:44,540 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:37:44,540 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619402454] [2022-02-10 22:37:44,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:44,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:37:44,540 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:44,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:37:44,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:37:44,540 INFO L87 Difference]: Start difference. First operand 14758 states and 42152 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:45,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:45,121 INFO L93 Difference]: Finished difference Result 21949 states and 62967 transitions. [2022-02-10 22:37:45,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:37:45,122 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:45,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:45,161 INFO L225 Difference]: With dead ends: 21949 [2022-02-10 22:37:45,161 INFO L226 Difference]: Without dead ends: 21949 [2022-02-10 22:37:45,162 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=319, Invalid=1013, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:37:45,162 INFO L934 BasicCegarLoop]: 331 mSDtfsCounter, 1140 mSDsluCounter, 2524 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:45,162 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1140 Valid, 2803 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:37:45,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21949 states. [2022-02-10 22:37:45,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21949 to 14750. [2022-02-10 22:37:45,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14750 states, 14749 states have (on average 2.855380025764459) internal successors, (42114), 14749 states have internal predecessors, (42114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:45,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14750 states to 14750 states and 42114 transitions. [2022-02-10 22:37:45,438 INFO L78 Accepts]: Start accepts. Automaton has 14750 states and 42114 transitions. Word has length 177 [2022-02-10 22:37:45,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:45,438 INFO L470 AbstractCegarLoop]: Abstraction has 14750 states and 42114 transitions. [2022-02-10 22:37:45,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:45,438 INFO L276 IsEmpty]: Start isEmpty. Operand 14750 states and 42114 transitions. [2022-02-10 22:37:45,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:45,459 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:45,459 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:45,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2022-02-10 22:37:45,459 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:45,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:45,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1271126418, now seen corresponding path program 56 times [2022-02-10 22:37:45,459 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:45,459 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101817562] [2022-02-10 22:37:45,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:45,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:45,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:45,789 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:45,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101817562] [2022-02-10 22:37:45,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101817562] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:45,789 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:45,789 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:37:45,789 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544813674] [2022-02-10 22:37:45,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:45,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:37:45,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:45,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:37:45,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:37:45,790 INFO L87 Difference]: Start difference. First operand 14750 states and 42114 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:46,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:46,480 INFO L93 Difference]: Finished difference Result 22237 states and 63775 transitions. [2022-02-10 22:37:46,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:37:46,480 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:46,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:46,520 INFO L225 Difference]: With dead ends: 22237 [2022-02-10 22:37:46,520 INFO L226 Difference]: Without dead ends: 22237 [2022-02-10 22:37:46,520 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=389, Invalid=1251, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 22:37:46,520 INFO L934 BasicCegarLoop]: 368 mSDtfsCounter, 996 mSDsluCounter, 3210 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 3508 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:46,520 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [996 Valid, 3508 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:37:46,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22237 states. [2022-02-10 22:37:46,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22237 to 14734. [2022-02-10 22:37:46,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14734 states, 14733 states have (on average 2.855494468200638) internal successors, (42070), 14733 states have internal predecessors, (42070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:46,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14734 states to 14734 states and 42070 transitions. [2022-02-10 22:37:46,788 INFO L78 Accepts]: Start accepts. Automaton has 14734 states and 42070 transitions. Word has length 177 [2022-02-10 22:37:46,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:46,788 INFO L470 AbstractCegarLoop]: Abstraction has 14734 states and 42070 transitions. [2022-02-10 22:37:46,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:46,788 INFO L276 IsEmpty]: Start isEmpty. Operand 14734 states and 42070 transitions. [2022-02-10 22:37:46,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:46,809 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:46,809 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:46,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2022-02-10 22:37:46,809 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:46,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:46,809 INFO L85 PathProgramCache]: Analyzing trace with hash 181940902, now seen corresponding path program 50 times [2022-02-10 22:37:46,810 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:46,810 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975536557] [2022-02-10 22:37:46,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:46,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:47,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:47,135 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:47,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975536557] [2022-02-10 22:37:47,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975536557] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:47,135 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:47,135 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:37:47,135 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233506171] [2022-02-10 22:37:47,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:47,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:37:47,135 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:47,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:37:47,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:37:47,135 INFO L87 Difference]: Start difference. First operand 14734 states and 42070 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:47,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:47,786 INFO L93 Difference]: Finished difference Result 22013 states and 63143 transitions. [2022-02-10 22:37:47,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:37:47,786 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:47,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:47,826 INFO L225 Difference]: With dead ends: 22013 [2022-02-10 22:37:47,826 INFO L226 Difference]: Without dead ends: 22013 [2022-02-10 22:37:47,826 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 22:37:47,827 INFO L934 BasicCegarLoop]: 355 mSDtfsCounter, 943 mSDsluCounter, 2504 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:47,827 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 2803 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:37:47,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22013 states. [2022-02-10 22:37:48,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22013 to 14750. [2022-02-10 22:37:48,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14750 states, 14749 states have (on average 2.855380025764459) internal successors, (42114), 14749 states have internal predecessors, (42114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:48,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14750 states to 14750 states and 42114 transitions. [2022-02-10 22:37:48,109 INFO L78 Accepts]: Start accepts. Automaton has 14750 states and 42114 transitions. Word has length 177 [2022-02-10 22:37:48,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:48,109 INFO L470 AbstractCegarLoop]: Abstraction has 14750 states and 42114 transitions. [2022-02-10 22:37:48,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:48,109 INFO L276 IsEmpty]: Start isEmpty. Operand 14750 states and 42114 transitions. [2022-02-10 22:37:48,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:48,130 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:48,130 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:48,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2022-02-10 22:37:48,130 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:48,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:48,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1912422520, now seen corresponding path program 51 times [2022-02-10 22:37:48,130 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:48,130 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840412274] [2022-02-10 22:37:48,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:48,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:48,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:48,417 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:48,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840412274] [2022-02-10 22:37:48,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840412274] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:48,417 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:48,417 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:37:48,417 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651180097] [2022-02-10 22:37:48,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:48,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:37:48,417 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:48,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:37:48,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:37:48,418 INFO L87 Difference]: Start difference. First operand 14750 states and 42114 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:49,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:49,047 INFO L93 Difference]: Finished difference Result 22877 states and 65615 transitions. [2022-02-10 22:37:49,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 22:37:49,047 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:49,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:49,089 INFO L225 Difference]: With dead ends: 22877 [2022-02-10 22:37:49,089 INFO L226 Difference]: Without dead ends: 22877 [2022-02-10 22:37:49,089 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 22:37:49,089 INFO L934 BasicCegarLoop]: 388 mSDtfsCounter, 967 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:49,089 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [967 Valid, 2871 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:37:49,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22877 states. [2022-02-10 22:37:49,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22877 to 14694. [2022-02-10 22:37:49,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14694 states, 14693 states have (on average 2.854148233852855) internal successors, (41936), 14693 states have internal predecessors, (41936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:49,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14694 states to 14694 states and 41936 transitions. [2022-02-10 22:37:49,371 INFO L78 Accepts]: Start accepts. Automaton has 14694 states and 41936 transitions. Word has length 177 [2022-02-10 22:37:49,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:49,371 INFO L470 AbstractCegarLoop]: Abstraction has 14694 states and 41936 transitions. [2022-02-10 22:37:49,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:49,372 INFO L276 IsEmpty]: Start isEmpty. Operand 14694 states and 41936 transitions. [2022-02-10 22:37:49,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:49,392 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:49,392 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:49,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2022-02-10 22:37:49,392 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:49,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:49,392 INFO L85 PathProgramCache]: Analyzing trace with hash 758245182, now seen corresponding path program 52 times [2022-02-10 22:37:49,392 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:49,392 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778772588] [2022-02-10 22:37:49,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:49,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:49,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:49,702 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:49,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778772588] [2022-02-10 22:37:49,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778772588] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:49,703 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:49,703 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:37:49,703 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953503292] [2022-02-10 22:37:49,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:49,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:37:49,703 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:49,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:37:49,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:37:49,703 INFO L87 Difference]: Start difference. First operand 14694 states and 41936 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:50,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:50,372 INFO L93 Difference]: Finished difference Result 20865 states and 59717 transitions. [2022-02-10 22:37:50,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 22:37:50,372 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:50,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:50,410 INFO L225 Difference]: With dead ends: 20865 [2022-02-10 22:37:50,410 INFO L226 Difference]: Without dead ends: 20865 [2022-02-10 22:37:50,410 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=378, Invalid=1182, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 22:37:50,410 INFO L934 BasicCegarLoop]: 323 mSDtfsCounter, 971 mSDsluCounter, 2895 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:50,410 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [971 Valid, 3152 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:37:50,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20865 states. [2022-02-10 22:37:50,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20865 to 14694. [2022-02-10 22:37:50,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14694 states, 14693 states have (on average 2.854148233852855) internal successors, (41936), 14693 states have internal predecessors, (41936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:50,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14694 states to 14694 states and 41936 transitions. [2022-02-10 22:37:50,675 INFO L78 Accepts]: Start accepts. Automaton has 14694 states and 41936 transitions. Word has length 177 [2022-02-10 22:37:50,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:50,675 INFO L470 AbstractCegarLoop]: Abstraction has 14694 states and 41936 transitions. [2022-02-10 22:37:50,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:50,675 INFO L276 IsEmpty]: Start isEmpty. Operand 14694 states and 41936 transitions. [2022-02-10 22:37:50,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:50,696 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:50,696 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:50,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2022-02-10 22:37:50,696 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:50,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:50,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1815179962, now seen corresponding path program 49 times [2022-02-10 22:37:50,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:50,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218230358] [2022-02-10 22:37:50,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:50,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:51,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:51,006 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:51,006 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218230358] [2022-02-10 22:37:51,006 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218230358] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:51,006 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:51,006 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:37:51,006 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914266912] [2022-02-10 22:37:51,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:51,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:37:51,006 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:51,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:37:51,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:37:51,007 INFO L87 Difference]: Start difference. First operand 14694 states and 41936 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:51,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:51,629 INFO L93 Difference]: Finished difference Result 20977 states and 60041 transitions. [2022-02-10 22:37:51,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 22:37:51,630 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:51,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:51,667 INFO L225 Difference]: With dead ends: 20977 [2022-02-10 22:37:51,667 INFO L226 Difference]: Without dead ends: 20977 [2022-02-10 22:37:51,667 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=372, Invalid=1110, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:37:51,667 INFO L934 BasicCegarLoop]: 323 mSDtfsCounter, 973 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:51,667 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [973 Valid, 2794 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:37:51,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20977 states. [2022-02-10 22:37:51,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20977 to 14726. [2022-02-10 22:37:51,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14726 states, 14725 states have (on average 2.8539219015280137) internal successors, (42024), 14725 states have internal predecessors, (42024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:51,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14726 states to 14726 states and 42024 transitions. [2022-02-10 22:37:51,924 INFO L78 Accepts]: Start accepts. Automaton has 14726 states and 42024 transitions. Word has length 177 [2022-02-10 22:37:51,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:51,924 INFO L470 AbstractCegarLoop]: Abstraction has 14726 states and 42024 transitions. [2022-02-10 22:37:51,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:51,924 INFO L276 IsEmpty]: Start isEmpty. Operand 14726 states and 42024 transitions. [2022-02-10 22:37:51,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:51,945 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:51,945 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:51,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2022-02-10 22:37:51,945 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:51,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:51,945 INFO L85 PathProgramCache]: Analyzing trace with hash -572309710, now seen corresponding path program 50 times [2022-02-10 22:37:51,945 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:51,945 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426527208] [2022-02-10 22:37:51,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:51,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:52,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:52,248 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:52,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426527208] [2022-02-10 22:37:52,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426527208] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:37:52,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826001077] [2022-02-10 22:37:52,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:37:52,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:37:52,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:37:52,249 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:37:52,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-10 22:37:52,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:37:52,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:37:52,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-10 22:37:52,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:37:52,751 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:37:52,836 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:37:52,862 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:37:53,226 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-02-10 22:37:53,226 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-02-10 22:37:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:37:53,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:37:54,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:54,982 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826001077] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:37:54,982 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:37:54,982 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 12] total 48 [2022-02-10 22:37:54,982 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864147544] [2022-02-10 22:37:54,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:37:54,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-10 22:37:54,982 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:54,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-10 22:37:54,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=2035, Unknown=2, NotChecked=0, Total=2256 [2022-02-10 22:37:54,983 INFO L87 Difference]: Start difference. First operand 14726 states and 42024 transitions. Second operand has 48 states, 48 states have (on average 8.25) internal successors, (396), 48 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:57,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:57,195 INFO L93 Difference]: Finished difference Result 23028 states and 65934 transitions. [2022-02-10 22:37:57,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-10 22:37:57,195 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 8.25) internal successors, (396), 48 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:57,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:57,239 INFO L225 Difference]: With dead ends: 23028 [2022-02-10 22:37:57,239 INFO L226 Difference]: Without dead ends: 23028 [2022-02-10 22:37:57,240 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=992, Invalid=4858, Unknown=2, NotChecked=0, Total=5852 [2022-02-10 22:37:57,240 INFO L934 BasicCegarLoop]: 398 mSDtfsCounter, 2111 mSDsluCounter, 8013 mSDsCounter, 0 mSdLazyCounter, 2499 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2111 SdHoareTripleChecker+Valid, 8201 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 295 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:57,240 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2111 Valid, 8201 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2499 Invalid, 0 Unknown, 295 Unchecked, 0.9s Time] [2022-02-10 22:37:57,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23028 states. [2022-02-10 22:37:57,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23028 to 14472. [2022-02-10 22:37:57,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14472 states, 14471 states have (on average 2.854398452076567) internal successors, (41306), 14471 states have internal predecessors, (41306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:57,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14472 states to 14472 states and 41306 transitions. [2022-02-10 22:37:57,524 INFO L78 Accepts]: Start accepts. Automaton has 14472 states and 41306 transitions. Word has length 177 [2022-02-10 22:37:57,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:57,524 INFO L470 AbstractCegarLoop]: Abstraction has 14472 states and 41306 transitions. [2022-02-10 22:37:57,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 8.25) internal successors, (396), 48 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:57,525 INFO L276 IsEmpty]: Start isEmpty. Operand 14472 states and 41306 transitions. [2022-02-10 22:37:57,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:57,545 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:57,545 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:57,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-02-10 22:37:57,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:37:57,746 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:57,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:57,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1698179548, now seen corresponding path program 53 times [2022-02-10 22:37:57,746 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:57,746 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217351524] [2022-02-10 22:37:57,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:57,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:58,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:58,125 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:58,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217351524] [2022-02-10 22:37:58,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217351524] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:58,125 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:58,125 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:37:58,125 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197384213] [2022-02-10 22:37:58,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:58,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:37:58,125 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:58,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:37:58,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:37:58,126 INFO L87 Difference]: Start difference. First operand 14472 states and 41306 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:58,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:37:58,745 INFO L93 Difference]: Finished difference Result 20857 states and 59711 transitions. [2022-02-10 22:37:58,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:37:58,746 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:37:58,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:37:58,783 INFO L225 Difference]: With dead ends: 20857 [2022-02-10 22:37:58,784 INFO L226 Difference]: Without dead ends: 20857 [2022-02-10 22:37:58,784 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=335, Invalid=1071, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:37:58,784 INFO L934 BasicCegarLoop]: 326 mSDtfsCounter, 794 mSDsluCounter, 2675 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 2937 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:37:58,784 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [794 Valid, 2937 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:37:58,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20857 states. [2022-02-10 22:37:59,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20857 to 14488. [2022-02-10 22:37:59,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14488 states, 14487 states have (on average 2.8553875888727824) internal successors, (41366), 14487 states have internal predecessors, (41366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:59,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14488 states to 14488 states and 41366 transitions. [2022-02-10 22:37:59,103 INFO L78 Accepts]: Start accepts. Automaton has 14488 states and 41366 transitions. Word has length 177 [2022-02-10 22:37:59,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:37:59,103 INFO L470 AbstractCegarLoop]: Abstraction has 14488 states and 41366 transitions. [2022-02-10 22:37:59,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:37:59,104 INFO L276 IsEmpty]: Start isEmpty. Operand 14488 states and 41366 transitions. [2022-02-10 22:37:59,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:37:59,125 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:37:59,125 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:37:59,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2022-02-10 22:37:59,125 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:37:59,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:37:59,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1069874186, now seen corresponding path program 51 times [2022-02-10 22:37:59,127 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:37:59,127 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552114030] [2022-02-10 22:37:59,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:37:59,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:37:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:37:59,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:37:59,439 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:37:59,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552114030] [2022-02-10 22:37:59,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552114030] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:37:59,439 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:37:59,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:37:59,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487485005] [2022-02-10 22:37:59,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:37:59,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:37:59,440 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:37:59,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:37:59,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:37:59,440 INFO L87 Difference]: Start difference. First operand 14488 states and 41366 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:00,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:00,036 INFO L93 Difference]: Finished difference Result 20811 states and 59581 transitions. [2022-02-10 22:38:00,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:38:00,036 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:38:00,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:00,074 INFO L225 Difference]: With dead ends: 20811 [2022-02-10 22:38:00,074 INFO L226 Difference]: Without dead ends: 20811 [2022-02-10 22:38:00,074 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=330, Invalid=1002, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:38:00,075 INFO L934 BasicCegarLoop]: 325 mSDtfsCounter, 813 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 2967 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:00,075 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [813 Valid, 2967 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:38:00,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20811 states. [2022-02-10 22:38:00,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20811 to 14496. [2022-02-10 22:38:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14496 states, 14495 states have (on average 2.8553294239392892) internal successors, (41388), 14495 states have internal predecessors, (41388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:00,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14496 states to 14496 states and 41388 transitions. [2022-02-10 22:38:00,337 INFO L78 Accepts]: Start accepts. Automaton has 14496 states and 41388 transitions. Word has length 177 [2022-02-10 22:38:00,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:00,338 INFO L470 AbstractCegarLoop]: Abstraction has 14496 states and 41388 transitions. [2022-02-10 22:38:00,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:00,338 INFO L276 IsEmpty]: Start isEmpty. Operand 14496 states and 41388 transitions. [2022-02-10 22:38:00,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:38:00,361 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:00,361 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:00,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2022-02-10 22:38:00,361 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:00,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:00,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1271423076, now seen corresponding path program 57 times [2022-02-10 22:38:00,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:00,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910157582] [2022-02-10 22:38:00,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:00,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:00,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:00,676 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:00,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910157582] [2022-02-10 22:38:00,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910157582] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:00,676 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:00,676 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:38:00,676 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662553765] [2022-02-10 22:38:00,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:00,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:38:00,676 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:00,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:38:00,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:38:00,677 INFO L87 Difference]: Start difference. First operand 14496 states and 41388 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:01,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:01,237 INFO L93 Difference]: Finished difference Result 21053 states and 60267 transitions. [2022-02-10 22:38:01,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 22:38:01,237 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:38:01,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:01,275 INFO L225 Difference]: With dead ends: 21053 [2022-02-10 22:38:01,275 INFO L226 Difference]: Without dead ends: 21053 [2022-02-10 22:38:01,276 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=303, Invalid=1029, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:38:01,276 INFO L934 BasicCegarLoop]: 332 mSDtfsCounter, 743 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 2960 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:01,276 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 2960 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:38:01,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21053 states. [2022-02-10 22:38:01,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21053 to 14488. [2022-02-10 22:38:01,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14488 states, 14487 states have (on average 2.8553875888727824) internal successors, (41366), 14487 states have internal predecessors, (41366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:01,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14488 states to 14488 states and 41366 transitions. [2022-02-10 22:38:01,543 INFO L78 Accepts]: Start accepts. Automaton has 14488 states and 41366 transitions. Word has length 177 [2022-02-10 22:38:01,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:01,543 INFO L470 AbstractCegarLoop]: Abstraction has 14488 states and 41366 transitions. [2022-02-10 22:38:01,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:01,544 INFO L276 IsEmpty]: Start isEmpty. Operand 14488 states and 41366 transitions. [2022-02-10 22:38:01,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:38:01,564 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:01,565 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:01,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2022-02-10 22:38:01,565 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:01,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:01,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1401784550, now seen corresponding path program 54 times [2022-02-10 22:38:01,565 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:01,565 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567308791] [2022-02-10 22:38:01,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:01,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:01,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:01,876 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:01,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567308791] [2022-02-10 22:38:01,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567308791] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:01,876 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:01,876 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:38:01,877 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107549415] [2022-02-10 22:38:01,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:01,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:38:01,877 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:01,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:38:01,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:38:01,877 INFO L87 Difference]: Start difference. First operand 14488 states and 41366 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:02,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:02,391 INFO L93 Difference]: Finished difference Result 21157 states and 60561 transitions. [2022-02-10 22:38:02,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 22:38:02,391 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:38:02,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:02,430 INFO L225 Difference]: With dead ends: 21157 [2022-02-10 22:38:02,430 INFO L226 Difference]: Without dead ends: 21157 [2022-02-10 22:38:02,431 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=297, Invalid=963, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 22:38:02,431 INFO L934 BasicCegarLoop]: 332 mSDtfsCounter, 1178 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 2345 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:02,431 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1178 Valid, 2345 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:38:02,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21157 states. [2022-02-10 22:38:02,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21157 to 14464. [2022-02-10 22:38:02,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14464 states, 14463 states have (on average 2.853903062988315) internal successors, (41276), 14463 states have internal predecessors, (41276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:02,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14464 states to 14464 states and 41276 transitions. [2022-02-10 22:38:02,702 INFO L78 Accepts]: Start accepts. Automaton has 14464 states and 41276 transitions. Word has length 177 [2022-02-10 22:38:02,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:02,702 INFO L470 AbstractCegarLoop]: Abstraction has 14464 states and 41276 transitions. [2022-02-10 22:38:02,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:02,702 INFO L276 IsEmpty]: Start isEmpty. Operand 14464 states and 41276 transitions. [2022-02-10 22:38:02,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:38:02,722 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:02,722 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:02,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2022-02-10 22:38:02,722 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:02,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:02,722 INFO L85 PathProgramCache]: Analyzing trace with hash 920866516, now seen corresponding path program 55 times [2022-02-10 22:38:02,723 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:02,723 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557479263] [2022-02-10 22:38:02,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:02,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:03,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:03,043 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:03,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557479263] [2022-02-10 22:38:03,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557479263] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:03,044 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:03,044 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:38:03,044 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140288003] [2022-02-10 22:38:03,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:03,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:38:03,044 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:03,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:38:03,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:38:03,044 INFO L87 Difference]: Start difference. First operand 14464 states and 41276 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:03,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:03,597 INFO L93 Difference]: Finished difference Result 20921 states and 59911 transitions. [2022-02-10 22:38:03,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:38:03,597 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:38:03,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:03,639 INFO L225 Difference]: With dead ends: 20921 [2022-02-10 22:38:03,639 INFO L226 Difference]: Without dead ends: 20921 [2022-02-10 22:38:03,639 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=337, Invalid=1069, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:38:03,640 INFO L934 BasicCegarLoop]: 327 mSDtfsCounter, 984 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:03,640 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 2411 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:38:03,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20921 states. [2022-02-10 22:38:03,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20921 to 14496. [2022-02-10 22:38:03,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14496 states, 14495 states have (on average 2.8553294239392892) internal successors, (41388), 14495 states have internal predecessors, (41388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:03,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14496 states to 14496 states and 41388 transitions. [2022-02-10 22:38:03,922 INFO L78 Accepts]: Start accepts. Automaton has 14496 states and 41388 transitions. Word has length 177 [2022-02-10 22:38:03,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:03,922 INFO L470 AbstractCegarLoop]: Abstraction has 14496 states and 41388 transitions. [2022-02-10 22:38:03,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:03,922 INFO L276 IsEmpty]: Start isEmpty. Operand 14496 states and 41388 transitions. [2022-02-10 22:38:03,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:38:03,943 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:03,943 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:03,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2022-02-10 22:38:03,943 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:03,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:03,944 INFO L85 PathProgramCache]: Analyzing trace with hash -606047046, now seen corresponding path program 52 times [2022-02-10 22:38:03,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:03,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960227468] [2022-02-10 22:38:03,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:03,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:04,265 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:04,265 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960227468] [2022-02-10 22:38:04,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960227468] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:04,265 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:04,265 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:38:04,266 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689615565] [2022-02-10 22:38:04,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:04,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:38:04,266 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:04,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:38:04,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:38:04,266 INFO L87 Difference]: Start difference. First operand 14496 states and 41388 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:04,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:04,863 INFO L93 Difference]: Finished difference Result 20883 states and 59803 transitions. [2022-02-10 22:38:04,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:38:04,863 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:38:04,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:04,900 INFO L225 Difference]: With dead ends: 20883 [2022-02-10 22:38:04,900 INFO L226 Difference]: Without dead ends: 20883 [2022-02-10 22:38:04,900 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=332, Invalid=1000, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:38:04,901 INFO L934 BasicCegarLoop]: 326 mSDtfsCounter, 1142 mSDsluCounter, 2453 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 2722 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:04,901 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 2722 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:38:04,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20883 states. [2022-02-10 22:38:05,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20883 to 14512. [2022-02-10 22:38:05,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14512 states, 14511 states have (on average 2.855213286472331) internal successors, (41432), 14511 states have internal predecessors, (41432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:05,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14512 states to 14512 states and 41432 transitions. [2022-02-10 22:38:05,152 INFO L78 Accepts]: Start accepts. Automaton has 14512 states and 41432 transitions. Word has length 177 [2022-02-10 22:38:05,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:05,152 INFO L470 AbstractCegarLoop]: Abstraction has 14512 states and 41432 transitions. [2022-02-10 22:38:05,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:05,152 INFO L276 IsEmpty]: Start isEmpty. Operand 14512 states and 41432 transitions. [2022-02-10 22:38:05,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:38:05,173 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:05,173 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:05,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2022-02-10 22:38:05,173 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:05,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:05,173 INFO L85 PathProgramCache]: Analyzing trace with hash -404498156, now seen corresponding path program 58 times [2022-02-10 22:38:05,173 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:05,173 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805900142] [2022-02-10 22:38:05,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:05,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:05,507 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:05,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805900142] [2022-02-10 22:38:05,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805900142] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:05,507 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:05,508 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:38:05,508 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395275520] [2022-02-10 22:38:05,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:05,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:38:05,508 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:05,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:38:05,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:38:05,508 INFO L87 Difference]: Start difference. First operand 14512 states and 41432 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:06,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:06,100 INFO L93 Difference]: Finished difference Result 21141 states and 60533 transitions. [2022-02-10 22:38:06,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:38:06,100 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:38:06,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:06,146 INFO L225 Difference]: With dead ends: 21141 [2022-02-10 22:38:06,146 INFO L226 Difference]: Without dead ends: 21141 [2022-02-10 22:38:06,146 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:38:06,146 INFO L934 BasicCegarLoop]: 336 mSDtfsCounter, 873 mSDsluCounter, 2333 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:06,147 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 2620 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:38:06,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21141 states. [2022-02-10 22:38:06,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21141 to 14512. [2022-02-10 22:38:06,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14512 states, 14511 states have (on average 2.855213286472331) internal successors, (41432), 14511 states have internal predecessors, (41432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:06,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14512 states to 14512 states and 41432 transitions. [2022-02-10 22:38:06,442 INFO L78 Accepts]: Start accepts. Automaton has 14512 states and 41432 transitions. Word has length 177 [2022-02-10 22:38:06,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:06,442 INFO L470 AbstractCegarLoop]: Abstraction has 14512 states and 41432 transitions. [2022-02-10 22:38:06,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:06,442 INFO L276 IsEmpty]: Start isEmpty. Operand 14512 states and 41432 transitions. [2022-02-10 22:38:06,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:38:06,464 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:06,464 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:06,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2022-02-10 22:38:06,464 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:06,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:06,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1217261514, now seen corresponding path program 56 times [2022-02-10 22:38:06,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:06,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691332140] [2022-02-10 22:38:06,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:06,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:06,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:06,813 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:06,813 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691332140] [2022-02-10 22:38:06,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691332140] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:06,813 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:06,813 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:38:06,813 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248426985] [2022-02-10 22:38:06,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:06,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:38:06,813 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:06,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:38:06,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:38:06,814 INFO L87 Difference]: Start difference. First operand 14512 states and 41432 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:07,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:07,465 INFO L93 Difference]: Finished difference Result 21253 states and 60849 transitions. [2022-02-10 22:38:07,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:38:07,466 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:38:07,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:07,502 INFO L225 Difference]: With dead ends: 21253 [2022-02-10 22:38:07,503 INFO L226 Difference]: Without dead ends: 21253 [2022-02-10 22:38:07,503 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:38:07,503 INFO L934 BasicCegarLoop]: 316 mSDtfsCounter, 953 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 2805 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:07,503 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [953 Valid, 2805 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:38:07,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21253 states. [2022-02-10 22:38:07,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21253 to 14504. [2022-02-10 22:38:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14504 states, 14503 states have (on average 2.854168103151072) internal successors, (41394), 14503 states have internal predecessors, (41394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:07,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14504 states to 14504 states and 41394 transitions. [2022-02-10 22:38:07,768 INFO L78 Accepts]: Start accepts. Automaton has 14504 states and 41394 transitions. Word has length 177 [2022-02-10 22:38:07,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:07,768 INFO L470 AbstractCegarLoop]: Abstraction has 14504 states and 41394 transitions. [2022-02-10 22:38:07,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:07,768 INFO L276 IsEmpty]: Start isEmpty. Operand 14504 states and 41394 transitions. [2022-02-10 22:38:07,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:38:07,790 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:07,790 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:07,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2022-02-10 22:38:07,790 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:07,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:07,790 INFO L85 PathProgramCache]: Analyzing trace with hash -2039177010, now seen corresponding path program 59 times [2022-02-10 22:38:07,790 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:07,790 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639026387] [2022-02-10 22:38:07,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:07,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:08,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:08,098 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:08,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639026387] [2022-02-10 22:38:08,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639026387] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:08,098 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:08,099 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:38:08,099 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87673401] [2022-02-10 22:38:08,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:08,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:38:08,099 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:08,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:38:08,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:38:08,099 INFO L87 Difference]: Start difference. First operand 14504 states and 41394 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:08,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:08,735 INFO L93 Difference]: Finished difference Result 21477 states and 61465 transitions. [2022-02-10 22:38:08,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 22:38:08,736 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:38:08,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:08,776 INFO L225 Difference]: With dead ends: 21477 [2022-02-10 22:38:08,776 INFO L226 Difference]: Without dead ends: 21477 [2022-02-10 22:38:08,776 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=365, Invalid=1195, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 22:38:08,776 INFO L934 BasicCegarLoop]: 349 mSDtfsCounter, 984 mSDsluCounter, 2964 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 3253 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:08,776 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 3253 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:38:08,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21477 states. [2022-02-10 22:38:08,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21477 to 14488. [2022-02-10 22:38:09,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14488 states, 14487 states have (on average 2.854283150410713) internal successors, (41350), 14487 states have internal predecessors, (41350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:09,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14488 states to 14488 states and 41350 transitions. [2022-02-10 22:38:09,045 INFO L78 Accepts]: Start accepts. Automaton has 14488 states and 41350 transitions. Word has length 177 [2022-02-10 22:38:09,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:09,046 INFO L470 AbstractCegarLoop]: Abstraction has 14488 states and 41350 transitions. [2022-02-10 22:38:09,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:09,046 INFO L276 IsEmpty]: Start isEmpty. Operand 14488 states and 41350 transitions. [2022-02-10 22:38:09,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:38:09,066 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:09,066 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:09,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2022-02-10 22:38:09,066 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:09,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:09,066 INFO L85 PathProgramCache]: Analyzing trace with hash -586109690, now seen corresponding path program 57 times [2022-02-10 22:38:09,066 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:09,066 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036314765] [2022-02-10 22:38:09,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:09,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:09,371 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:09,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036314765] [2022-02-10 22:38:09,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036314765] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:09,371 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:09,371 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:38:09,371 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857698883] [2022-02-10 22:38:09,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:09,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:38:09,371 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:09,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:38:09,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:38:09,372 INFO L87 Difference]: Start difference. First operand 14488 states and 41350 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:09,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:09,933 INFO L93 Difference]: Finished difference Result 21261 states and 60855 transitions. [2022-02-10 22:38:09,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 22:38:09,934 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:38:09,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:09,973 INFO L225 Difference]: With dead ends: 21261 [2022-02-10 22:38:09,973 INFO L226 Difference]: Without dead ends: 21261 [2022-02-10 22:38:09,973 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=357, Invalid=1125, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:38:09,973 INFO L934 BasicCegarLoop]: 336 mSDtfsCounter, 1090 mSDsluCounter, 2305 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 2593 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:09,973 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1090 Valid, 2593 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:38:09,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21261 states. [2022-02-10 22:38:10,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21261 to 14504. [2022-02-10 22:38:10,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14504 states, 14503 states have (on average 2.854168103151072) internal successors, (41394), 14503 states have internal predecessors, (41394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:10,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14504 states to 14504 states and 41394 transitions. [2022-02-10 22:38:10,246 INFO L78 Accepts]: Start accepts. Automaton has 14504 states and 41394 transitions. Word has length 177 [2022-02-10 22:38:10,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:10,246 INFO L470 AbstractCegarLoop]: Abstraction has 14504 states and 41394 transitions. [2022-02-10 22:38:10,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:10,246 INFO L276 IsEmpty]: Start isEmpty. Operand 14504 states and 41394 transitions. [2022-02-10 22:38:10,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:38:10,267 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:10,267 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:10,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2022-02-10 22:38:10,267 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:10,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:10,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1614494184, now seen corresponding path program 58 times [2022-02-10 22:38:10,267 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:10,268 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736093256] [2022-02-10 22:38:10,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:10,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:10,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:10,575 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:10,575 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736093256] [2022-02-10 22:38:10,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736093256] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:10,575 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:10,575 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:38:10,575 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430832201] [2022-02-10 22:38:10,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:10,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:38:10,575 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:10,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:38:10,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:38:10,576 INFO L87 Difference]: Start difference. First operand 14504 states and 41394 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:11,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:11,236 INFO L93 Difference]: Finished difference Result 22125 states and 63327 transitions. [2022-02-10 22:38:11,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 22:38:11,237 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:38:11,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:11,275 INFO L225 Difference]: With dead ends: 22125 [2022-02-10 22:38:11,275 INFO L226 Difference]: Without dead ends: 22125 [2022-02-10 22:38:11,276 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=386, Invalid=1254, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 22:38:11,276 INFO L934 BasicCegarLoop]: 349 mSDtfsCounter, 1040 mSDsluCounter, 2660 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 2961 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:11,276 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 2961 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:38:11,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22125 states. [2022-02-10 22:38:11,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22125 to 14440. [2022-02-10 22:38:11,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14440 states, 14439 states have (on average 2.854075767019877) internal successors, (41210), 14439 states have internal predecessors, (41210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:11,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14440 states to 14440 states and 41210 transitions. [2022-02-10 22:38:11,540 INFO L78 Accepts]: Start accepts. Automaton has 14440 states and 41210 transitions. Word has length 177 [2022-02-10 22:38:11,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:11,540 INFO L470 AbstractCegarLoop]: Abstraction has 14440 states and 41210 transitions. [2022-02-10 22:38:11,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:11,540 INFO L276 IsEmpty]: Start isEmpty. Operand 14440 states and 41210 transitions. [2022-02-10 22:38:11,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:38:11,561 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:11,561 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:11,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2022-02-10 22:38:11,561 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:11,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:11,561 INFO L85 PathProgramCache]: Analyzing trace with hash 64342592, now seen corresponding path program 60 times [2022-02-10 22:38:11,561 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:11,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124793444] [2022-02-10 22:38:11,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:11,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:11,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:11,819 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:11,819 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124793444] [2022-02-10 22:38:11,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124793444] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:11,819 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:11,819 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:38:11,819 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221363518] [2022-02-10 22:38:11,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:11,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:38:11,820 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:11,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:38:11,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:38:11,820 INFO L87 Difference]: Start difference. First operand 14440 states and 41210 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:12,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:12,516 INFO L93 Difference]: Finished difference Result 24312 states and 69544 transitions. [2022-02-10 22:38:12,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 22:38:12,516 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:38:12,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:12,562 INFO L225 Difference]: With dead ends: 24312 [2022-02-10 22:38:12,562 INFO L226 Difference]: Without dead ends: 24312 [2022-02-10 22:38:12,562 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=393, Invalid=1247, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 22:38:12,562 INFO L934 BasicCegarLoop]: 426 mSDtfsCounter, 1134 mSDsluCounter, 3467 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 3813 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:12,562 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1134 Valid, 3813 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:38:12,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24312 states. [2022-02-10 22:38:12,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24312 to 14440. [2022-02-10 22:38:12,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14440 states, 14439 states have (on average 2.854075767019877) internal successors, (41210), 14439 states have internal predecessors, (41210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:12,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14440 states to 14440 states and 41210 transitions. [2022-02-10 22:38:12,858 INFO L78 Accepts]: Start accepts. Automaton has 14440 states and 41210 transitions. Word has length 177 [2022-02-10 22:38:12,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:12,859 INFO L470 AbstractCegarLoop]: Abstraction has 14440 states and 41210 transitions. [2022-02-10 22:38:12,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:12,859 INFO L276 IsEmpty]: Start isEmpty. Operand 14440 states and 41210 transitions. [2022-02-10 22:38:12,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:38:12,879 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:12,880 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:12,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2022-02-10 22:38:12,880 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:12,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:12,880 INFO L85 PathProgramCache]: Analyzing trace with hash 973513084, now seen corresponding path program 59 times [2022-02-10 22:38:12,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:12,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497766657] [2022-02-10 22:38:12,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:12,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:13,158 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:13,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497766657] [2022-02-10 22:38:13,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497766657] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:38:13,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154104021] [2022-02-10 22:38:13,159 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:38:13,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:38:13,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:38:13,160 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:38:13,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-10 22:38:13,376 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:38:13,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:38:13,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 70 conjunts are in the unsatisfiable core [2022-02-10 22:38:13,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:38:13,512 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:38:13,619 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:38:13,920 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 22:38:13,921 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 22:38:14,080 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:38:14,329 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:38:14,424 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:38:14,810 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-02-10 22:38:14,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:38:14,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:38:15,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:15,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154104021] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:38:15,179 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:38:15,179 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 9] total 49 [2022-02-10 22:38:15,179 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635027280] [2022-02-10 22:38:15,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:38:15,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-10 22:38:15,179 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:15,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-10 22:38:15,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=2125, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 22:38:15,180 INFO L87 Difference]: Start difference. First operand 14440 states and 41210 transitions. Second operand has 49 states, 49 states have (on average 7.816326530612245) internal successors, (383), 49 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:21,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:21,182 INFO L93 Difference]: Finished difference Result 44620 states and 128463 transitions. [2022-02-10 22:38:21,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-10 22:38:21,182 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 7.816326530612245) internal successors, (383), 49 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:38:21,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:21,271 INFO L225 Difference]: With dead ends: 44620 [2022-02-10 22:38:21,271 INFO L226 Difference]: Without dead ends: 44620 [2022-02-10 22:38:21,272 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3029 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2497, Invalid=9713, Unknown=0, NotChecked=0, Total=12210 [2022-02-10 22:38:21,272 INFO L934 BasicCegarLoop]: 449 mSDtfsCounter, 4001 mSDsluCounter, 6145 mSDsCounter, 0 mSdLazyCounter, 2033 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4001 SdHoareTripleChecker+Valid, 6454 SdHoareTripleChecker+Invalid, 2078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:21,272 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [4001 Valid, 6454 Invalid, 2078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2033 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-10 22:38:21,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44620 states. [2022-02-10 22:38:21,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44620 to 14440. [2022-02-10 22:38:21,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14440 states, 14439 states have (on average 2.854075767019877) internal successors, (41210), 14439 states have internal predecessors, (41210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:21,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14440 states to 14440 states and 41210 transitions. [2022-02-10 22:38:21,728 INFO L78 Accepts]: Start accepts. Automaton has 14440 states and 41210 transitions. Word has length 177 [2022-02-10 22:38:21,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:21,728 INFO L470 AbstractCegarLoop]: Abstraction has 14440 states and 41210 transitions. [2022-02-10 22:38:21,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 7.816326530612245) internal successors, (383), 49 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:21,728 INFO L276 IsEmpty]: Start isEmpty. Operand 14440 states and 41210 transitions. [2022-02-10 22:38:21,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:38:21,748 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:21,748 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:21,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-02-10 22:38:21,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable239 [2022-02-10 22:38:21,963 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:21,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:21,964 INFO L85 PathProgramCache]: Analyzing trace with hash 660843338, now seen corresponding path program 60 times [2022-02-10 22:38:21,964 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:21,964 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297679601] [2022-02-10 22:38:21,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:21,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:22,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:22,271 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:22,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297679601] [2022-02-10 22:38:22,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297679601] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:22,271 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:22,271 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:38:22,271 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705627080] [2022-02-10 22:38:22,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:22,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:38:22,271 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:22,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:38:22,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:38:22,272 INFO L87 Difference]: Start difference. First operand 14440 states and 41210 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:22,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:22,852 INFO L93 Difference]: Finished difference Result 20089 states and 57355 transitions. [2022-02-10 22:38:22,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 22:38:22,852 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:38:22,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:22,887 INFO L225 Difference]: With dead ends: 20089 [2022-02-10 22:38:22,887 INFO L226 Difference]: Without dead ends: 20089 [2022-02-10 22:38:22,887 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=1017, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:38:22,887 INFO L934 BasicCegarLoop]: 333 mSDtfsCounter, 840 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 3088 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:22,887 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [840 Valid, 3088 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:38:22,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20089 states. [2022-02-10 22:38:23,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20089 to 14440. [2022-02-10 22:38:23,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14440 states, 14439 states have (on average 2.8535217120299188) internal successors, (41202), 14439 states have internal predecessors, (41202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:23,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14440 states to 14440 states and 41202 transitions. [2022-02-10 22:38:23,127 INFO L78 Accepts]: Start accepts. Automaton has 14440 states and 41202 transitions. Word has length 177 [2022-02-10 22:38:23,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:23,127 INFO L470 AbstractCegarLoop]: Abstraction has 14440 states and 41202 transitions. [2022-02-10 22:38:23,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:23,127 INFO L276 IsEmpty]: Start isEmpty. Operand 14440 states and 41202 transitions. [2022-02-10 22:38:23,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:38:23,146 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:23,147 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:23,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2022-02-10 22:38:23,147 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:23,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:23,147 INFO L85 PathProgramCache]: Analyzing trace with hash -866070224, now seen corresponding path program 53 times [2022-02-10 22:38:23,147 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:23,147 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490352168] [2022-02-10 22:38:23,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:23,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:23,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:23,452 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:23,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490352168] [2022-02-10 22:38:23,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490352168] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:23,452 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:23,452 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:38:23,452 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295141009] [2022-02-10 22:38:23,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:23,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:38:23,452 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:23,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:38:23,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:38:23,453 INFO L87 Difference]: Start difference. First operand 14440 states and 41202 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:24,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:24,059 INFO L93 Difference]: Finished difference Result 19929 states and 56755 transitions. [2022-02-10 22:38:24,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 22:38:24,060 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:38:24,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:24,095 INFO L225 Difference]: With dead ends: 19929 [2022-02-10 22:38:24,095 INFO L226 Difference]: Without dead ends: 19929 [2022-02-10 22:38:24,095 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 22:38:24,095 INFO L934 BasicCegarLoop]: 341 mSDtfsCounter, 1171 mSDsluCounter, 3078 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 3349 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:24,096 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 3349 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:38:24,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19929 states. [2022-02-10 22:38:24,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19929 to 14288. [2022-02-10 22:38:24,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14288 states, 14287 states have (on average 2.845103940645342) internal successors, (40648), 14287 states have internal predecessors, (40648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:24,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14288 states to 14288 states and 40648 transitions. [2022-02-10 22:38:24,336 INFO L78 Accepts]: Start accepts. Automaton has 14288 states and 40648 transitions. Word has length 177 [2022-02-10 22:38:24,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:24,336 INFO L470 AbstractCegarLoop]: Abstraction has 14288 states and 40648 transitions. [2022-02-10 22:38:24,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:24,336 INFO L276 IsEmpty]: Start isEmpty. Operand 14288 states and 40648 transitions. [2022-02-10 22:38:24,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:38:24,356 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:24,356 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:24,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2022-02-10 22:38:24,357 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:24,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:24,357 INFO L85 PathProgramCache]: Analyzing trace with hash -664521334, now seen corresponding path program 61 times [2022-02-10 22:38:24,357 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:24,357 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631964618] [2022-02-10 22:38:24,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:24,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:24,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:24,673 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:24,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631964618] [2022-02-10 22:38:24,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631964618] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:24,674 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:24,674 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:38:24,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162392634] [2022-02-10 22:38:24,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:24,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:38:24,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:24,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:38:24,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:38:24,674 INFO L87 Difference]: Start difference. First operand 14288 states and 40648 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:25,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:25,227 INFO L93 Difference]: Finished difference Result 19971 states and 56867 transitions. [2022-02-10 22:38:25,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 22:38:25,227 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:38:25,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:25,263 INFO L225 Difference]: With dead ends: 19971 [2022-02-10 22:38:25,264 INFO L226 Difference]: Without dead ends: 19971 [2022-02-10 22:38:25,264 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 22:38:25,264 INFO L934 BasicCegarLoop]: 346 mSDtfsCounter, 836 mSDsluCounter, 3007 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 3283 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:25,264 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [836 Valid, 3283 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:38:25,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19971 states. [2022-02-10 22:38:25,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19971 to 14288. [2022-02-10 22:38:25,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14288 states, 14287 states have (on average 2.845103940645342) internal successors, (40648), 14287 states have internal predecessors, (40648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:25,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14288 states to 14288 states and 40648 transitions. [2022-02-10 22:38:25,510 INFO L78 Accepts]: Start accepts. Automaton has 14288 states and 40648 transitions. Word has length 177 [2022-02-10 22:38:25,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:25,510 INFO L470 AbstractCegarLoop]: Abstraction has 14288 states and 40648 transitions. [2022-02-10 22:38:25,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:25,510 INFO L276 IsEmpty]: Start isEmpty. Operand 14288 states and 40648 transitions. [2022-02-10 22:38:25,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:38:25,530 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:25,530 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:25,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2022-02-10 22:38:25,530 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:25,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:25,531 INFO L85 PathProgramCache]: Analyzing trace with hash 957238336, now seen corresponding path program 61 times [2022-02-10 22:38:25,531 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:25,531 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925138845] [2022-02-10 22:38:25,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:25,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:25,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:25,842 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:25,842 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925138845] [2022-02-10 22:38:25,842 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925138845] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:25,842 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:25,842 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:38:25,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674417790] [2022-02-10 22:38:25,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:25,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:38:25,842 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:25,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:38:25,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:38:25,843 INFO L87 Difference]: Start difference. First operand 14288 states and 40648 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:26,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:26,369 INFO L93 Difference]: Finished difference Result 20195 states and 57515 transitions. [2022-02-10 22:38:26,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 22:38:26,369 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:38:26,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:26,406 INFO L225 Difference]: With dead ends: 20195 [2022-02-10 22:38:26,406 INFO L226 Difference]: Without dead ends: 20195 [2022-02-10 22:38:26,406 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=917, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 22:38:26,406 INFO L934 BasicCegarLoop]: 333 mSDtfsCounter, 921 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:26,407 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [921 Valid, 2728 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:38:26,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20195 states. [2022-02-10 22:38:26,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20195 to 14280. [2022-02-10 22:38:26,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14280 states, 14279 states have (on average 2.8440366972477062) internal successors, (40610), 14279 states have internal predecessors, (40610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:26,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14280 states to 14280 states and 40610 transitions. [2022-02-10 22:38:26,664 INFO L78 Accepts]: Start accepts. Automaton has 14280 states and 40610 transitions. Word has length 177 [2022-02-10 22:38:26,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:26,664 INFO L470 AbstractCegarLoop]: Abstraction has 14280 states and 40610 transitions. [2022-02-10 22:38:26,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:26,664 INFO L276 IsEmpty]: Start isEmpty. Operand 14280 states and 40610 transitions. [2022-02-10 22:38:26,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:38:26,684 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:26,684 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:26,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2022-02-10 22:38:26,684 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:26,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:26,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1995767108, now seen corresponding path program 62 times [2022-02-10 22:38:26,684 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:26,684 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507870879] [2022-02-10 22:38:26,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:26,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:27,005 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:27,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507870879] [2022-02-10 22:38:27,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507870879] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:27,006 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:27,006 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-10 22:38:27,006 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807721793] [2022-02-10 22:38:27,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:27,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:38:27,006 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:27,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:38:27,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:38:27,006 INFO L87 Difference]: Start difference. First operand 14280 states and 40610 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:27,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:27,578 INFO L93 Difference]: Finished difference Result 20379 states and 58013 transitions. [2022-02-10 22:38:27,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:38:27,578 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:38:27,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:27,625 INFO L225 Difference]: With dead ends: 20379 [2022-02-10 22:38:27,626 INFO L226 Difference]: Without dead ends: 20379 [2022-02-10 22:38:27,626 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=324, Invalid=1082, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:38:27,626 INFO L934 BasicCegarLoop]: 363 mSDtfsCounter, 1114 mSDsluCounter, 2825 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:27,626 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1114 Valid, 3122 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:38:27,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20379 states. [2022-02-10 22:38:27,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20379 to 14280. [2022-02-10 22:38:27,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14280 states, 14279 states have (on average 2.8440366972477062) internal successors, (40610), 14279 states have internal predecessors, (40610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:27,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14280 states to 14280 states and 40610 transitions. [2022-02-10 22:38:27,940 INFO L78 Accepts]: Start accepts. Automaton has 14280 states and 40610 transitions. Word has length 177 [2022-02-10 22:38:27,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:27,940 INFO L470 AbstractCegarLoop]: Abstraction has 14280 states and 40610 transitions. [2022-02-10 22:38:27,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:27,941 INFO L276 IsEmpty]: Start isEmpty. Operand 14280 states and 40610 transitions. [2022-02-10 22:38:27,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:38:27,960 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:27,960 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:27,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2022-02-10 22:38:27,960 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:27,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:27,961 INFO L85 PathProgramCache]: Analyzing trace with hash -846132868, now seen corresponding path program 62 times [2022-02-10 22:38:27,961 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:27,961 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79627704] [2022-02-10 22:38:27,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:27,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:28,265 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:28,265 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79627704] [2022-02-10 22:38:28,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79627704] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:28,265 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:28,265 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:38:28,265 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65125396] [2022-02-10 22:38:28,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:28,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:38:28,265 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:28,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:38:28,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:38:28,266 INFO L87 Difference]: Start difference. First operand 14280 states and 40610 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:28,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:28,873 INFO L93 Difference]: Finished difference Result 20291 states and 57779 transitions. [2022-02-10 22:38:28,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:38:28,874 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:38:28,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:28,908 INFO L225 Difference]: With dead ends: 20291 [2022-02-10 22:38:28,908 INFO L226 Difference]: Without dead ends: 20291 [2022-02-10 22:38:28,909 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:38:28,909 INFO L934 BasicCegarLoop]: 357 mSDtfsCounter, 1191 mSDsluCounter, 3058 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 3343 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:28,909 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1191 Valid, 3343 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:38:28,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20291 states. [2022-02-10 22:38:29,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20291 to 14312. [2022-02-10 22:38:29,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14312 states, 14311 states have (on average 2.843826427223814) internal successors, (40698), 14311 states have internal predecessors, (40698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:29,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14312 states to 14312 states and 40698 transitions. [2022-02-10 22:38:29,153 INFO L78 Accepts]: Start accepts. Automaton has 14312 states and 40698 transitions. Word has length 177 [2022-02-10 22:38:29,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:29,153 INFO L470 AbstractCegarLoop]: Abstraction has 14312 states and 40698 transitions. [2022-02-10 22:38:29,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:29,153 INFO L276 IsEmpty]: Start isEmpty. Operand 14312 states and 40698 transitions. [2022-02-10 22:38:29,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:38:29,173 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:29,173 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:29,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2022-02-10 22:38:29,173 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:29,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:29,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1354471006, now seen corresponding path program 63 times [2022-02-10 22:38:29,173 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:29,173 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658037936] [2022-02-10 22:38:29,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:29,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:29,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:29,462 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:29,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658037936] [2022-02-10 22:38:29,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658037936] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:29,463 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:29,463 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:38:29,463 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642499432] [2022-02-10 22:38:29,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:29,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:38:29,463 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:29,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:38:29,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:38:29,463 INFO L87 Difference]: Start difference. First operand 14312 states and 40698 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:30,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:30,120 INFO L93 Difference]: Finished difference Result 21155 states and 60251 transitions. [2022-02-10 22:38:30,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 22:38:30,120 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:38:30,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:30,156 INFO L225 Difference]: With dead ends: 21155 [2022-02-10 22:38:30,157 INFO L226 Difference]: Without dead ends: 21155 [2022-02-10 22:38:30,157 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=362, Invalid=1198, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 22:38:30,157 INFO L934 BasicCegarLoop]: 359 mSDtfsCounter, 1216 mSDsluCounter, 2930 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 3231 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:30,157 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1216 Valid, 3231 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:38:30,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21155 states. [2022-02-10 22:38:30,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21155 to 14256. [2022-02-10 22:38:30,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14256 states, 14255 states have (on average 2.842511399508944) internal successors, (40520), 14255 states have internal predecessors, (40520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:30,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14256 states to 14256 states and 40520 transitions. [2022-02-10 22:38:30,413 INFO L78 Accepts]: Start accepts. Automaton has 14256 states and 40520 transitions. Word has length 177 [2022-02-10 22:38:30,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:30,413 INFO L470 AbstractCegarLoop]: Abstraction has 14256 states and 40520 transitions. [2022-02-10 22:38:30,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:30,413 INFO L276 IsEmpty]: Start isEmpty. Operand 14256 states and 40520 transitions. [2022-02-10 22:38:30,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:38:30,432 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:30,432 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:30,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2022-02-10 22:38:30,433 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:30,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:30,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1320257190, now seen corresponding path program 63 times [2022-02-10 22:38:30,433 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:30,433 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108973141] [2022-02-10 22:38:30,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:30,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:30,672 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:30,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108973141] [2022-02-10 22:38:30,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108973141] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:30,673 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:30,673 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-10 22:38:30,673 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551351571] [2022-02-10 22:38:30,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:30,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:38:30,673 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:30,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:38:30,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:38:30,673 INFO L87 Difference]: Start difference. First operand 14256 states and 40520 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:31,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:31,271 INFO L93 Difference]: Finished difference Result 20454 states and 57958 transitions. [2022-02-10 22:38:31,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:38:31,271 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:38:31,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:31,306 INFO L225 Difference]: With dead ends: 20454 [2022-02-10 22:38:31,306 INFO L226 Difference]: Without dead ends: 20454 [2022-02-10 22:38:31,307 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=316, Invalid=1016, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:38:31,307 INFO L934 BasicCegarLoop]: 411 mSDtfsCounter, 901 mSDsluCounter, 3624 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 3949 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:31,307 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [901 Valid, 3949 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:38:31,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20454 states. [2022-02-10 22:38:31,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20454 to 14080. [2022-02-10 22:38:31,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14080 states, 14079 states have (on average 2.8396903189146956) internal successors, (39980), 14079 states have internal predecessors, (39980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:31,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14080 states to 14080 states and 39980 transitions. [2022-02-10 22:38:31,550 INFO L78 Accepts]: Start accepts. Automaton has 14080 states and 39980 transitions. Word has length 177 [2022-02-10 22:38:31,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:31,550 INFO L470 AbstractCegarLoop]: Abstraction has 14080 states and 39980 transitions. [2022-02-10 22:38:31,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:31,550 INFO L276 IsEmpty]: Start isEmpty. Operand 14080 states and 39980 transitions. [2022-02-10 22:38:31,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-10 22:38:31,569 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:31,569 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:31,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2022-02-10 22:38:31,569 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:31,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:31,570 INFO L85 PathProgramCache]: Analyzing trace with hash -2046167338, now seen corresponding path program 64 times [2022-02-10 22:38:31,570 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:31,570 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407900848] [2022-02-10 22:38:31,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:31,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:31,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:31,810 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:31,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407900848] [2022-02-10 22:38:31,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407900848] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:38:31,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640355735] [2022-02-10 22:38:31,810 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:38:31,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:38:31,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:38:31,812 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:38:31,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-10 22:38:32,039 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:38:32,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:38:32,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-10 22:38:32,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:38:32,481 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:38:32,602 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:38:32,646 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:38:32,904 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:38:32,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2022-02-10 22:38:32,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:38:32,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:38:33,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:33,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640355735] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:38:33,308 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:38:33,308 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 9] total 47 [2022-02-10 22:38:33,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085714112] [2022-02-10 22:38:33,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:38:33,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-10 22:38:33,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:33,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-10 22:38:33,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1973, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 22:38:33,310 INFO L87 Difference]: Start difference. First operand 14080 states and 39980 transitions. Second operand has 47 states, 47 states have (on average 8.361702127659575) internal successors, (393), 47 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:35,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:35,461 INFO L93 Difference]: Finished difference Result 20456 states and 57961 transitions. [2022-02-10 22:38:35,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-10 22:38:35,461 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 8.361702127659575) internal successors, (393), 47 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-02-10 22:38:35,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:35,496 INFO L225 Difference]: With dead ends: 20456 [2022-02-10 22:38:35,496 INFO L226 Difference]: Without dead ends: 20456 [2022-02-10 22:38:35,497 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1155, Invalid=5165, Unknown=0, NotChecked=0, Total=6320 [2022-02-10 22:38:35,497 INFO L934 BasicCegarLoop]: 477 mSDtfsCounter, 3040 mSDsluCounter, 7848 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3040 SdHoareTripleChecker+Valid, 8171 SdHoareTripleChecker+Invalid, 2442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 236 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:35,497 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3040 Valid, 8171 Invalid, 2442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2164 Invalid, 0 Unknown, 236 Unchecked, 0.8s Time] [2022-02-10 22:38:35,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20456 states. [2022-02-10 22:38:35,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20456 to 13828. [2022-02-10 22:38:35,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13828 states, 13827 states have (on average 2.839299920445505) internal successors, (39259), 13827 states have internal predecessors, (39259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:35,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13828 states to 13828 states and 39259 transitions. [2022-02-10 22:38:35,737 INFO L78 Accepts]: Start accepts. Automaton has 13828 states and 39259 transitions. Word has length 177 [2022-02-10 22:38:35,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:35,737 INFO L470 AbstractCegarLoop]: Abstraction has 13828 states and 39259 transitions. [2022-02-10 22:38:35,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 8.361702127659575) internal successors, (393), 47 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:35,738 INFO L276 IsEmpty]: Start isEmpty. Operand 13828 states and 39259 transitions. [2022-02-10 22:38:35,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-02-10 22:38:35,756 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:35,756 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:35,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-02-10 22:38:35,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable248 [2022-02-10 22:38:35,957 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:35,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:35,957 INFO L85 PathProgramCache]: Analyzing trace with hash 151786433, now seen corresponding path program 2 times [2022-02-10 22:38:35,957 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:35,957 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118860673] [2022-02-10 22:38:35,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:35,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:36,109 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:36,109 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118860673] [2022-02-10 22:38:36,109 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118860673] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:38:36,109 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170702442] [2022-02-10 22:38:36,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:38:36,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:38:36,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:38:36,111 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:38:36,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-10 22:38:36,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-02-10 22:38:36,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:38:36,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-10 22:38:36,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:38:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-02-10 22:38:36,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-10 22:38:36,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170702442] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:36,721 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-10 22:38:36,721 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 28 [2022-02-10 22:38:36,721 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57513402] [2022-02-10 22:38:36,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:36,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 22:38:36,722 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:36,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 22:38:36,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2022-02-10 22:38:36,722 INFO L87 Difference]: Start difference. First operand 13828 states and 39259 transitions. Second operand has 12 states, 12 states have (on average 14.416666666666666) internal successors, (173), 12 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:37,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:37,051 INFO L93 Difference]: Finished difference Result 14677 states and 41213 transitions. [2022-02-10 22:38:37,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 22:38:37,051 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.416666666666666) internal successors, (173), 12 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2022-02-10 22:38:37,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:37,077 INFO L225 Difference]: With dead ends: 14677 [2022-02-10 22:38:37,077 INFO L226 Difference]: Without dead ends: 14568 [2022-02-10 22:38:37,077 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=1311, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:38:37,077 INFO L934 BasicCegarLoop]: 238 mSDtfsCounter, 123 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:37,077 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 1194 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:38:37,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14568 states. [2022-02-10 22:38:37,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14568 to 8116. [2022-02-10 22:38:37,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8116 states, 8115 states have (on average 2.7693160813308686) internal successors, (22473), 8115 states have internal predecessors, (22473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:37,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8116 states to 8116 states and 22473 transitions. [2022-02-10 22:38:37,215 INFO L78 Accepts]: Start accepts. Automaton has 8116 states and 22473 transitions. Word has length 180 [2022-02-10 22:38:37,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:37,215 INFO L470 AbstractCegarLoop]: Abstraction has 8116 states and 22473 transitions. [2022-02-10 22:38:37,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.416666666666666) internal successors, (173), 12 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:37,215 INFO L276 IsEmpty]: Start isEmpty. Operand 8116 states and 22473 transitions. [2022-02-10 22:38:37,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-02-10 22:38:37,224 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:37,225 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:37,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-02-10 22:38:37,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable249 [2022-02-10 22:38:37,425 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:37,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:37,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1442899840, now seen corresponding path program 1 times [2022-02-10 22:38:37,425 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:37,425 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829340018] [2022-02-10 22:38:37,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:37,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:37,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:37,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:37,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829340018] [2022-02-10 22:38:37,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829340018] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:37,656 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:37,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-10 22:38:37,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420283928] [2022-02-10 22:38:37,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:37,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:38:37,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:37,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:38:37,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:38:37,657 INFO L87 Difference]: Start difference. First operand 8116 states and 22473 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:38,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:38,219 INFO L93 Difference]: Finished difference Result 14199 states and 38980 transitions. [2022-02-10 22:38:38,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 22:38:38,220 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-02-10 22:38:38,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:38,242 INFO L225 Difference]: With dead ends: 14199 [2022-02-10 22:38:38,242 INFO L226 Difference]: Without dead ends: 14199 [2022-02-10 22:38:38,242 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=287, Invalid=903, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 22:38:38,243 INFO L934 BasicCegarLoop]: 332 mSDtfsCounter, 1684 mSDsluCounter, 2779 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:38,243 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1684 Valid, 3040 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:38:38,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14199 states. [2022-02-10 22:38:38,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14199 to 8840. [2022-02-10 22:38:38,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8840 states, 8839 states have (on average 2.7695440660708224) internal successors, (24480), 8839 states have internal predecessors, (24480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:38,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8840 states to 8840 states and 24480 transitions. [2022-02-10 22:38:38,389 INFO L78 Accepts]: Start accepts. Automaton has 8840 states and 24480 transitions. Word has length 181 [2022-02-10 22:38:38,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:38,389 INFO L470 AbstractCegarLoop]: Abstraction has 8840 states and 24480 transitions. [2022-02-10 22:38:38,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:38,390 INFO L276 IsEmpty]: Start isEmpty. Operand 8840 states and 24480 transitions. [2022-02-10 22:38:38,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-02-10 22:38:38,401 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:38,401 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:38,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2022-02-10 22:38:38,401 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:38,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:38,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1693882528, now seen corresponding path program 1 times [2022-02-10 22:38:38,401 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:38,401 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247445797] [2022-02-10 22:38:38,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:38,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:38,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:38,502 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:38,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247445797] [2022-02-10 22:38:38,502 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247445797] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:38,502 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:38,502 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 22:38:38,502 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054243643] [2022-02-10 22:38:38,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:38,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 22:38:38,502 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:38,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 22:38:38,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:38:38,503 INFO L87 Difference]: Start difference. First operand 8840 states and 24480 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:38,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:38,605 INFO L93 Difference]: Finished difference Result 11008 states and 30400 transitions. [2022-02-10 22:38:38,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 22:38:38,605 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-02-10 22:38:38,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:38,622 INFO L225 Difference]: With dead ends: 11008 [2022-02-10 22:38:38,622 INFO L226 Difference]: Without dead ends: 10951 [2022-02-10 22:38:38,622 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-02-10 22:38:38,622 INFO L934 BasicCegarLoop]: 295 mSDtfsCounter, 215 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:38,622 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 1013 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:38:38,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10951 states. [2022-02-10 22:38:38,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10951 to 10124. [2022-02-10 22:38:38,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10124 states, 10123 states have (on average 2.777635088412526) internal successors, (28118), 10123 states have internal predecessors, (28118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:38,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10124 states to 10124 states and 28118 transitions. [2022-02-10 22:38:38,760 INFO L78 Accepts]: Start accepts. Automaton has 10124 states and 28118 transitions. Word has length 181 [2022-02-10 22:38:38,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:38,761 INFO L470 AbstractCegarLoop]: Abstraction has 10124 states and 28118 transitions. [2022-02-10 22:38:38,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:38,761 INFO L276 IsEmpty]: Start isEmpty. Operand 10124 states and 28118 transitions. [2022-02-10 22:38:38,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-02-10 22:38:38,773 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:38,773 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:38,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2022-02-10 22:38:38,773 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:38,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:38,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1303549216, now seen corresponding path program 2 times [2022-02-10 22:38:38,774 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:38,774 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330476539] [2022-02-10 22:38:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:38,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:38,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:38,840 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:38,840 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330476539] [2022-02-10 22:38:38,840 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330476539] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:38,840 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:38,840 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 22:38:38,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232621790] [2022-02-10 22:38:38,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:38,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 22:38:38,841 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:38,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 22:38:38,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:38:38,841 INFO L87 Difference]: Start difference. First operand 10124 states and 28118 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:38,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:38,976 INFO L93 Difference]: Finished difference Result 10919 states and 30212 transitions. [2022-02-10 22:38:38,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 22:38:38,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-02-10 22:38:38,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:38,993 INFO L225 Difference]: With dead ends: 10919 [2022-02-10 22:38:38,993 INFO L226 Difference]: Without dead ends: 10862 [2022-02-10 22:38:38,994 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-10 22:38:38,994 INFO L934 BasicCegarLoop]: 266 mSDtfsCounter, 95 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:38,994 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 1488 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:38:39,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10862 states. [2022-02-10 22:38:39,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10862 to 10163. [2022-02-10 22:38:39,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10163 states, 10162 states have (on average 2.777307616610903) internal successors, (28223), 10162 states have internal predecessors, (28223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:39,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10163 states to 10163 states and 28223 transitions. [2022-02-10 22:38:39,126 INFO L78 Accepts]: Start accepts. Automaton has 10163 states and 28223 transitions. Word has length 181 [2022-02-10 22:38:39,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:39,126 INFO L470 AbstractCegarLoop]: Abstraction has 10163 states and 28223 transitions. [2022-02-10 22:38:39,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:39,126 INFO L276 IsEmpty]: Start isEmpty. Operand 10163 states and 28223 transitions. [2022-02-10 22:38:39,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-02-10 22:38:39,139 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:39,139 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:39,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2022-02-10 22:38:39,140 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:39,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:39,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1045782252, now seen corresponding path program 3 times [2022-02-10 22:38:39,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:39,140 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132654326] [2022-02-10 22:38:39,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:39,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:39,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:39,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:39,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132654326] [2022-02-10 22:38:39,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132654326] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:39,215 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:39,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 22:38:39,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224192477] [2022-02-10 22:38:39,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:39,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 22:38:39,216 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:39,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 22:38:39,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:38:39,216 INFO L87 Difference]: Start difference. First operand 10163 states and 28223 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:39,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:39,325 INFO L93 Difference]: Finished difference Result 10930 states and 30249 transitions. [2022-02-10 22:38:39,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 22:38:39,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-02-10 22:38:39,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:39,342 INFO L225 Difference]: With dead ends: 10930 [2022-02-10 22:38:39,342 INFO L226 Difference]: Without dead ends: 10873 [2022-02-10 22:38:39,343 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-10 22:38:39,343 INFO L934 BasicCegarLoop]: 275 mSDtfsCounter, 83 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:39,343 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 1298 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:38:39,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10873 states. [2022-02-10 22:38:39,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10873 to 10163. [2022-02-10 22:38:39,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10163 states, 10162 states have (on average 2.777307616610903) internal successors, (28223), 10162 states have internal predecessors, (28223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:39,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10163 states to 10163 states and 28223 transitions. [2022-02-10 22:38:39,476 INFO L78 Accepts]: Start accepts. Automaton has 10163 states and 28223 transitions. Word has length 181 [2022-02-10 22:38:39,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:39,476 INFO L470 AbstractCegarLoop]: Abstraction has 10163 states and 28223 transitions. [2022-02-10 22:38:39,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:39,476 INFO L276 IsEmpty]: Start isEmpty. Operand 10163 states and 28223 transitions. [2022-02-10 22:38:39,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-02-10 22:38:39,489 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:39,489 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:39,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2022-02-10 22:38:39,489 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:39,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:39,490 INFO L85 PathProgramCache]: Analyzing trace with hash -964256132, now seen corresponding path program 4 times [2022-02-10 22:38:39,490 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:39,490 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307486246] [2022-02-10 22:38:39,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:39,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:39,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:39,546 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:39,546 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307486246] [2022-02-10 22:38:39,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307486246] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:39,547 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:39,547 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 22:38:39,547 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204196500] [2022-02-10 22:38:39,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:39,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 22:38:39,547 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:39,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 22:38:39,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:38:39,547 INFO L87 Difference]: Start difference. First operand 10163 states and 28223 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:39,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:39,706 INFO L93 Difference]: Finished difference Result 12879 states and 35538 transitions. [2022-02-10 22:38:39,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 22:38:39,706 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-02-10 22:38:39,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:39,728 INFO L225 Difference]: With dead ends: 12879 [2022-02-10 22:38:39,728 INFO L226 Difference]: Without dead ends: 12822 [2022-02-10 22:38:39,728 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-02-10 22:38:39,728 INFO L934 BasicCegarLoop]: 323 mSDtfsCounter, 214 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:39,728 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 1992 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:38:39,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12822 states. [2022-02-10 22:38:39,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12822 to 11513. [2022-02-10 22:38:39,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11513 states, 11512 states have (on average 2.774930507296734) internal successors, (31945), 11512 states have internal predecessors, (31945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:39,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11513 states to 11513 states and 31945 transitions. [2022-02-10 22:38:39,898 INFO L78 Accepts]: Start accepts. Automaton has 11513 states and 31945 transitions. Word has length 181 [2022-02-10 22:38:39,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:39,898 INFO L470 AbstractCegarLoop]: Abstraction has 11513 states and 31945 transitions. [2022-02-10 22:38:39,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:39,898 INFO L276 IsEmpty]: Start isEmpty. Operand 11513 states and 31945 transitions. [2022-02-10 22:38:39,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-02-10 22:38:39,913 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:39,913 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:39,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2022-02-10 22:38:39,913 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:39,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:39,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1597101116, now seen corresponding path program 5 times [2022-02-10 22:38:39,914 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:39,914 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20716753] [2022-02-10 22:38:39,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:39,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:39,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:39,988 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:39,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20716753] [2022-02-10 22:38:39,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20716753] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:39,990 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:39,991 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 22:38:39,992 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009280752] [2022-02-10 22:38:39,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:39,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 22:38:39,997 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:39,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 22:38:39,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:38:39,997 INFO L87 Difference]: Start difference. First operand 11513 states and 31945 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:40,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:40,155 INFO L93 Difference]: Finished difference Result 12412 states and 34343 transitions. [2022-02-10 22:38:40,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 22:38:40,156 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-02-10 22:38:40,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:40,175 INFO L225 Difference]: With dead ends: 12412 [2022-02-10 22:38:40,176 INFO L226 Difference]: Without dead ends: 12355 [2022-02-10 22:38:40,176 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-02-10 22:38:40,177 INFO L934 BasicCegarLoop]: 285 mSDtfsCounter, 104 mSDsluCounter, 1543 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1795 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:40,177 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 1795 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:38:40,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12355 states. [2022-02-10 22:38:40,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12355 to 11517. [2022-02-10 22:38:40,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11517 states, 11516 states have (on average 2.7749218478638418) internal successors, (31956), 11516 states have internal predecessors, (31956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:40,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11517 states to 11517 states and 31956 transitions. [2022-02-10 22:38:40,334 INFO L78 Accepts]: Start accepts. Automaton has 11517 states and 31956 transitions. Word has length 181 [2022-02-10 22:38:40,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:40,334 INFO L470 AbstractCegarLoop]: Abstraction has 11517 states and 31956 transitions. [2022-02-10 22:38:40,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:40,334 INFO L276 IsEmpty]: Start isEmpty. Operand 11517 states and 31956 transitions. [2022-02-10 22:38:40,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-02-10 22:38:40,349 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:40,349 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:40,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2022-02-10 22:38:40,349 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:40,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:40,350 INFO L85 PathProgramCache]: Analyzing trace with hash 348534712, now seen corresponding path program 6 times [2022-02-10 22:38:40,350 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:40,350 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384751239] [2022-02-10 22:38:40,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:40,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:40,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:40,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:40,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384751239] [2022-02-10 22:38:40,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384751239] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:40,414 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:40,414 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 22:38:40,414 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924058282] [2022-02-10 22:38:40,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:40,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 22:38:40,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:40,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 22:38:40,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:38:40,414 INFO L87 Difference]: Start difference. First operand 11517 states and 31956 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:40,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:40,520 INFO L93 Difference]: Finished difference Result 12352 states and 34187 transitions. [2022-02-10 22:38:40,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 22:38:40,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-02-10 22:38:40,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:40,540 INFO L225 Difference]: With dead ends: 12352 [2022-02-10 22:38:40,540 INFO L226 Difference]: Without dead ends: 12295 [2022-02-10 22:38:40,540 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-02-10 22:38:40,541 INFO L934 BasicCegarLoop]: 283 mSDtfsCounter, 86 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:40,541 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 1110 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:38:40,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12295 states. [2022-02-10 22:38:40,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12295 to 11513. [2022-02-10 22:38:40,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11513 states, 11512 states have (on average 2.774930507296734) internal successors, (31945), 11512 states have internal predecessors, (31945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:40,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11513 states to 11513 states and 31945 transitions. [2022-02-10 22:38:40,702 INFO L78 Accepts]: Start accepts. Automaton has 11513 states and 31945 transitions. Word has length 181 [2022-02-10 22:38:40,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:40,702 INFO L470 AbstractCegarLoop]: Abstraction has 11513 states and 31945 transitions. [2022-02-10 22:38:40,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:40,702 INFO L276 IsEmpty]: Start isEmpty. Operand 11513 states and 31945 transitions. [2022-02-10 22:38:40,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-02-10 22:38:40,717 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:40,717 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:40,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2022-02-10 22:38:40,718 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:40,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:40,718 INFO L85 PathProgramCache]: Analyzing trace with hash -550249376, now seen corresponding path program 1 times [2022-02-10 22:38:40,718 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:40,718 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021235617] [2022-02-10 22:38:40,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:40,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:40,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:40,780 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:40,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021235617] [2022-02-10 22:38:40,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021235617] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:38:40,780 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:38:40,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 22:38:40,781 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586834455] [2022-02-10 22:38:40,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:40,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 22:38:40,781 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:40,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 22:38:40,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:38:40,781 INFO L87 Difference]: Start difference. First operand 11513 states and 31945 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:40,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:38:40,939 INFO L93 Difference]: Finished difference Result 12631 states and 34880 transitions. [2022-02-10 22:38:40,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 22:38:40,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-02-10 22:38:40,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:38:40,963 INFO L225 Difference]: With dead ends: 12631 [2022-02-10 22:38:40,963 INFO L226 Difference]: Without dead ends: 12580 [2022-02-10 22:38:40,964 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-02-10 22:38:40,964 INFO L934 BasicCegarLoop]: 301 mSDtfsCounter, 209 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:40,964 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 1421 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:38:40,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12580 states. [2022-02-10 22:38:41,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12580 to 11549. [2022-02-10 22:38:41,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11549 states, 11548 states have (on average 2.774852788361621) internal successors, (32044), 11548 states have internal predecessors, (32044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:41,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11549 states to 11549 states and 32044 transitions. [2022-02-10 22:38:41,129 INFO L78 Accepts]: Start accepts. Automaton has 11549 states and 32044 transitions. Word has length 181 [2022-02-10 22:38:41,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:38:41,129 INFO L470 AbstractCegarLoop]: Abstraction has 11549 states and 32044 transitions. [2022-02-10 22:38:41,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:38:41,129 INFO L276 IsEmpty]: Start isEmpty. Operand 11549 states and 32044 transitions. [2022-02-10 22:38:41,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-02-10 22:38:41,143 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:38:41,143 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:41,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2022-02-10 22:38:41,143 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:38:41,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:38:41,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1708434304, now seen corresponding path program 1 times [2022-02-10 22:38:41,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:38:41,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424649425] [2022-02-10 22:38:41,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:41,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:38:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:41,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:38:41,728 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:38:41,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424649425] [2022-02-10 22:38:41,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424649425] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:38:41,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118964942] [2022-02-10 22:38:41,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:38:41,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:38:41,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:38:41,729 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:38:41,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-10 22:38:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:38:41,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 22:38:41,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:38:42,089 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:38:42,188 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-10 22:38:42,400 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 22:38:42,400 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 22:38:42,493 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:38:42,659 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:38:42,754 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:38:43,359 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-02-10 22:38:43,359 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-02-10 22:38:43,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:38:43,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:38:44,151 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4950 (Array Int Int)) (~get2~0.base Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_4950))) (let ((.cse5 (* c_thread1Thread1of1ForFork0_~i~0 4)) (.cse6 (select .cse7 c_~get1~0.base)) (.cse4 (select .cse7 ~get2~0.base))) (let ((.cse1 (select .cse4 c_~get2~0.offset)) (.cse0 (select .cse6 c_~get1~0.offset)) (.cse2 (select .cse6 (+ c_~get1~0.offset .cse5))) (.cse3 (select .cse4 (+ c_~get2~0.offset .cse5)))) (or (= .cse0 .cse1) (= .cse2 .cse3) (< .cse1 .cse0) (<= (+ .cse2 1) .cse3)))))) is different from false [2022-02-10 22:38:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:38:44,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118964942] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 22:38:44,278 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 22:38:44,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [28, 30] total 67 [2022-02-10 22:38:44,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343067615] [2022-02-10 22:38:44,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:38:44,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 22:38:44,278 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:38:44,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 22:38:44,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=3976, Unknown=1, NotChecked=128, Total=4422 [2022-02-10 22:38:44,279 INFO L87 Difference]: Start difference. First operand 11549 states and 32044 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-02-10 22:38:49,089 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 22:38:49,105 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 22:38:49,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 22:38:49,287 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 322 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1213 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=349, Invalid=4210, Unknown=1, NotChecked=132, Total=4692 [2022-02-10 22:38:49,287 INFO L934 BasicCegarLoop]: 154 mSDtfsCounter, 15 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:38:49,287 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1586 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 196 Invalid, 0 Unknown, 127 Unchecked, 0.1s Time] [2022-02-10 22:38:49,288 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-10 22:38:49,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-02-10 22:38:49,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:38:49,492 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (11549states) and FLOYD_HOARE automaton (currently 9 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (400 states constructed, input type IntersectNwa). [2022-02-10 22:38:49,493 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-10 22:38:49,493 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-10 22:38:49,495 INFO L733 BasicCegarLoop]: Path program histogram: [64, 63, 53, 37, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:38:49,496 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-10 22:38:49,496 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 22:38:49,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 10:38:49 BasicIcfg [2022-02-10 22:38:49,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 22:38:49,498 INFO L158 Benchmark]: Toolchain (without parser) took 742095.24ms. Allocated memory was 181.4MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 130.3MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2022-02-10 22:38:49,498 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 181.4MB. Free memory is still 147.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 22:38:49,498 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.81ms. Allocated memory was 181.4MB in the beginning and 228.6MB in the end (delta: 47.2MB). Free memory was 130.1MB in the beginning and 204.2MB in the end (delta: -74.2MB). Peak memory consumption was 4.3MB. Max. memory is 8.0GB. [2022-02-10 22:38:49,498 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.07ms. Allocated memory is still 228.6MB. Free memory was 204.2MB in the beginning and 202.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-10 22:38:49,498 INFO L158 Benchmark]: Boogie Preprocessor took 23.05ms. Allocated memory is still 228.6MB. Free memory was 202.2MB in the beginning and 200.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-10 22:38:49,498 INFO L158 Benchmark]: RCFGBuilder took 369.56ms. Allocated memory is still 228.6MB. Free memory was 200.7MB in the beginning and 182.9MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-02-10 22:38:49,498 INFO L158 Benchmark]: TraceAbstraction took 741454.92ms. Allocated memory was 228.6MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 182.6MB in the beginning and 1.7GB in the end (delta: -1.5GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2022-02-10 22:38:49,498 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 181.4MB. Free memory is still 147.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 218.81ms. Allocated memory was 181.4MB in the beginning and 228.6MB in the end (delta: 47.2MB). Free memory was 130.1MB in the beginning and 204.2MB in the end (delta: -74.2MB). Peak memory consumption was 4.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.07ms. Allocated memory is still 228.6MB. Free memory was 204.2MB in the beginning and 202.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.05ms. Allocated memory is still 228.6MB. Free memory was 202.2MB in the beginning and 200.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 369.56ms. Allocated memory is still 228.6MB. Free memory was 200.7MB in the beginning and 182.9MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 741454.92ms. Allocated memory was 228.6MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 182.6MB in the beginning and 1.7GB in the end (delta: -1.5GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (11549states) and FLOYD_HOARE automaton (currently 9 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (400 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (11549states) and FLOYD_HOARE automaton (currently 9 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (400 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (11549states) and FLOYD_HOARE automaton (currently 9 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (400 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 292 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 741.3s, OverallIterations: 259, TraceHistogramMax: 2, PathProgramHistogramMax: 64, EmptinessCheckTime: 5.8s, AutomataDifference: 328.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 327377 SdHoareTripleChecker+Valid, 102.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 327377 mSDsluCounter, 997070 SdHoareTripleChecker+Invalid, 85.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 26467 IncrementalHoareTripleChecker+Unchecked, 924204 mSDsCounter, 5365 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 276659 IncrementalHoareTripleChecker+Invalid, 308491 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5365 mSolverCounterUnsat, 94856 mSDtfsCounter, 276659 mSolverCounterSat, 1.7s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27024 GetRequests, 15465 SyntacticMatches, 199 SemanticMatches, 11360 ConstructedPredicates, 12 IntricatePredicates, 21 DeprecatedPredicates, 144827 ImplicationChecksByTransitivity, 246.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19863occurred in iteration=105, InterpolantAutomatonStates: 6853, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 80.4s AutomataMinimizationTime, 258 MinimizatonAttempts, 2705410 StatesRemovedByMinimization, 254 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 305.0s InterpolantComputationTime, 52882 NumberOfCodeBlocks, 52733 NumberOfCodeBlocksAsserted, 330 NumberOfCheckSat, 60052 ConstructedInterpolants, 714 QuantifiedInterpolants, 342974 SizeOfPredicates, 1123 NumberOfNonLiveVariables, 16318 ConjunctsInSsa, 2213 ConjunctsInUnsatCore, 348 InterpolantComputations, 221 PerfectInterpolantSequences, 762/958 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown