/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/popl20-figure1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 17:20:36,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 17:20:36,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 17:20:36,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-03 17:20:36,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-03 17:20:36,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-03 17:20:36,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-03 17:20:36,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-03 17:20:36,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-03 17:20:36,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-03 17:20:36,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-03 17:20:36,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-03 17:20:36,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-03 17:20:36,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-03 17:20:36,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-03 17:20:36,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-03 17:20:36,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-03 17:20:36,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-03 17:20:36,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-03 17:20:36,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-03 17:20:36,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-03 17:20:36,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-03 17:20:36,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-03 17:20:36,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-03 17:20:36,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-03 17:20:36,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-03 17:20:36,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-03 17:20:36,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-03 17:20:36,246 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 [2022-03-03 17:20:36,277 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 17:20:36,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 17:20:36,278 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 17:20:36,278 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 17:20:36,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 17:20:36,279 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 17:20:36,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 17:20:36,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 17:20:36,279 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 17:20:36,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 17:20:36,280 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 17:20:36,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 17:20:36,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 17:20:36,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 17:20:36,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 17:20:36,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 17:20:36,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 17:20:36,281 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 17:20:36,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 17:20:36,281 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 17:20:36,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 17:20:36,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 17:20:36,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 17:20:36,281 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 17:20:36,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 17:20:36,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:20:36,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 17:20:36,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 17:20:36,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 17:20:36,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 17:20:36,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 17:20:36,282 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 17:20:36,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 17:20:36,282 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 17:20:36,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 17:20:36,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 17:20:36,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 17:20:36,498 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-03 17:20:36,498 INFO L275 PluginConnector]: CDTParser initialized [2022-03-03 17:20:36,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure1.wvr.c [2022-03-03 17:20:36,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/696c608db/dad07d9a7ec74df4bf4629d9c793728b/FLAG034aff636 [2022-03-03 17:20:36,867 INFO L306 CDTParser]: Found 1 translation units. [2022-03-03 17:20:36,867 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1.wvr.c [2022-03-03 17:20:36,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/696c608db/dad07d9a7ec74df4bf4629d9c793728b/FLAG034aff636 [2022-03-03 17:20:37,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/696c608db/dad07d9a7ec74df4bf4629d9c793728b [2022-03-03 17:20:37,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 17:20:37,311 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-03 17:20:37,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-03 17:20:37,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-03 17:20:37,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-03 17:20:37,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:20:37" (1/1) ... [2022-03-03 17:20:37,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f4588a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:20:37, skipping insertion in model container [2022-03-03 17:20:37,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:20:37" (1/1) ... [2022-03-03 17:20:37,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-03 17:20:37,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-03 17:20:37,463 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/popl20-figure1.wvr.c[1991,2004] [2022-03-03 17:20:37,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:20:37,469 INFO L203 MainTranslator]: Completed pre-run [2022-03-03 17:20:37,480 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/popl20-figure1.wvr.c[1991,2004] [2022-03-03 17:20:37,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:20:37,489 INFO L208 MainTranslator]: Completed translation [2022-03-03 17:20:37,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:20:37 WrapperNode [2022-03-03 17:20:37,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-03 17:20:37,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 17:20:37,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 17:20:37,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 17:20:37,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:20:37" (1/1) ... [2022-03-03 17:20:37,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:20:37" (1/1) ... [2022-03-03 17:20:37,517 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2022-03-03 17:20:37,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 17:20:37,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 17:20:37,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 17:20:37,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 17:20:37,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:20:37" (1/1) ... [2022-03-03 17:20:37,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:20:37" (1/1) ... [2022-03-03 17:20:37,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:20:37" (1/1) ... [2022-03-03 17:20:37,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:20:37" (1/1) ... [2022-03-03 17:20:37,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:20:37" (1/1) ... [2022-03-03 17:20:37,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:20:37" (1/1) ... [2022-03-03 17:20:37,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:20:37" (1/1) ... [2022-03-03 17:20:37,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 17:20:37,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 17:20:37,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 17:20:37,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 17:20:37,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:20:37" (1/1) ... [2022-03-03 17:20:37,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:20:37,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:37,570 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) [2022-03-03 17:20:37,578 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 [2022-03-03 17:20:37,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-03 17:20:37,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 17:20:37,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 17:20:37,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 17:20:37,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 17:20:37,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-03 17:20:37,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-03 17:20:37,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-03 17:20:37,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-03 17:20:37,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-03 17:20:37,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 17:20:37,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 17:20:37,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-03 17:20:37,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-03 17:20:37,597 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 17:20:37,657 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 17:20:37,658 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 17:20:37,773 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 17:20:37,797 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 17:20:37,798 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-03 17:20:37,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:20:37 BoogieIcfgContainer [2022-03-03 17:20:37,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 17:20:37,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 17:20:37,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 17:20:37,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 17:20:37,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 05:20:37" (1/3) ... [2022-03-03 17:20:37,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24db3992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:20:37, skipping insertion in model container [2022-03-03 17:20:37,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:20:37" (2/3) ... [2022-03-03 17:20:37,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24db3992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:20:37, skipping insertion in model container [2022-03-03 17:20:37,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:20:37" (3/3) ... [2022-03-03 17:20:37,805 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2022-03-03 17:20:37,808 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 17:20:37,808 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 17:20:37,808 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 17:20:37,808 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 17:20:37,834 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,834 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,835 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,835 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,835 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,835 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,836 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,847 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,847 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,848 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,849 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,849 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,849 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,850 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,852 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,852 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,852 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,852 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,852 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,852 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,860 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,860 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,860 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,861 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,861 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:20:37,864 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-03 17:20:37,891 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 17:20:37,895 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, mLazyFiniteAutomaton=false, 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-03 17:20:37,896 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-03 17:20:37,903 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 79 places, 77 transitions, 170 flow [2022-03-03 17:20:37,946 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 438 states, 437 states have (on average 2.6727688787185353) internal successors, (1168), 437 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:37,949 INFO L276 IsEmpty]: Start isEmpty. Operand has 438 states, 437 states have (on average 2.6727688787185353) internal successors, (1168), 437 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:37,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-03 17:20:37,962 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:37,963 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:20:37,963 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:37,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:37,967 INFO L85 PathProgramCache]: Analyzing trace with hash 366020055, now seen corresponding path program 1 times [2022-03-03 17:20:37,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:37,973 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338938949] [2022-03-03 17:20:37,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:37,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:38,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:38,144 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:38,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338938949] [2022-03-03 17:20:38,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338938949] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:20:38,145 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:20:38,145 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-03 17:20:38,146 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834025617] [2022-03-03 17:20:38,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:20:38,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-03 17:20:38,151 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:38,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-03 17:20:38,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:20:38,187 INFO L87 Difference]: Start difference. First operand has 438 states, 437 states have (on average 2.6727688787185353) internal successors, (1168), 437 states have internal predecessors, (1168), 0 states have call successors, (0), 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 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:38,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:38,241 INFO L93 Difference]: Finished difference Result 438 states and 1086 transitions. [2022-03-03 17:20:38,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-03 17:20:38,243 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-03-03 17:20:38,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:38,264 INFO L225 Difference]: With dead ends: 438 [2022-03-03 17:20:38,264 INFO L226 Difference]: Without dead ends: 437 [2022-03-03 17:20:38,266 INFO L932 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 [2022-03-03 17:20:38,268 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:38,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:20:38,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-03-03 17:20:38,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2022-03-03 17:20:38,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 2.488532110091743) internal successors, (1085), 436 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:38,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 1085 transitions. [2022-03-03 17:20:38,345 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 1085 transitions. Word has length 52 [2022-03-03 17:20:38,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:38,345 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 1085 transitions. [2022-03-03 17:20:38,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:38,345 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 1085 transitions. [2022-03-03 17:20:38,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-03 17:20:38,356 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:38,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:20:38,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 17:20:38,358 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:38,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:38,362 INFO L85 PathProgramCache]: Analyzing trace with hash 613712183, now seen corresponding path program 1 times [2022-03-03 17:20:38,362 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:38,362 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912494023] [2022-03-03 17:20:38,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:38,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:38,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:38,543 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:38,543 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912494023] [2022-03-03 17:20:38,543 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912494023] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:20:38,543 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:20:38,543 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:20:38,543 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298140153] [2022-03-03 17:20:38,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:20:38,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:20:38,544 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:38,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:20:38,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:20:38,545 INFO L87 Difference]: Start difference. First operand 437 states and 1085 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:38,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:38,585 INFO L93 Difference]: Finished difference Result 599 states and 1457 transitions. [2022-03-03 17:20:38,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 17:20:38,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-03-03 17:20:38,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:38,588 INFO L225 Difference]: With dead ends: 599 [2022-03-03 17:20:38,588 INFO L226 Difference]: Without dead ends: 485 [2022-03-03 17:20:38,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:20:38,589 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 6 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:38,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 201 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:20:38,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-03-03 17:20:38,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 473. [2022-03-03 17:20:38,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 2.472457627118644) internal successors, (1167), 472 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:38,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1167 transitions. [2022-03-03 17:20:38,601 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 1167 transitions. Word has length 52 [2022-03-03 17:20:38,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:38,601 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 1167 transitions. [2022-03-03 17:20:38,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:38,602 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 1167 transitions. [2022-03-03 17:20:38,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-03 17:20:38,605 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:38,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:20:38,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 17:20:38,605 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:38,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:38,606 INFO L85 PathProgramCache]: Analyzing trace with hash -60987315, now seen corresponding path program 1 times [2022-03-03 17:20:38,606 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:38,606 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179776773] [2022-03-03 17:20:38,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:38,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:38,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:38,702 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:38,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179776773] [2022-03-03 17:20:38,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179776773] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:20:38,703 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:20:38,703 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:20:38,703 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753987979] [2022-03-03 17:20:38,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:20:38,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:20:38,703 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:38,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:20:38,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:20:38,704 INFO L87 Difference]: Start difference. First operand 473 states and 1167 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:38,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:38,759 INFO L93 Difference]: Finished difference Result 609 states and 1524 transitions. [2022-03-03 17:20:38,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 17:20:38,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-03-03 17:20:38,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:38,762 INFO L225 Difference]: With dead ends: 609 [2022-03-03 17:20:38,762 INFO L226 Difference]: Without dead ends: 609 [2022-03-03 17:20:38,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:20:38,763 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 49 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:38,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 207 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:20:38,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-03-03 17:20:38,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 505. [2022-03-03 17:20:38,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 2.4722222222222223) internal successors, (1246), 504 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:38,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 1246 transitions. [2022-03-03 17:20:38,774 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 1246 transitions. Word has length 57 [2022-03-03 17:20:38,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:38,774 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 1246 transitions. [2022-03-03 17:20:38,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:38,774 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 1246 transitions. [2022-03-03 17:20:38,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-03 17:20:38,775 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:38,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:20:38,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-03 17:20:38,776 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:38,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:38,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1396697041, now seen corresponding path program 2 times [2022-03-03 17:20:38,776 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:38,777 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412359531] [2022-03-03 17:20:38,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:38,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:38,896 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:38,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412359531] [2022-03-03 17:20:38,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412359531] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:20:38,896 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:20:38,896 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 17:20:38,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627547350] [2022-03-03 17:20:38,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:20:38,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:20:38,897 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:38,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:20:38,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:20:38,898 INFO L87 Difference]: Start difference. First operand 505 states and 1246 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:38,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:38,974 INFO L93 Difference]: Finished difference Result 749 states and 1900 transitions. [2022-03-03 17:20:38,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 17:20:38,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-03-03 17:20:38,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:39,003 INFO L225 Difference]: With dead ends: 749 [2022-03-03 17:20:39,003 INFO L226 Difference]: Without dead ends: 749 [2022-03-03 17:20:39,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:20:39,004 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 64 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:39,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 293 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:20:39,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-03-03 17:20:39,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 532. [2022-03-03 17:20:39,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 531 states have (on average 2.48210922787194) internal successors, (1318), 531 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:39,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 1318 transitions. [2022-03-03 17:20:39,022 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 1318 transitions. Word has length 57 [2022-03-03 17:20:39,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:39,023 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 1318 transitions. [2022-03-03 17:20:39,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:39,024 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 1318 transitions. [2022-03-03 17:20:39,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-03 17:20:39,026 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:39,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:20:39,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-03 17:20:39,027 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:39,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:39,027 INFO L85 PathProgramCache]: Analyzing trace with hash 467447237, now seen corresponding path program 3 times [2022-03-03 17:20:39,027 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:39,027 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293345431] [2022-03-03 17:20:39,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:39,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:39,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:39,123 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:39,124 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293345431] [2022-03-03 17:20:39,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293345431] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:20:39,125 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:20:39,125 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 17:20:39,125 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796698234] [2022-03-03 17:20:39,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:20:39,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:20:39,126 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:39,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:20:39,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:20:39,126 INFO L87 Difference]: Start difference. First operand 532 states and 1318 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:39,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:39,201 INFO L93 Difference]: Finished difference Result 784 states and 1994 transitions. [2022-03-03 17:20:39,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 17:20:39,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-03-03 17:20:39,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:39,207 INFO L225 Difference]: With dead ends: 784 [2022-03-03 17:20:39,207 INFO L226 Difference]: Without dead ends: 784 [2022-03-03 17:20:39,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:20:39,217 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 113 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:39,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 233 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:20:39,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-03-03 17:20:39,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 512. [2022-03-03 17:20:39,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 2.4892367906066535) internal successors, (1272), 511 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:39,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 1272 transitions. [2022-03-03 17:20:39,235 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 1272 transitions. Word has length 57 [2022-03-03 17:20:39,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:39,235 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 1272 transitions. [2022-03-03 17:20:39,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:39,235 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 1272 transitions. [2022-03-03 17:20:39,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-03 17:20:39,237 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:39,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:20:39,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-03 17:20:39,237 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:39,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:39,238 INFO L85 PathProgramCache]: Analyzing trace with hash 698420085, now seen corresponding path program 4 times [2022-03-03 17:20:39,238 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:39,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234056444] [2022-03-03 17:20:39,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:39,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:39,285 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:39,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234056444] [2022-03-03 17:20:39,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234056444] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:20:39,286 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:20:39,286 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:20:39,286 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958865953] [2022-03-03 17:20:39,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:20:39,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:20:39,286 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:39,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:20:39,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:20:39,287 INFO L87 Difference]: Start difference. First operand 512 states and 1272 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:39,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:39,325 INFO L93 Difference]: Finished difference Result 712 states and 1789 transitions. [2022-03-03 17:20:39,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 17:20:39,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-03-03 17:20:39,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:39,328 INFO L225 Difference]: With dead ends: 712 [2022-03-03 17:20:39,328 INFO L226 Difference]: Without dead ends: 700 [2022-03-03 17:20:39,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:20:39,329 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 40 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:39,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 150 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:20:39,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-03-03 17:20:39,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 516. [2022-03-03 17:20:39,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 2.49126213592233) internal successors, (1283), 515 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:39,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1283 transitions. [2022-03-03 17:20:39,340 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1283 transitions. Word has length 57 [2022-03-03 17:20:39,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:39,341 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 1283 transitions. [2022-03-03 17:20:39,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:39,341 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1283 transitions. [2022-03-03 17:20:39,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-03 17:20:39,342 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:39,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:20:39,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-03 17:20:39,342 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:39,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:39,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1462366689, now seen corresponding path program 5 times [2022-03-03 17:20:39,343 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:39,343 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202004818] [2022-03-03 17:20:39,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:39,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:39,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:39,384 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:39,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202004818] [2022-03-03 17:20:39,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202004818] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:20:39,385 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:20:39,385 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:20:39,385 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62464417] [2022-03-03 17:20:39,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:20:39,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:20:39,386 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:39,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:20:39,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:20:39,386 INFO L87 Difference]: Start difference. First operand 516 states and 1283 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:39,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:39,434 INFO L93 Difference]: Finished difference Result 664 states and 1669 transitions. [2022-03-03 17:20:39,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 17:20:39,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-03-03 17:20:39,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:39,437 INFO L225 Difference]: With dead ends: 664 [2022-03-03 17:20:39,437 INFO L226 Difference]: Without dead ends: 664 [2022-03-03 17:20:39,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:20:39,438 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 30 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:39,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 192 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:20:39,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-03-03 17:20:39,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 528. [2022-03-03 17:20:39,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 2.4971537001897532) internal successors, (1316), 527 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:39,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1316 transitions. [2022-03-03 17:20:39,449 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1316 transitions. Word has length 57 [2022-03-03 17:20:39,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:39,449 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 1316 transitions. [2022-03-03 17:20:39,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:39,449 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1316 transitions. [2022-03-03 17:20:39,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-03 17:20:39,450 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:39,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:20:39,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-03 17:20:39,451 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:39,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:39,451 INFO L85 PathProgramCache]: Analyzing trace with hash 817865927, now seen corresponding path program 6 times [2022-03-03 17:20:39,451 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:39,451 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701956156] [2022-03-03 17:20:39,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:39,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:39,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:39,499 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:39,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701956156] [2022-03-03 17:20:39,499 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701956156] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:20:39,499 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:20:39,499 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 17:20:39,499 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190640948] [2022-03-03 17:20:39,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:20:39,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:20:39,500 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:39,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:20:39,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:20:39,500 INFO L87 Difference]: Start difference. First operand 528 states and 1316 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:39,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:39,548 INFO L93 Difference]: Finished difference Result 804 states and 2045 transitions. [2022-03-03 17:20:39,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 17:20:39,548 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-03-03 17:20:39,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:39,551 INFO L225 Difference]: With dead ends: 804 [2022-03-03 17:20:39,551 INFO L226 Difference]: Without dead ends: 804 [2022-03-03 17:20:39,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:20:39,552 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 56 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:39,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 207 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:20:39,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-03-03 17:20:39,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 516. [2022-03-03 17:20:39,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 2.49126213592233) internal successors, (1283), 515 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:39,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1283 transitions. [2022-03-03 17:20:39,564 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1283 transitions. Word has length 57 [2022-03-03 17:20:39,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:39,564 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 1283 transitions. [2022-03-03 17:20:39,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:39,564 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1283 transitions. [2022-03-03 17:20:39,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-03 17:20:39,566 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:39,566 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:20:39,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-03 17:20:39,566 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:39,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:39,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1733147865, now seen corresponding path program 7 times [2022-03-03 17:20:39,567 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:39,567 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412111135] [2022-03-03 17:20:39,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:39,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:39,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:39,643 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:39,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412111135] [2022-03-03 17:20:39,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412111135] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:20:39,643 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:20:39,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:20:39,643 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783055110] [2022-03-03 17:20:39,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:20:39,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:20:39,643 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:39,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:20:39,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:20:39,644 INFO L87 Difference]: Start difference. First operand 516 states and 1283 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:39,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:39,685 INFO L93 Difference]: Finished difference Result 782 states and 1967 transitions. [2022-03-03 17:20:39,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 17:20:39,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-03-03 17:20:39,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:39,689 INFO L225 Difference]: With dead ends: 782 [2022-03-03 17:20:39,689 INFO L226 Difference]: Without dead ends: 758 [2022-03-03 17:20:39,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:20:39,691 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 64 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:39,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 211 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:20:39,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-03-03 17:20:39,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 504. [2022-03-03 17:20:39,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 2.485089463220676) internal successors, (1250), 503 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:39,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1250 transitions. [2022-03-03 17:20:39,702 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1250 transitions. Word has length 57 [2022-03-03 17:20:39,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:39,702 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 1250 transitions. [2022-03-03 17:20:39,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:39,703 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1250 transitions. [2022-03-03 17:20:39,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-03 17:20:39,704 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:39,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:20:39,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-03 17:20:39,704 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:39,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:39,705 INFO L85 PathProgramCache]: Analyzing trace with hash 534186475, now seen corresponding path program 8 times [2022-03-03 17:20:39,705 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:39,705 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595401010] [2022-03-03 17:20:39,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:39,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:39,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:39,758 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:39,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595401010] [2022-03-03 17:20:39,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595401010] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:20:39,758 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:20:39,758 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:20:39,758 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262160651] [2022-03-03 17:20:39,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:20:39,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:20:39,758 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:39,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:20:39,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:20:39,759 INFO L87 Difference]: Start difference. First operand 504 states and 1250 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:39,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:39,820 INFO L93 Difference]: Finished difference Result 834 states and 2102 transitions. [2022-03-03 17:20:39,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 17:20:39,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-03-03 17:20:39,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:39,824 INFO L225 Difference]: With dead ends: 834 [2022-03-03 17:20:39,824 INFO L226 Difference]: Without dead ends: 822 [2022-03-03 17:20:39,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:20:39,824 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 44 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 238 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 [2022-03-03 17:20:39,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 238 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:20:39,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-03-03 17:20:39,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 492. [2022-03-03 17:20:39,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 2.478615071283096) internal successors, (1217), 491 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:39,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1217 transitions. [2022-03-03 17:20:39,881 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1217 transitions. Word has length 57 [2022-03-03 17:20:39,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:39,881 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 1217 transitions. [2022-03-03 17:20:39,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:39,881 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1217 transitions. [2022-03-03 17:20:39,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-03 17:20:39,884 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:39,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:20:39,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-03 17:20:39,884 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:39,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:39,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1298133079, now seen corresponding path program 9 times [2022-03-03 17:20:39,885 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:39,885 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153597350] [2022-03-03 17:20:39,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:39,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:39,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:39,938 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:39,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153597350] [2022-03-03 17:20:39,938 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153597350] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:20:39,938 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:20:39,939 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:20:39,939 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622724066] [2022-03-03 17:20:39,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:20:39,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:20:39,939 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:39,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:20:39,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:20:39,939 INFO L87 Difference]: Start difference. First operand 492 states and 1217 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:39,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:39,993 INFO L93 Difference]: Finished difference Result 790 states and 1989 transitions. [2022-03-03 17:20:39,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 17:20:39,993 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-03-03 17:20:39,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:39,996 INFO L225 Difference]: With dead ends: 790 [2022-03-03 17:20:39,996 INFO L226 Difference]: Without dead ends: 790 [2022-03-03 17:20:39,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:20:39,996 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 38 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:39,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 198 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:20:39,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2022-03-03 17:20:40,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 500. [2022-03-03 17:20:40,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 2.4749498997995993) internal successors, (1235), 499 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:40,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 1235 transitions. [2022-03-03 17:20:40,006 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 1235 transitions. Word has length 57 [2022-03-03 17:20:40,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:40,006 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 1235 transitions. [2022-03-03 17:20:40,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:40,006 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1235 transitions. [2022-03-03 17:20:40,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-03 17:20:40,007 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:40,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:20:40,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-03 17:20:40,007 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:40,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:40,008 INFO L85 PathProgramCache]: Analyzing trace with hash 653632317, now seen corresponding path program 10 times [2022-03-03 17:20:40,008 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:40,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513306548] [2022-03-03 17:20:40,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:40,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:40,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:40,071 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:40,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513306548] [2022-03-03 17:20:40,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513306548] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:20:40,071 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:20:40,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 17:20:40,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049261958] [2022-03-03 17:20:40,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:20:40,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:20:40,072 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:40,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:20:40,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:20:40,072 INFO L87 Difference]: Start difference. First operand 500 states and 1235 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:40,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:40,124 INFO L93 Difference]: Finished difference Result 672 states and 1691 transitions. [2022-03-03 17:20:40,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 17:20:40,124 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-03-03 17:20:40,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:40,127 INFO L225 Difference]: With dead ends: 672 [2022-03-03 17:20:40,127 INFO L226 Difference]: Without dead ends: 672 [2022-03-03 17:20:40,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:20:40,127 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 41 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:40,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 228 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:20:40,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-03-03 17:20:40,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 484. [2022-03-03 17:20:40,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 2.4658385093167703) internal successors, (1191), 483 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:40,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1191 transitions. [2022-03-03 17:20:40,138 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1191 transitions. Word has length 57 [2022-03-03 17:20:40,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:40,139 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 1191 transitions. [2022-03-03 17:20:40,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:40,139 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1191 transitions. [2022-03-03 17:20:40,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:20:40,140 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:40,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:20:40,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-03 17:20:40,140 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:40,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:40,140 INFO L85 PathProgramCache]: Analyzing trace with hash -786123991, now seen corresponding path program 1 times [2022-03-03 17:20:40,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:40,141 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498796779] [2022-03-03 17:20:40,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:40,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:40,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:20:40,213 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:40,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498796779] [2022-03-03 17:20:40,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498796779] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:20:40,213 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:20:40,213 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 17:20:40,213 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22331953] [2022-03-03 17:20:40,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:20:40,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:20:40,214 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:40,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:20:40,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:20:40,214 INFO L87 Difference]: Start difference. First operand 484 states and 1191 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:40,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:40,251 INFO L93 Difference]: Finished difference Result 1177 states and 2959 transitions. [2022-03-03 17:20:40,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 17:20:40,251 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:20:40,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:40,254 INFO L225 Difference]: With dead ends: 1177 [2022-03-03 17:20:40,255 INFO L226 Difference]: Without dead ends: 988 [2022-03-03 17:20:40,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:20:40,256 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 40 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:40,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 343 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:20:40,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2022-03-03 17:20:40,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 854. [2022-03-03 17:20:40,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 2.566236811254396) internal successors, (2189), 853 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:40,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 2189 transitions. [2022-03-03 17:20:40,276 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 2189 transitions. Word has length 62 [2022-03-03 17:20:40,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:40,276 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 2189 transitions. [2022-03-03 17:20:40,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:40,277 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 2189 transitions. [2022-03-03 17:20:40,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:20:40,278 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:40,278 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:40,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-03 17:20:40,278 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:40,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:40,279 INFO L85 PathProgramCache]: Analyzing trace with hash 2124186139, now seen corresponding path program 2 times [2022-03-03 17:20:40,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:40,279 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647769653] [2022-03-03 17:20:40,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:40,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:40,363 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:40,364 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:40,364 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647769653] [2022-03-03 17:20:40,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647769653] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:40,364 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748184670] [2022-03-03 17:20:40,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:20:40,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:40,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:40,366 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) [2022-03-03 17:20:40,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-03 17:20:40,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:20:40,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:40,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:40,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:40,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:40,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:40,760 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:40,760 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748184670] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:40,760 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:40,760 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:20:40,760 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150151729] [2022-03-03 17:20:40,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:40,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:20:40,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:40,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:20:40,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:20:40,761 INFO L87 Difference]: Start difference. First operand 854 states and 2189 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:41,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:41,567 INFO L93 Difference]: Finished difference Result 4648 states and 12172 transitions. [2022-03-03 17:20:41,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-03 17:20:41,568 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:20:41,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:41,584 INFO L225 Difference]: With dead ends: 4648 [2022-03-03 17:20:41,584 INFO L226 Difference]: Without dead ends: 4513 [2022-03-03 17:20:41,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=761, Invalid=3145, Unknown=0, NotChecked=0, Total=3906 [2022-03-03 17:20:41,585 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 637 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:41,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [637 Valid, 1332 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:20:41,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4513 states. [2022-03-03 17:20:41,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4513 to 1669. [2022-03-03 17:20:41,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 1668 states have (on average 2.723621103117506) internal successors, (4543), 1668 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:41,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 4543 transitions. [2022-03-03 17:20:41,638 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 4543 transitions. Word has length 67 [2022-03-03 17:20:41,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:41,639 INFO L470 AbstractCegarLoop]: Abstraction has 1669 states and 4543 transitions. [2022-03-03 17:20:41,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:41,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 4543 transitions. [2022-03-03 17:20:41,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:20:41,642 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:41,642 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:41,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:41,859 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,SelfDestructingSolverStorable13 [2022-03-03 17:20:41,859 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:41,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:41,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1705001807, now seen corresponding path program 3 times [2022-03-03 17:20:41,860 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:41,860 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523651727] [2022-03-03 17:20:41,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:41,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:41,934 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:41,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:41,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523651727] [2022-03-03 17:20:41,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523651727] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:41,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19997874] [2022-03-03 17:20:41,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:20:41,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:41,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:41,951 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) [2022-03-03 17:20:41,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-03 17:20:42,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:20:42,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:42,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:42,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:42,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:42,322 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:20:42,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19997874] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:42,322 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:42,322 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:20:42,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503890313] [2022-03-03 17:20:42,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:42,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:20:42,324 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:42,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:20:42,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:20:42,325 INFO L87 Difference]: Start difference. First operand 1669 states and 4543 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:42,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:42,906 INFO L93 Difference]: Finished difference Result 3683 states and 9665 transitions. [2022-03-03 17:20:42,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 17:20:42,906 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:20:42,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:42,930 INFO L225 Difference]: With dead ends: 3683 [2022-03-03 17:20:42,930 INFO L226 Difference]: Without dead ends: 3635 [2022-03-03 17:20:42,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=458, Invalid=2194, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 17:20:42,933 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 436 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:42,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 1556 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:20:42,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3635 states. [2022-03-03 17:20:42,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3635 to 1693. [2022-03-03 17:20:42,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1692 states have (on average 2.7145390070921986) internal successors, (4593), 1692 states have internal predecessors, (4593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:42,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 4593 transitions. [2022-03-03 17:20:42,974 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 4593 transitions. Word has length 67 [2022-03-03 17:20:42,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:42,974 INFO L470 AbstractCegarLoop]: Abstraction has 1693 states and 4593 transitions. [2022-03-03 17:20:42,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:42,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 4593 transitions. [2022-03-03 17:20:42,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:20:42,977 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:42,977 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:43,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:43,194 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,SelfDestructingSolverStorable14 [2022-03-03 17:20:43,194 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:43,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:43,195 INFO L85 PathProgramCache]: Analyzing trace with hash -2041450917, now seen corresponding path program 4 times [2022-03-03 17:20:43,195 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:43,195 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714590107] [2022-03-03 17:20:43,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:43,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:43,270 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:43,270 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:43,270 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714590107] [2022-03-03 17:20:43,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714590107] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:43,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213553229] [2022-03-03 17:20:43,271 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:20:43,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:43,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:43,288 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) [2022-03-03 17:20:43,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-03 17:20:43,337 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:20:43,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:43,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:43,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:43,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:43,663 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:43,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213553229] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:43,664 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:43,664 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:20:43,664 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525795734] [2022-03-03 17:20:43,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:43,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:20:43,664 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:43,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:20:43,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:20:43,665 INFO L87 Difference]: Start difference. First operand 1693 states and 4593 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:44,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:44,693 INFO L93 Difference]: Finished difference Result 6025 states and 16261 transitions. [2022-03-03 17:20:44,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-03 17:20:44,693 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:20:44,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:44,706 INFO L225 Difference]: With dead ends: 6025 [2022-03-03 17:20:44,706 INFO L226 Difference]: Without dead ends: 5950 [2022-03-03 17:20:44,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1805 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=994, Invalid=4408, Unknown=0, NotChecked=0, Total=5402 [2022-03-03 17:20:44,708 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 651 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:44,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 1415 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:20:44,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5950 states. [2022-03-03 17:20:44,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5950 to 2381. [2022-03-03 17:20:44,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2381 states, 2380 states have (on average 2.7668067226890756) internal successors, (6585), 2380 states have internal predecessors, (6585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:44,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 6585 transitions. [2022-03-03 17:20:44,802 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 6585 transitions. Word has length 67 [2022-03-03 17:20:44,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:44,802 INFO L470 AbstractCegarLoop]: Abstraction has 2381 states and 6585 transitions. [2022-03-03 17:20:44,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:44,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 6585 transitions. [2022-03-03 17:20:44,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:20:44,807 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:44,807 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:44,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:45,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:45,023 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:45,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:45,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1575671567, now seen corresponding path program 5 times [2022-03-03 17:20:45,024 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:45,024 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402273333] [2022-03-03 17:20:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:45,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:45,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:45,086 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:45,086 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402273333] [2022-03-03 17:20:45,087 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402273333] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:45,087 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604663713] [2022-03-03 17:20:45,087 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:20:45,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:45,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:45,102 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) [2022-03-03 17:20:45,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-03 17:20:45,152 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:20:45,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:45,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:45,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:45,322 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:45,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:20:45,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604663713] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:45,449 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:45,449 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:20:45,449 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100834471] [2022-03-03 17:20:45,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:45,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:20:45,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:45,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:20:45,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:20:45,450 INFO L87 Difference]: Start difference. First operand 2381 states and 6585 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:46,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:46,224 INFO L93 Difference]: Finished difference Result 4989 states and 13547 transitions. [2022-03-03 17:20:46,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-03 17:20:46,225 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:20:46,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:46,240 INFO L225 Difference]: With dead ends: 4989 [2022-03-03 17:20:46,241 INFO L226 Difference]: Without dead ends: 4941 [2022-03-03 17:20:46,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=608, Invalid=3174, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 17:20:46,243 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 486 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:46,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1292 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:20:46,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4941 states. [2022-03-03 17:20:46,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4941 to 2381. [2022-03-03 17:20:46,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2381 states, 2380 states have (on average 2.7634453781512605) internal successors, (6577), 2380 states have internal predecessors, (6577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:46,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 6577 transitions. [2022-03-03 17:20:46,345 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 6577 transitions. Word has length 67 [2022-03-03 17:20:46,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:46,345 INFO L470 AbstractCegarLoop]: Abstraction has 2381 states and 6577 transitions. [2022-03-03 17:20:46,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:46,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 6577 transitions. [2022-03-03 17:20:46,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:20:46,349 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:46,349 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:46,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:46,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-03 17:20:46,567 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:46,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:46,568 INFO L85 PathProgramCache]: Analyzing trace with hash 468749757, now seen corresponding path program 6 times [2022-03-03 17:20:46,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:46,568 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836027537] [2022-03-03 17:20:46,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:46,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:46,623 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:46,624 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:46,624 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836027537] [2022-03-03 17:20:46,624 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836027537] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:46,624 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094597956] [2022-03-03 17:20:46,624 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:20:46,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:46,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:46,648 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) [2022-03-03 17:20:46,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-03 17:20:46,698 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:20:46,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:46,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:46,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:46,877 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:46,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:47,006 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:47,007 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094597956] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:47,007 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:47,007 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:20:47,007 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881080590] [2022-03-03 17:20:47,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:47,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:20:47,008 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:47,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:20:47,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:20:47,009 INFO L87 Difference]: Start difference. First operand 2381 states and 6577 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:47,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:47,781 INFO L93 Difference]: Finished difference Result 6333 states and 17294 transitions. [2022-03-03 17:20:47,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 17:20:47,781 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:20:47,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:47,794 INFO L225 Difference]: With dead ends: 6333 [2022-03-03 17:20:47,794 INFO L226 Difference]: Without dead ends: 6273 [2022-03-03 17:20:47,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=619, Invalid=2573, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:20:47,795 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 477 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:47,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 1282 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:20:47,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6273 states. [2022-03-03 17:20:47,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6273 to 3265. [2022-03-03 17:20:47,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3265 states, 3264 states have (on average 2.7879901960784315) internal successors, (9100), 3264 states have internal predecessors, (9100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:47,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3265 states to 3265 states and 9100 transitions. [2022-03-03 17:20:47,912 INFO L78 Accepts]: Start accepts. Automaton has 3265 states and 9100 transitions. Word has length 67 [2022-03-03 17:20:47,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:47,912 INFO L470 AbstractCegarLoop]: Abstraction has 3265 states and 9100 transitions. [2022-03-03 17:20:47,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:47,913 INFO L276 IsEmpty]: Start isEmpty. Operand 3265 states and 9100 transitions. [2022-03-03 17:20:47,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:20:47,923 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:47,923 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:47,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-03 17:20:48,147 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,SelfDestructingSolverStorable17 [2022-03-03 17:20:48,148 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:48,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:48,148 INFO L85 PathProgramCache]: Analyzing trace with hash 934529107, now seen corresponding path program 7 times [2022-03-03 17:20:48,148 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:48,148 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778079651] [2022-03-03 17:20:48,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:48,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:48,226 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:48,227 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:48,227 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778079651] [2022-03-03 17:20:48,227 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778079651] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:48,228 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663237371] [2022-03-03 17:20:48,228 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:20:48,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:48,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:48,248 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) [2022-03-03 17:20:48,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-03 17:20:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:48,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:48,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:48,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:48,624 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:20:48,624 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663237371] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:48,624 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:48,624 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:20:48,624 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153260874] [2022-03-03 17:20:48,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:48,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:20:48,625 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:48,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:20:48,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:20:48,626 INFO L87 Difference]: Start difference. First operand 3265 states and 9100 transitions. Second operand has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:49,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:49,131 INFO L93 Difference]: Finished difference Result 6231 states and 17042 transitions. [2022-03-03 17:20:49,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:20:49,131 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:20:49,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:49,142 INFO L225 Difference]: With dead ends: 6231 [2022-03-03 17:20:49,142 INFO L226 Difference]: Without dead ends: 6183 [2022-03-03 17:20:49,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=426, Invalid=1926, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:20:49,143 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 501 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:49,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 1022 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:20:49,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6183 states. [2022-03-03 17:20:49,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6183 to 3265. [2022-03-03 17:20:49,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3265 states, 3264 states have (on average 2.7855392156862746) internal successors, (9092), 3264 states have internal predecessors, (9092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:49,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3265 states to 3265 states and 9092 transitions. [2022-03-03 17:20:49,202 INFO L78 Accepts]: Start accepts. Automaton has 3265 states and 9092 transitions. Word has length 67 [2022-03-03 17:20:49,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:49,202 INFO L470 AbstractCegarLoop]: Abstraction has 3265 states and 9092 transitions. [2022-03-03 17:20:49,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:49,202 INFO L276 IsEmpty]: Start isEmpty. Operand 3265 states and 9092 transitions. [2022-03-03 17:20:49,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:20:49,207 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:49,207 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:49,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:49,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:49,428 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:49,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:49,428 INFO L85 PathProgramCache]: Analyzing trace with hash 636834387, now seen corresponding path program 8 times [2022-03-03 17:20:49,428 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:49,428 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146705621] [2022-03-03 17:20:49,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:49,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:49,498 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:49,498 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:49,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146705621] [2022-03-03 17:20:49,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146705621] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:49,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092081514] [2022-03-03 17:20:49,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:20:49,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:49,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:49,500 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) [2022-03-03 17:20:49,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-03 17:20:49,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:20:49,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:49,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:49,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:49,736 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:49,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:49,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092081514] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:49,878 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:49,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-03 17:20:49,878 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505866243] [2022-03-03 17:20:49,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:49,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:20:49,878 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:49,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:20:49,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:20:49,879 INFO L87 Difference]: Start difference. First operand 3265 states and 9092 transitions. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:50,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:50,511 INFO L93 Difference]: Finished difference Result 5910 states and 16220 transitions. [2022-03-03 17:20:50,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 17:20:50,511 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:20:50,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:50,523 INFO L225 Difference]: With dead ends: 5910 [2022-03-03 17:20:50,523 INFO L226 Difference]: Without dead ends: 5826 [2022-03-03 17:20:50,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=534, Invalid=2658, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:20:50,525 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 388 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:50,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 1347 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:20:50,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5826 states. [2022-03-03 17:20:50,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5826 to 3737. [2022-03-03 17:20:50,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3737 states, 3736 states have (on average 2.7971092077087794) internal successors, (10450), 3736 states have internal predecessors, (10450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:50,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 10450 transitions. [2022-03-03 17:20:50,591 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 10450 transitions. Word has length 67 [2022-03-03 17:20:50,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:50,591 INFO L470 AbstractCegarLoop]: Abstraction has 3737 states and 10450 transitions. [2022-03-03 17:20:50,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:50,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 10450 transitions. [2022-03-03 17:20:50,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:20:50,597 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:50,597 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:50,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:50,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:50,813 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:50,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:50,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1982646943, now seen corresponding path program 9 times [2022-03-03 17:20:50,814 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:50,814 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870649211] [2022-03-03 17:20:50,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:50,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:50,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:50,864 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:50,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870649211] [2022-03-03 17:20:50,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870649211] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:50,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123749544] [2022-03-03 17:20:50,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:20:50,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:50,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:50,865 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) [2022-03-03 17:20:50,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-03 17:20:50,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:20:50,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:50,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:50,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:51,062 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:51,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:51,149 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:51,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123749544] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:51,150 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:51,150 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:20:51,150 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920402387] [2022-03-03 17:20:51,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:51,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:20:51,150 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:51,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:20:51,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:20:51,151 INFO L87 Difference]: Start difference. First operand 3737 states and 10450 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:51,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:51,896 INFO L93 Difference]: Finished difference Result 6936 states and 18790 transitions. [2022-03-03 17:20:51,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 17:20:51,896 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:20:51,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:51,912 INFO L225 Difference]: With dead ends: 6936 [2022-03-03 17:20:51,912 INFO L226 Difference]: Without dead ends: 6861 [2022-03-03 17:20:51,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=668, Invalid=2754, Unknown=0, NotChecked=0, Total=3422 [2022-03-03 17:20:51,913 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 649 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:51,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 1308 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:20:51,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6861 states. [2022-03-03 17:20:51,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6861 to 4201. [2022-03-03 17:20:51,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4201 states, 4200 states have (on average 2.8119047619047617) internal successors, (11810), 4200 states have internal predecessors, (11810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:52,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4201 states to 4201 states and 11810 transitions. [2022-03-03 17:20:52,002 INFO L78 Accepts]: Start accepts. Automaton has 4201 states and 11810 transitions. Word has length 67 [2022-03-03 17:20:52,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:52,002 INFO L470 AbstractCegarLoop]: Abstraction has 4201 states and 11810 transitions. [2022-03-03 17:20:52,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:52,002 INFO L276 IsEmpty]: Start isEmpty. Operand 4201 states and 11810 transitions. [2022-03-03 17:20:52,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:20:52,010 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:52,010 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:52,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:52,223 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,SelfDestructingSolverStorable20 [2022-03-03 17:20:52,224 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:52,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:52,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1846541003, now seen corresponding path program 10 times [2022-03-03 17:20:52,224 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:52,225 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815155263] [2022-03-03 17:20:52,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:52,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:52,305 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:52,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815155263] [2022-03-03 17:20:52,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815155263] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:52,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450405649] [2022-03-03 17:20:52,305 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:20:52,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:52,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:52,306 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) [2022-03-03 17:20:52,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-03 17:20:52,397 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:20:52,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:52,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:52,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:52,530 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:52,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:20:52,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450405649] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:52,629 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:52,629 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:20:52,629 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711647091] [2022-03-03 17:20:52,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:52,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:20:52,630 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:52,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:20:52,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:20:52,630 INFO L87 Difference]: Start difference. First operand 4201 states and 11810 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:53,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:53,208 INFO L93 Difference]: Finished difference Result 5926 states and 16266 transitions. [2022-03-03 17:20:53,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-03 17:20:53,208 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:20:53,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:53,233 INFO L225 Difference]: With dead ends: 5926 [2022-03-03 17:20:53,233 INFO L226 Difference]: Without dead ends: 5878 [2022-03-03 17:20:53,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=532, Invalid=2438, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 17:20:53,236 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 486 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:53,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1157 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:20:53,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5878 states. [2022-03-03 17:20:53,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5878 to 4201. [2022-03-03 17:20:53,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4201 states, 4200 states have (on average 2.81) internal successors, (11802), 4200 states have internal predecessors, (11802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:53,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4201 states to 4201 states and 11802 transitions. [2022-03-03 17:20:53,315 INFO L78 Accepts]: Start accepts. Automaton has 4201 states and 11802 transitions. Word has length 67 [2022-03-03 17:20:53,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:53,316 INFO L470 AbstractCegarLoop]: Abstraction has 4201 states and 11802 transitions. [2022-03-03 17:20:53,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:53,316 INFO L276 IsEmpty]: Start isEmpty. Operand 4201 states and 11802 transitions. [2022-03-03 17:20:53,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:20:53,323 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:53,323 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:53,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:53,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:53,539 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:53,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:53,540 INFO L85 PathProgramCache]: Analyzing trace with hash 197880321, now seen corresponding path program 11 times [2022-03-03 17:20:53,540 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:53,540 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600466123] [2022-03-03 17:20:53,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:53,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:53,592 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:53,592 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600466123] [2022-03-03 17:20:53,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600466123] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:53,592 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761522066] [2022-03-03 17:20:53,592 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:20:53,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:53,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:53,593 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) [2022-03-03 17:20:53,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-03 17:20:53,635 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:20:53,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:53,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:53,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:53,778 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:53,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:53,869 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:53,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761522066] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:53,870 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:53,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:20:53,870 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254304024] [2022-03-03 17:20:53,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:53,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:20:53,871 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:53,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:20:53,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:20:53,871 INFO L87 Difference]: Start difference. First operand 4201 states and 11802 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:54,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:54,730 INFO L93 Difference]: Finished difference Result 8881 states and 24551 transitions. [2022-03-03 17:20:54,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-03 17:20:54,731 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:20:54,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:54,759 INFO L225 Difference]: With dead ends: 8881 [2022-03-03 17:20:54,760 INFO L226 Difference]: Without dead ends: 8821 [2022-03-03 17:20:54,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=949, Invalid=4453, Unknown=0, NotChecked=0, Total=5402 [2022-03-03 17:20:54,764 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 716 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:54,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [716 Valid, 1370 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:20:54,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8821 states. [2022-03-03 17:20:54,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8821 to 5229. [2022-03-03 17:20:54,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 5228 states have (on average 2.816564651874522) internal successors, (14725), 5228 states have internal predecessors, (14725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:54,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 14725 transitions. [2022-03-03 17:20:54,895 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 14725 transitions. Word has length 67 [2022-03-03 17:20:54,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:54,895 INFO L470 AbstractCegarLoop]: Abstraction has 5229 states and 14725 transitions. [2022-03-03 17:20:54,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:54,896 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 14725 transitions. [2022-03-03 17:20:54,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:20:54,904 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:54,904 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:54,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:55,120 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,SelfDestructingSolverStorable22 [2022-03-03 17:20:55,121 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:55,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:55,121 INFO L85 PathProgramCache]: Analyzing trace with hash 663659671, now seen corresponding path program 12 times [2022-03-03 17:20:55,121 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:55,121 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237072649] [2022-03-03 17:20:55,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:55,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:55,167 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:55,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237072649] [2022-03-03 17:20:55,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237072649] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:55,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677450779] [2022-03-03 17:20:55,168 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:20:55,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:55,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:55,184 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) [2022-03-03 17:20:55,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-03 17:20:55,280 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:20:55,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:55,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:55,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:55,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:55,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:55,533 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:20:55,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677450779] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:55,533 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:55,533 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:20:55,533 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315739035] [2022-03-03 17:20:55,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:55,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:20:55,534 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:55,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:20:55,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:20:55,534 INFO L87 Difference]: Start difference. First operand 5229 states and 14725 transitions. Second operand has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:56,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:56,346 INFO L93 Difference]: Finished difference Result 8744 states and 24213 transitions. [2022-03-03 17:20:56,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 17:20:56,346 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:20:56,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:56,364 INFO L225 Difference]: With dead ends: 8744 [2022-03-03 17:20:56,364 INFO L226 Difference]: Without dead ends: 8696 [2022-03-03 17:20:56,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1553 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=755, Invalid=3937, Unknown=0, NotChecked=0, Total=4692 [2022-03-03 17:20:56,366 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 721 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:56,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [721 Valid, 1139 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:20:56,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8696 states. [2022-03-03 17:20:56,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8696 to 5229. [2022-03-03 17:20:56,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 5228 states have (on average 2.815034429992349) internal successors, (14717), 5228 states have internal predecessors, (14717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:56,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 14717 transitions. [2022-03-03 17:20:56,492 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 14717 transitions. Word has length 67 [2022-03-03 17:20:56,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:56,492 INFO L470 AbstractCegarLoop]: Abstraction has 5229 states and 14717 transitions. [2022-03-03 17:20:56,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:56,493 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 14717 transitions. [2022-03-03 17:20:56,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:20:56,501 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:56,501 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:56,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-03-03 17:20:56,718 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,SelfDestructingSolverStorable23 [2022-03-03 17:20:56,718 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:56,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:56,719 INFO L85 PathProgramCache]: Analyzing trace with hash 365964951, now seen corresponding path program 13 times [2022-03-03 17:20:56,719 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:56,719 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497884147] [2022-03-03 17:20:56,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:56,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:56,770 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:56,771 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:56,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497884147] [2022-03-03 17:20:56,771 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497884147] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:56,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818351838] [2022-03-03 17:20:56,771 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:20:56,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:56,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:56,778 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) [2022-03-03 17:20:56,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-03 17:20:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:56,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:56,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:57,009 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:57,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:57,098 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:57,099 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818351838] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:57,099 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:57,099 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-03 17:20:57,099 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577443378] [2022-03-03 17:20:57,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:57,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:20:57,099 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:57,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:20:57,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:20:57,100 INFO L87 Difference]: Start difference. First operand 5229 states and 14717 transitions. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:58,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:58,013 INFO L93 Difference]: Finished difference Result 9420 states and 26227 transitions. [2022-03-03 17:20:58,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-03 17:20:58,014 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:20:58,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:58,028 INFO L225 Difference]: With dead ends: 9420 [2022-03-03 17:20:58,028 INFO L226 Difference]: Without dead ends: 9336 [2022-03-03 17:20:58,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2029 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=934, Invalid=5228, Unknown=0, NotChecked=0, Total=6162 [2022-03-03 17:20:58,035 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 489 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:58,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 1752 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:20:58,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9336 states. [2022-03-03 17:20:58,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9336 to 5905. [2022-03-03 17:20:58,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5905 states, 5904 states have (on average 2.8245257452574526) internal successors, (16676), 5904 states have internal predecessors, (16676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:58,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5905 states to 5905 states and 16676 transitions. [2022-03-03 17:20:58,271 INFO L78 Accepts]: Start accepts. Automaton has 5905 states and 16676 transitions. Word has length 67 [2022-03-03 17:20:58,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:58,271 INFO L470 AbstractCegarLoop]: Abstraction has 5905 states and 16676 transitions. [2022-03-03 17:20:58,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:58,272 INFO L276 IsEmpty]: Start isEmpty. Operand 5905 states and 16676 transitions. [2022-03-03 17:20:58,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:20:58,281 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:58,281 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:58,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:58,497 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,SelfDestructingSolverStorable24 [2022-03-03 17:20:58,498 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:58,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:58,498 INFO L85 PathProgramCache]: Analyzing trace with hash -297073973, now seen corresponding path program 14 times [2022-03-03 17:20:58,498 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:58,498 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622911167] [2022-03-03 17:20:58,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:58,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:58,553 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:58,554 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:58,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622911167] [2022-03-03 17:20:58,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622911167] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:58,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003654931] [2022-03-03 17:20:58,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:20:58,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:58,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:58,570 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) [2022-03-03 17:20:58,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-03 17:20:58,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:20:58,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:58,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:58,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:58,809 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:58,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:58,895 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:58,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003654931] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:58,896 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:58,896 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:20:58,896 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932922657] [2022-03-03 17:20:58,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:58,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:20:58,896 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:58,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:20:58,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:20:58,897 INFO L87 Difference]: Start difference. First operand 5905 states and 16676 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:59,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:59,675 INFO L93 Difference]: Finished difference Result 11298 states and 31316 transitions. [2022-03-03 17:20:59,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-03 17:20:59,675 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:20:59,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:59,692 INFO L225 Difference]: With dead ends: 11298 [2022-03-03 17:20:59,692 INFO L226 Difference]: Without dead ends: 11238 [2022-03-03 17:20:59,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1721 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=979, Invalid=3851, Unknown=0, NotChecked=0, Total=4830 [2022-03-03 17:20:59,694 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 675 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:59,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 1349 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:20:59,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11238 states. [2022-03-03 17:20:59,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11238 to 6861. [2022-03-03 17:20:59,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6861 states, 6860 states have (on average 2.8368804664723033) internal successors, (19461), 6860 states have internal predecessors, (19461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:59,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6861 states to 6861 states and 19461 transitions. [2022-03-03 17:20:59,823 INFO L78 Accepts]: Start accepts. Automaton has 6861 states and 19461 transitions. Word has length 67 [2022-03-03 17:20:59,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:59,823 INFO L470 AbstractCegarLoop]: Abstraction has 6861 states and 19461 transitions. [2022-03-03 17:20:59,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:59,823 INFO L276 IsEmpty]: Start isEmpty. Operand 6861 states and 19461 transitions. [2022-03-03 17:20:59,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:20:59,855 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:59,855 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:59,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:00,064 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,SelfDestructingSolverStorable25 [2022-03-03 17:21:00,064 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:00,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:00,065 INFO L85 PathProgramCache]: Analyzing trace with hash 168705377, now seen corresponding path program 15 times [2022-03-03 17:21:00,065 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:00,065 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234797540] [2022-03-03 17:21:00,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:00,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:00,118 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:00,118 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:00,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234797540] [2022-03-03 17:21:00,118 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234797540] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:00,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478060898] [2022-03-03 17:21:00,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:21:00,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:00,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:00,120 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) [2022-03-03 17:21:00,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-03 17:21:00,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:21:00,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:00,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:00,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:00,325 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:00,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:00,421 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:21:00,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478060898] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:00,421 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:00,421 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:21:00,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939801676] [2022-03-03 17:21:00,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:00,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:00,422 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:00,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:00,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:00,422 INFO L87 Difference]: Start difference. First operand 6861 states and 19461 transitions. Second operand has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:01,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:01,120 INFO L93 Difference]: Finished difference Result 11121 states and 30889 transitions. [2022-03-03 17:21:01,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-03 17:21:01,120 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:01,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:01,138 INFO L225 Difference]: With dead ends: 11121 [2022-03-03 17:21:01,139 INFO L226 Difference]: Without dead ends: 11073 [2022-03-03 17:21:01,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=762, Invalid=3398, Unknown=0, NotChecked=0, Total=4160 [2022-03-03 17:21:01,142 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 702 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:01,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 1457 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:21:01,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11073 states. [2022-03-03 17:21:01,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11073 to 6861. [2022-03-03 17:21:01,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6861 states, 6860 states have (on average 2.835714285714286) internal successors, (19453), 6860 states have internal predecessors, (19453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:01,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6861 states to 6861 states and 19453 transitions. [2022-03-03 17:21:01,354 INFO L78 Accepts]: Start accepts. Automaton has 6861 states and 19453 transitions. Word has length 67 [2022-03-03 17:21:01,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:01,354 INFO L470 AbstractCegarLoop]: Abstraction has 6861 states and 19453 transitions. [2022-03-03 17:21:01,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:01,354 INFO L276 IsEmpty]: Start isEmpty. Operand 6861 states and 19453 transitions. [2022-03-03 17:21:01,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:01,375 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:01,376 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:01,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:01,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:01,577 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:01,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:01,577 INFO L85 PathProgramCache]: Analyzing trace with hash -128989343, now seen corresponding path program 16 times [2022-03-03 17:21:01,577 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:01,577 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377659434] [2022-03-03 17:21:01,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:01,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:01,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:01,634 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:01,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377659434] [2022-03-03 17:21:01,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377659434] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:01,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718916163] [2022-03-03 17:21:01,634 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:21:01,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:01,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:01,636 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) [2022-03-03 17:21:01,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-03 17:21:01,683 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:21:01,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:01,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:01,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:01,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:01,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:02,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:02,027 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718916163] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:02,027 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:02,027 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-03 17:21:02,027 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676115595] [2022-03-03 17:21:02,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:02,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:21:02,027 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:02,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:21:02,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:21:02,028 INFO L87 Difference]: Start difference. First operand 6861 states and 19453 transitions. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:02,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:02,687 INFO L93 Difference]: Finished difference Result 12412 states and 34576 transitions. [2022-03-03 17:21:02,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-03 17:21:02,688 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:02,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:02,706 INFO L225 Difference]: With dead ends: 12412 [2022-03-03 17:21:02,706 INFO L226 Difference]: Without dead ends: 12328 [2022-03-03 17:21:02,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2006 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=976, Invalid=4876, Unknown=0, NotChecked=0, Total=5852 [2022-03-03 17:21:02,708 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 908 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:02,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 1088 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:21:02,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12328 states. [2022-03-03 17:21:02,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12328 to 7661. [2022-03-03 17:21:02,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7661 states, 7660 states have (on average 2.8460835509138382) internal successors, (21801), 7660 states have internal predecessors, (21801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:02,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7661 states to 7661 states and 21801 transitions. [2022-03-03 17:21:02,866 INFO L78 Accepts]: Start accepts. Automaton has 7661 states and 21801 transitions. Word has length 67 [2022-03-03 17:21:02,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:02,866 INFO L470 AbstractCegarLoop]: Abstraction has 7661 states and 21801 transitions. [2022-03-03 17:21:02,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:02,866 INFO L276 IsEmpty]: Start isEmpty. Operand 7661 states and 21801 transitions. [2022-03-03 17:21:02,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:02,876 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:02,876 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:02,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:03,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-03 17:21:03,088 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:03,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:03,089 INFO L85 PathProgramCache]: Analyzing trace with hash 104450447, now seen corresponding path program 17 times [2022-03-03 17:21:03,089 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:03,089 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601093862] [2022-03-03 17:21:03,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:03,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:03,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:03,203 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:03,203 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601093862] [2022-03-03 17:21:03,203 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601093862] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:03,203 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844779732] [2022-03-03 17:21:03,203 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:21:03,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:03,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:03,205 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) [2022-03-03 17:21:03,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-03 17:21:03,265 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:21:03,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:03,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:03,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:03,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:03,543 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844779732] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:03,543 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:03,543 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-03 17:21:03,543 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874333882] [2022-03-03 17:21:03,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:03,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:21:03,543 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:03,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:21:03,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:21:03,544 INFO L87 Difference]: Start difference. First operand 7661 states and 21801 transitions. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:03,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:03,783 INFO L93 Difference]: Finished difference Result 8061 states and 22752 transitions. [2022-03-03 17:21:03,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-03 17:21:03,783 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:03,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:03,794 INFO L225 Difference]: With dead ends: 8061 [2022-03-03 17:21:03,794 INFO L226 Difference]: Without dead ends: 8013 [2022-03-03 17:21:03,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:21:03,795 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 270 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:03,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 1152 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:21:03,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8013 states. [2022-03-03 17:21:03,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8013 to 7669. [2022-03-03 17:21:03,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7669 states, 7668 states have (on average 2.845983307250913) internal successors, (21823), 7668 states have internal predecessors, (21823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:03,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7669 states to 7669 states and 21823 transitions. [2022-03-03 17:21:03,948 INFO L78 Accepts]: Start accepts. Automaton has 7669 states and 21823 transitions. Word has length 67 [2022-03-03 17:21:03,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:03,948 INFO L470 AbstractCegarLoop]: Abstraction has 7669 states and 21823 transitions. [2022-03-03 17:21:03,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:03,948 INFO L276 IsEmpty]: Start isEmpty. Operand 7669 states and 21823 transitions. [2022-03-03 17:21:03,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:03,957 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:03,957 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:03,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:04,163 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,SelfDestructingSolverStorable28 [2022-03-03 17:21:04,164 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:04,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:04,164 INFO L85 PathProgramCache]: Analyzing trace with hash 983231093, now seen corresponding path program 18 times [2022-03-03 17:21:04,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:04,165 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321471271] [2022-03-03 17:21:04,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:04,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:04,235 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:04,235 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:04,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321471271] [2022-03-03 17:21:04,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321471271] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:04,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180282538] [2022-03-03 17:21:04,236 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:21:04,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:04,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:04,237 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) [2022-03-03 17:21:04,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-03 17:21:04,292 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:21:04,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:04,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:04,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:04,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:04,540 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:04,541 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180282538] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:04,541 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:04,541 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-03 17:21:04,541 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213511180] [2022-03-03 17:21:04,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:04,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-03 17:21:04,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:04,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-03 17:21:04,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-03-03 17:21:04,542 INFO L87 Difference]: Start difference. First operand 7669 states and 21823 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:05,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:05,458 INFO L93 Difference]: Finished difference Result 10897 states and 30330 transitions. [2022-03-03 17:21:05,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-03 17:21:05,458 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:05,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:05,474 INFO L225 Difference]: With dead ends: 10897 [2022-03-03 17:21:05,474 INFO L226 Difference]: Without dead ends: 10747 [2022-03-03 17:21:05,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1965 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1172, Invalid=4680, Unknown=0, NotChecked=0, Total=5852 [2022-03-03 17:21:05,478 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 840 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:05,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [840 Valid, 1316 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:21:05,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10747 states. [2022-03-03 17:21:05,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10747 to 8081. [2022-03-03 17:21:05,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8081 states, 8080 states have (on average 2.853960396039604) internal successors, (23060), 8080 states have internal predecessors, (23060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:05,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8081 states to 8081 states and 23060 transitions. [2022-03-03 17:21:05,691 INFO L78 Accepts]: Start accepts. Automaton has 8081 states and 23060 transitions. Word has length 67 [2022-03-03 17:21:05,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:05,691 INFO L470 AbstractCegarLoop]: Abstraction has 8081 states and 23060 transitions. [2022-03-03 17:21:05,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:05,691 INFO L276 IsEmpty]: Start isEmpty. Operand 8081 states and 23060 transitions. [2022-03-03 17:21:05,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:05,709 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:05,709 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:05,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-03-03 17:21:05,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:05,935 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:05,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:05,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1449010443, now seen corresponding path program 19 times [2022-03-03 17:21:05,935 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:05,935 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531364474] [2022-03-03 17:21:05,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:05,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:05,986 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:05,986 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531364474] [2022-03-03 17:21:05,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531364474] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:05,986 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415058214] [2022-03-03 17:21:05,986 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:21:05,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:05,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:06,000 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) [2022-03-03 17:21:06,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-03 17:21:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:06,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:06,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:06,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:06,260 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:06,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415058214] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:06,261 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:06,261 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-03 17:21:06,261 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79795556] [2022-03-03 17:21:06,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:06,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-03 17:21:06,262 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:06,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-03 17:21:06,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-03-03 17:21:06,263 INFO L87 Difference]: Start difference. First operand 8081 states and 23060 transitions. Second operand has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:06,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:06,685 INFO L93 Difference]: Finished difference Result 10096 states and 28386 transitions. [2022-03-03 17:21:06,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 17:21:06,685 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:06,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:06,701 INFO L225 Difference]: With dead ends: 10096 [2022-03-03 17:21:06,701 INFO L226 Difference]: Without dead ends: 10072 [2022-03-03 17:21:06,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=610, Invalid=2582, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:21:06,702 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 596 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:06,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 1503 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:21:06,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10072 states. [2022-03-03 17:21:06,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10072 to 8101. [2022-03-03 17:21:06,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8101 states, 8100 states have (on average 2.8517283950617283) internal successors, (23099), 8100 states have internal predecessors, (23099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:06,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8101 states to 8101 states and 23099 transitions. [2022-03-03 17:21:06,864 INFO L78 Accepts]: Start accepts. Automaton has 8101 states and 23099 transitions. Word has length 67 [2022-03-03 17:21:06,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:06,864 INFO L470 AbstractCegarLoop]: Abstraction has 8101 states and 23099 transitions. [2022-03-03 17:21:06,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:06,865 INFO L276 IsEmpty]: Start isEmpty. Operand 8101 states and 23099 transitions. [2022-03-03 17:21:06,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:06,875 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:06,876 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:06,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:07,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:07,078 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:07,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:07,078 INFO L85 PathProgramCache]: Analyzing trace with hash 277536545, now seen corresponding path program 20 times [2022-03-03 17:21:07,079 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:07,079 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741799741] [2022-03-03 17:21:07,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:07,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:07,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:07,158 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:07,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741799741] [2022-03-03 17:21:07,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741799741] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:07,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784184573] [2022-03-03 17:21:07,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:21:07,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:07,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:07,160 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) [2022-03-03 17:21:07,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-03 17:21:07,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:21:07,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:07,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:07,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:07,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:07,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:07,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784184573] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:07,370 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:07,371 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-03-03 17:21:07,371 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098131254] [2022-03-03 17:21:07,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:07,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 17:21:07,371 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:07,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 17:21:07,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-03-03 17:21:07,371 INFO L87 Difference]: Start difference. First operand 8101 states and 23099 transitions. Second operand has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:07,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:07,594 INFO L93 Difference]: Finished difference Result 8908 states and 25140 transitions. [2022-03-03 17:21:07,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:21:07,595 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:07,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:07,607 INFO L225 Difference]: With dead ends: 8908 [2022-03-03 17:21:07,608 INFO L226 Difference]: Without dead ends: 8848 [2022-03-03 17:21:07,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=255, Invalid=867, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:21:07,609 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 412 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:07,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 910 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:21:07,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8848 states. [2022-03-03 17:21:07,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8848 to 7869. [2022-03-03 17:21:07,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7869 states, 7868 states have (on average 2.845577020843925) internal successors, (22389), 7868 states have internal predecessors, (22389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:07,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7869 states to 7869 states and 22389 transitions. [2022-03-03 17:21:07,797 INFO L78 Accepts]: Start accepts. Automaton has 7869 states and 22389 transitions. Word has length 67 [2022-03-03 17:21:07,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:07,797 INFO L470 AbstractCegarLoop]: Abstraction has 7869 states and 22389 transitions. [2022-03-03 17:21:07,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:07,797 INFO L276 IsEmpty]: Start isEmpty. Operand 7869 states and 22389 transitions. [2022-03-03 17:21:07,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:07,809 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:07,809 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:07,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:08,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:08,024 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:08,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:08,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1492168501, now seen corresponding path program 21 times [2022-03-03 17:21:08,024 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:08,024 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088528369] [2022-03-03 17:21:08,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:08,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:08,089 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:08,089 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:08,089 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088528369] [2022-03-03 17:21:08,089 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088528369] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:08,090 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249354505] [2022-03-03 17:21:08,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:21:08,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:08,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:08,105 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) [2022-03-03 17:21:08,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-03 17:21:08,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:21:08,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:08,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:08,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:08,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:08,447 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:08,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249354505] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:08,448 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:08,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-03 17:21:08,448 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985965838] [2022-03-03 17:21:08,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:08,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:08,448 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:08,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:08,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:08,449 INFO L87 Difference]: Start difference. First operand 7869 states and 22389 transitions. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:09,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:09,591 INFO L93 Difference]: Finished difference Result 13605 states and 38181 transitions. [2022-03-03 17:21:09,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-03 17:21:09,591 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:09,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:09,613 INFO L225 Difference]: With dead ends: 13605 [2022-03-03 17:21:09,613 INFO L226 Difference]: Without dead ends: 13530 [2022-03-03 17:21:09,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3284 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1601, Invalid=7711, Unknown=0, NotChecked=0, Total=9312 [2022-03-03 17:21:09,614 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 635 mSDsluCounter, 2242 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:09,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 2191 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:21:09,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13530 states. [2022-03-03 17:21:09,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13530 to 8613. [2022-03-03 17:21:09,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8613 states, 8612 states have (on average 2.8503251277287505) internal successors, (24547), 8612 states have internal predecessors, (24547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:09,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8613 states to 8613 states and 24547 transitions. [2022-03-03 17:21:09,760 INFO L78 Accepts]: Start accepts. Automaton has 8613 states and 24547 transitions. Word has length 67 [2022-03-03 17:21:09,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:09,760 INFO L470 AbstractCegarLoop]: Abstraction has 8613 states and 24547 transitions. [2022-03-03 17:21:09,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:09,761 INFO L276 IsEmpty]: Start isEmpty. Operand 8613 states and 24547 transitions. [2022-03-03 17:21:09,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:09,771 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:09,771 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:09,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:09,983 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,SelfDestructingSolverStorable32 [2022-03-03 17:21:09,983 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:09,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:09,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1957947851, now seen corresponding path program 22 times [2022-03-03 17:21:09,984 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:09,984 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460339931] [2022-03-03 17:21:09,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:09,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:10,072 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:10,073 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:10,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460339931] [2022-03-03 17:21:10,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460339931] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:10,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266957323] [2022-03-03 17:21:10,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:21:10,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:10,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:10,074 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) [2022-03-03 17:21:10,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-03 17:21:10,148 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:21:10,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:10,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:10,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:10,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:10,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:10,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:10,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266957323] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:10,395 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:10,395 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-03 17:21:10,395 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375867856] [2022-03-03 17:21:10,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:10,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:10,395 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:10,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:10,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:10,396 INFO L87 Difference]: Start difference. First operand 8613 states and 24547 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:11,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:11,357 INFO L93 Difference]: Finished difference Result 12702 states and 35830 transitions. [2022-03-03 17:21:11,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-03 17:21:11,358 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:11,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:11,381 INFO L225 Difference]: With dead ends: 12702 [2022-03-03 17:21:11,381 INFO L226 Difference]: Without dead ends: 12654 [2022-03-03 17:21:11,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2260 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1106, Invalid=5700, Unknown=0, NotChecked=0, Total=6806 [2022-03-03 17:21:11,382 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 571 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:11,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [571 Valid, 1554 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:21:11,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12654 states. [2022-03-03 17:21:11,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12654 to 8113. [2022-03-03 17:21:11,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8113 states, 8112 states have (on average 2.844181459566075) internal successors, (23072), 8112 states have internal predecessors, (23072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8113 states to 8113 states and 23072 transitions. [2022-03-03 17:21:11,550 INFO L78 Accepts]: Start accepts. Automaton has 8113 states and 23072 transitions. Word has length 67 [2022-03-03 17:21:11,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:11,551 INFO L470 AbstractCegarLoop]: Abstraction has 8113 states and 23072 transitions. [2022-03-03 17:21:11,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:11,551 INFO L276 IsEmpty]: Start isEmpty. Operand 8113 states and 23072 transitions. [2022-03-03 17:21:11,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:11,562 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:11,562 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:11,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:11,778 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,SelfDestructingSolverStorable33 [2022-03-03 17:21:11,778 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:11,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:11,778 INFO L85 PathProgramCache]: Analyzing trace with hash -292598121, now seen corresponding path program 23 times [2022-03-03 17:21:11,779 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:11,779 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459439576] [2022-03-03 17:21:11,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:11,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:11,838 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:11,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:11,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459439576] [2022-03-03 17:21:11,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459439576] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:11,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599015106] [2022-03-03 17:21:11,838 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:21:11,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:11,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:11,840 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) [2022-03-03 17:21:11,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-03 17:21:11,919 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:21:11,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:11,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:11,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:12,043 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:12,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:12,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:12,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599015106] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:12,134 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:12,134 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-03 17:21:12,134 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122795190] [2022-03-03 17:21:12,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:12,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:12,135 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:12,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:12,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:12,135 INFO L87 Difference]: Start difference. First operand 8113 states and 23072 transitions. Second operand has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:12,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:12,935 INFO L93 Difference]: Finished difference Result 12007 states and 33687 transitions. [2022-03-03 17:21:12,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-03 17:21:12,935 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:12,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:12,955 INFO L225 Difference]: With dead ends: 12007 [2022-03-03 17:21:12,955 INFO L226 Difference]: Without dead ends: 11947 [2022-03-03 17:21:12,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2321 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1410, Invalid=5232, Unknown=0, NotChecked=0, Total=6642 [2022-03-03 17:21:12,957 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 661 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:12,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 1303 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:21:12,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11947 states. [2022-03-03 17:21:13,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11947 to 8669. [2022-03-03 17:21:13,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8669 states, 8668 states have (on average 2.845523765574527) internal successors, (24665), 8668 states have internal predecessors, (24665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:13,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8669 states to 8669 states and 24665 transitions. [2022-03-03 17:21:13,116 INFO L78 Accepts]: Start accepts. Automaton has 8669 states and 24665 transitions. Word has length 67 [2022-03-03 17:21:13,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:13,116 INFO L470 AbstractCegarLoop]: Abstraction has 8669 states and 24665 transitions. [2022-03-03 17:21:13,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:13,116 INFO L276 IsEmpty]: Start isEmpty. Operand 8669 states and 24665 transitions. [2022-03-03 17:21:13,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:13,129 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:13,129 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:13,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:13,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:13,345 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:13,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:13,345 INFO L85 PathProgramCache]: Analyzing trace with hash 173181229, now seen corresponding path program 24 times [2022-03-03 17:21:13,345 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:13,345 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440263617] [2022-03-03 17:21:13,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:13,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:13,408 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:13,408 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:13,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440263617] [2022-03-03 17:21:13,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440263617] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:13,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212305232] [2022-03-03 17:21:13,408 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:21:13,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:13,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:13,410 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) [2022-03-03 17:21:13,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-03 17:21:13,466 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:21:13,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:13,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:13,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:13,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:13,687 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:13,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212305232] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:13,687 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:13,687 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-03 17:21:13,687 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124441141] [2022-03-03 17:21:13,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:13,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:13,688 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:13,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:13,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:13,688 INFO L87 Difference]: Start difference. First operand 8669 states and 24665 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:14,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:14,283 INFO L93 Difference]: Finished difference Result 11551 states and 32449 transitions. [2022-03-03 17:21:14,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 17:21:14,284 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:14,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:14,305 INFO L225 Difference]: With dead ends: 11551 [2022-03-03 17:21:14,306 INFO L226 Difference]: Without dead ends: 11503 [2022-03-03 17:21:14,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1265 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=871, Invalid=3161, Unknown=0, NotChecked=0, Total=4032 [2022-03-03 17:21:14,307 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 609 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:14,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 1181 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:21:14,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11503 states. [2022-03-03 17:21:14,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11503 to 8353. [2022-03-03 17:21:14,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8353 states, 8352 states have (on average 2.842432950191571) internal successors, (23740), 8352 states have internal predecessors, (23740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:14,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8353 states to 8353 states and 23740 transitions. [2022-03-03 17:21:14,477 INFO L78 Accepts]: Start accepts. Automaton has 8353 states and 23740 transitions. Word has length 67 [2022-03-03 17:21:14,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:14,478 INFO L470 AbstractCegarLoop]: Abstraction has 8353 states and 23740 transitions. [2022-03-03 17:21:14,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:14,478 INFO L276 IsEmpty]: Start isEmpty. Operand 8353 states and 23740 transitions. [2022-03-03 17:21:14,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:14,489 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:14,489 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:14,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:14,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:14,695 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:14,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:14,696 INFO L85 PathProgramCache]: Analyzing trace with hash -124513491, now seen corresponding path program 25 times [2022-03-03 17:21:14,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:14,696 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009006571] [2022-03-03 17:21:14,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:14,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:14,782 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:14,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009006571] [2022-03-03 17:21:14,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009006571] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:14,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822083373] [2022-03-03 17:21:14,783 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:21:14,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:14,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:14,785 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) [2022-03-03 17:21:14,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-03 17:21:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:14,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:14,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:14,973 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:14,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:15,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:15,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822083373] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:15,059 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:15,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-03-03 17:21:15,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991597991] [2022-03-03 17:21:15,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:15,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:21:15,066 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:15,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:21:15,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:21:15,067 INFO L87 Difference]: Start difference. First operand 8353 states and 23740 transitions. Second operand has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:15,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:15,276 INFO L93 Difference]: Finished difference Result 8669 states and 24545 transitions. [2022-03-03 17:21:15,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:21:15,276 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:15,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:15,292 INFO L225 Difference]: With dead ends: 8669 [2022-03-03 17:21:15,292 INFO L226 Difference]: Without dead ends: 8633 [2022-03-03 17:21:15,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=320, Invalid=1086, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:21:15,293 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 308 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:15,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 1032 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:21:15,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8633 states. [2022-03-03 17:21:15,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8633 to 8361. [2022-03-03 17:21:15,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8361 states, 8360 states have (on average 2.8423444976076553) internal successors, (23762), 8360 states have internal predecessors, (23762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:15,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8361 states to 8361 states and 23762 transitions. [2022-03-03 17:21:15,420 INFO L78 Accepts]: Start accepts. Automaton has 8361 states and 23762 transitions. Word has length 67 [2022-03-03 17:21:15,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:15,420 INFO L470 AbstractCegarLoop]: Abstraction has 8361 states and 23762 transitions. [2022-03-03 17:21:15,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:15,420 INFO L276 IsEmpty]: Start isEmpty. Operand 8361 states and 23762 transitions. [2022-03-03 17:21:15,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:15,431 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:15,431 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:15,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:15,647 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,SelfDestructingSolverStorable36 [2022-03-03 17:21:15,647 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:15,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:15,647 INFO L85 PathProgramCache]: Analyzing trace with hash -312172267, now seen corresponding path program 26 times [2022-03-03 17:21:15,648 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:15,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992775662] [2022-03-03 17:21:15,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:15,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:15,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:15,708 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:15,708 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992775662] [2022-03-03 17:21:15,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992775662] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:15,708 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751020204] [2022-03-03 17:21:15,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:21:15,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:15,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:15,710 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) [2022-03-03 17:21:15,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-03 17:21:15,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:21:15,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:15,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:15,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:15,930 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:15,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:16,002 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:21:16,002 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751020204] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:16,002 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:16,002 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:21:16,002 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204785501] [2022-03-03 17:21:16,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:16,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:16,003 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:16,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:16,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:16,003 INFO L87 Difference]: Start difference. First operand 8361 states and 23762 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:16,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:16,489 INFO L93 Difference]: Finished difference Result 11412 states and 31799 transitions. [2022-03-03 17:21:16,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 17:21:16,489 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:16,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:16,508 INFO L225 Difference]: With dead ends: 11412 [2022-03-03 17:21:16,508 INFO L226 Difference]: Without dead ends: 11277 [2022-03-03 17:21:16,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 925 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=601, Invalid=2369, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 17:21:16,509 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 557 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:16,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 1349 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:21:16,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11277 states. [2022-03-03 17:21:16,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11277 to 9065. [2022-03-03 17:21:16,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9065 states, 9064 states have (on average 2.8506178287731685) internal successors, (25838), 9064 states have internal predecessors, (25838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:16,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9065 states to 9065 states and 25838 transitions. [2022-03-03 17:21:16,658 INFO L78 Accepts]: Start accepts. Automaton has 9065 states and 25838 transitions. Word has length 67 [2022-03-03 17:21:16,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:16,658 INFO L470 AbstractCegarLoop]: Abstraction has 9065 states and 25838 transitions. [2022-03-03 17:21:16,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:16,658 INFO L276 IsEmpty]: Start isEmpty. Operand 9065 states and 25838 transitions. [2022-03-03 17:21:16,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:16,670 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:16,670 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:16,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:16,885 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,SelfDestructingSolverStorable37 [2022-03-03 17:21:16,886 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:16,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:16,886 INFO L85 PathProgramCache]: Analyzing trace with hash 153607083, now seen corresponding path program 27 times [2022-03-03 17:21:16,886 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:16,886 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869754331] [2022-03-03 17:21:16,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:16,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:16,957 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:16,958 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:16,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869754331] [2022-03-03 17:21:16,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869754331] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:16,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602765639] [2022-03-03 17:21:16,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:21:16,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:16,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:16,959 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) [2022-03-03 17:21:16,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-03 17:21:17,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:21:17,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:17,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:17,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:17,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:17,263 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:17,264 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602765639] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:17,264 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:17,264 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:21:17,264 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343921164] [2022-03-03 17:21:17,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:17,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:17,264 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:17,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:17,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:17,265 INFO L87 Difference]: Start difference. First operand 9065 states and 25838 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:17,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:17,771 INFO L93 Difference]: Finished difference Result 10375 states and 29115 transitions. [2022-03-03 17:21:17,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:21:17,771 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:17,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:17,788 INFO L225 Difference]: With dead ends: 10375 [2022-03-03 17:21:17,789 INFO L226 Difference]: Without dead ends: 10327 [2022-03-03 17:21:17,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=391, Invalid=1865, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:21:17,790 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 418 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:17,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 1304 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:21:17,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10327 states. [2022-03-03 17:21:17,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10327 to 9065. [2022-03-03 17:21:17,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9065 states, 9064 states have (on average 2.8497352162400706) internal successors, (25830), 9064 states have internal predecessors, (25830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:17,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9065 states to 9065 states and 25830 transitions. [2022-03-03 17:21:17,973 INFO L78 Accepts]: Start accepts. Automaton has 9065 states and 25830 transitions. Word has length 67 [2022-03-03 17:21:17,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:17,973 INFO L470 AbstractCegarLoop]: Abstraction has 9065 states and 25830 transitions. [2022-03-03 17:21:17,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:17,973 INFO L276 IsEmpty]: Start isEmpty. Operand 9065 states and 25830 transitions. [2022-03-03 17:21:17,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:17,987 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:17,987 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:18,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:18,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-03-03 17:21:18,191 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:18,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:18,191 INFO L85 PathProgramCache]: Analyzing trace with hash -182842027, now seen corresponding path program 28 times [2022-03-03 17:21:18,191 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:18,191 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756876433] [2022-03-03 17:21:18,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:18,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:18,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:18,244 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:18,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756876433] [2022-03-03 17:21:18,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756876433] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:18,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439378228] [2022-03-03 17:21:18,244 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:21:18,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:18,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:18,259 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) [2022-03-03 17:21:18,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-03 17:21:18,305 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:21:18,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:18,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:18,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:18,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:18,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:21:18,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439378228] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:18,489 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:18,489 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:21:18,489 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461366910] [2022-03-03 17:21:18,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:18,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:18,489 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:18,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:18,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:18,490 INFO L87 Difference]: Start difference. First operand 9065 states and 25830 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:19,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:19,064 INFO L93 Difference]: Finished difference Result 12372 states and 34699 transitions. [2022-03-03 17:21:19,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 17:21:19,064 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:19,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:19,088 INFO L225 Difference]: With dead ends: 12372 [2022-03-03 17:21:19,089 INFO L226 Difference]: Without dead ends: 12297 [2022-03-03 17:21:19,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=614, Invalid=2692, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 17:21:19,090 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 685 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:19,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 954 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:21:19,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12297 states. [2022-03-03 17:21:19,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12297 to 9789. [2022-03-03 17:21:19,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9789 states, 9788 states have (on average 2.852983244789538) internal successors, (27925), 9788 states have internal predecessors, (27925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:19,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9789 states to 9789 states and 27925 transitions. [2022-03-03 17:21:19,278 INFO L78 Accepts]: Start accepts. Automaton has 9789 states and 27925 transitions. Word has length 67 [2022-03-03 17:21:19,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:19,278 INFO L470 AbstractCegarLoop]: Abstraction has 9789 states and 27925 transitions. [2022-03-03 17:21:19,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:19,279 INFO L276 IsEmpty]: Start isEmpty. Operand 9789 states and 27925 transitions. [2022-03-03 17:21:19,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:19,292 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:19,292 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:19,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-03-03 17:21:19,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-03 17:21:19,493 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:19,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:19,493 INFO L85 PathProgramCache]: Analyzing trace with hash 282937323, now seen corresponding path program 29 times [2022-03-03 17:21:19,493 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:19,493 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191071224] [2022-03-03 17:21:19,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:19,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:19,543 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:19,543 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191071224] [2022-03-03 17:21:19,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191071224] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:19,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303087770] [2022-03-03 17:21:19,544 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:21:19,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:19,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:19,545 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) [2022-03-03 17:21:19,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-03 17:21:19,601 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:21:19,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:19,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:19,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:19,757 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:19,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:19,857 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:19,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303087770] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:19,857 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:19,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:21:19,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380733976] [2022-03-03 17:21:19,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:19,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:19,857 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:19,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:19,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:19,858 INFO L87 Difference]: Start difference. First operand 9789 states and 27925 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:20,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:20,546 INFO L93 Difference]: Finished difference Result 11335 states and 31979 transitions. [2022-03-03 17:21:20,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 17:21:20,546 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:20,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:20,563 INFO L225 Difference]: With dead ends: 11335 [2022-03-03 17:21:20,563 INFO L226 Difference]: Without dead ends: 11287 [2022-03-03 17:21:20,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=421, Invalid=2231, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 17:21:20,564 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 371 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:20,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 1538 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:21:20,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11287 states. [2022-03-03 17:21:20,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11287 to 9429. [2022-03-03 17:21:20,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9429 states, 9428 states have (on average 2.8480059397539246) internal successors, (26851), 9428 states have internal predecessors, (26851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:20,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9429 states to 9429 states and 26851 transitions. [2022-03-03 17:21:20,702 INFO L78 Accepts]: Start accepts. Automaton has 9429 states and 26851 transitions. Word has length 67 [2022-03-03 17:21:20,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:20,702 INFO L470 AbstractCegarLoop]: Abstraction has 9429 states and 26851 transitions. [2022-03-03 17:21:20,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:20,702 INFO L276 IsEmpty]: Start isEmpty. Operand 9429 states and 26851 transitions. [2022-03-03 17:21:20,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:20,713 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:20,713 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:20,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:20,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:20,916 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:20,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:20,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1967608649, now seen corresponding path program 30 times [2022-03-03 17:21:20,916 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:20,916 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433801801] [2022-03-03 17:21:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:20,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:20,980 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:20,981 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:20,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433801801] [2022-03-03 17:21:20,981 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433801801] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:20,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555457641] [2022-03-03 17:21:20,981 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:21:20,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:20,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:20,988 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) [2022-03-03 17:21:21,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-03 17:21:21,084 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:21:21,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:21,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:21,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:21,252 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:21,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:21,344 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:21:21,344 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555457641] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:21,344 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:21,344 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:21:21,344 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496560336] [2022-03-03 17:21:21,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:21,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:21,345 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:21,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:21,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:21,345 INFO L87 Difference]: Start difference. First operand 9429 states and 26851 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:21,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:21,830 INFO L93 Difference]: Finished difference Result 12040 states and 33806 transitions. [2022-03-03 17:21:21,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:21:21,831 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:21,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:21,852 INFO L225 Difference]: With dead ends: 12040 [2022-03-03 17:21:21,852 INFO L226 Difference]: Without dead ends: 11980 [2022-03-03 17:21:21,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=466, Invalid=1790, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:21:21,853 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 479 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:21,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 1016 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:21:21,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11980 states. [2022-03-03 17:21:22,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11980 to 10313. [2022-03-03 17:21:22,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10313 states, 10312 states have (on average 2.8485259891388672) internal successors, (29374), 10312 states have internal predecessors, (29374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:22,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10313 states to 10313 states and 29374 transitions. [2022-03-03 17:21:22,092 INFO L78 Accepts]: Start accepts. Automaton has 10313 states and 29374 transitions. Word has length 67 [2022-03-03 17:21:22,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:22,092 INFO L470 AbstractCegarLoop]: Abstraction has 10313 states and 29374 transitions. [2022-03-03 17:21:22,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:22,092 INFO L276 IsEmpty]: Start isEmpty. Operand 10313 states and 29374 transitions. [2022-03-03 17:21:22,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:22,104 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:22,105 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:22,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:22,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:22,310 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:22,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:22,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1501829299, now seen corresponding path program 31 times [2022-03-03 17:21:22,310 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:22,310 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735361461] [2022-03-03 17:21:22,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:22,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:22,358 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:22,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735361461] [2022-03-03 17:21:22,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735361461] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:22,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302710445] [2022-03-03 17:21:22,358 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:21:22,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:22,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:22,379 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) [2022-03-03 17:21:22,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-03 17:21:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:22,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:22,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:22,623 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:22,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:22,742 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:22,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302710445] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:22,743 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:22,743 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:21:22,743 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656772198] [2022-03-03 17:21:22,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:22,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:22,743 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:22,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:22,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:22,744 INFO L87 Difference]: Start difference. First operand 10313 states and 29374 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:23,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:23,237 INFO L93 Difference]: Finished difference Result 11913 states and 33504 transitions. [2022-03-03 17:21:23,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 17:21:23,237 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:23,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:23,260 INFO L225 Difference]: With dead ends: 11913 [2022-03-03 17:21:23,260 INFO L226 Difference]: Without dead ends: 11865 [2022-03-03 17:21:23,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=367, Invalid=1613, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 17:21:23,261 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 401 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:23,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 984 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:21:23,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11865 states. [2022-03-03 17:21:23,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11865 to 9773. [2022-03-03 17:21:23,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9773 states, 9772 states have (on average 2.847421203438395) internal successors, (27825), 9772 states have internal predecessors, (27825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:23,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9773 states to 9773 states and 27825 transitions. [2022-03-03 17:21:23,420 INFO L78 Accepts]: Start accepts. Automaton has 9773 states and 27825 transitions. Word has length 67 [2022-03-03 17:21:23,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:23,420 INFO L470 AbstractCegarLoop]: Abstraction has 9773 states and 27825 transitions. [2022-03-03 17:21:23,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:23,420 INFO L276 IsEmpty]: Start isEmpty. Operand 9773 states and 27825 transitions. [2022-03-03 17:21:23,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:23,432 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:23,432 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:23,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:23,648 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,SelfDestructingSolverStorable42 [2022-03-03 17:21:23,648 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:23,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:23,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1799524019, now seen corresponding path program 32 times [2022-03-03 17:21:23,648 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:23,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343115839] [2022-03-03 17:21:23,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:23,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:23,691 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:23,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:23,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343115839] [2022-03-03 17:21:23,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343115839] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:23,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347070566] [2022-03-03 17:21:23,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:21:23,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:23,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:23,693 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) [2022-03-03 17:21:23,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-03 17:21:23,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:21:23,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:23,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:23,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:23,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:23,954 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:23,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347070566] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:23,954 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:23,954 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-03 17:21:23,954 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34496001] [2022-03-03 17:21:23,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:23,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:21:23,961 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:23,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:21:23,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:21:23,962 INFO L87 Difference]: Start difference. First operand 9773 states and 27825 transitions. Second operand has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:24,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:24,320 INFO L93 Difference]: Finished difference Result 11118 states and 31403 transitions. [2022-03-03 17:21:24,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 17:21:24,320 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:24,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:24,337 INFO L225 Difference]: With dead ends: 11118 [2022-03-03 17:21:24,337 INFO L226 Difference]: Without dead ends: 11046 [2022-03-03 17:21:24,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=369, Invalid=1793, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 17:21:24,338 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 301 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:24,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 1233 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:21:24,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11046 states. [2022-03-03 17:21:24,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11046 to 9929. [2022-03-03 17:21:24,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9929 states, 9928 states have (on average 2.847904915390814) internal successors, (28274), 9928 states have internal predecessors, (28274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:24,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9929 states to 9929 states and 28274 transitions. [2022-03-03 17:21:24,579 INFO L78 Accepts]: Start accepts. Automaton has 9929 states and 28274 transitions. Word has length 67 [2022-03-03 17:21:24,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:24,579 INFO L470 AbstractCegarLoop]: Abstraction has 9929 states and 28274 transitions. [2022-03-03 17:21:24,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:24,580 INFO L276 IsEmpty]: Start isEmpty. Operand 9929 states and 28274 transitions. [2022-03-03 17:21:24,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:24,593 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:24,593 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:24,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-03-03 17:21:24,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:24,807 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:24,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:24,808 INFO L85 PathProgramCache]: Analyzing trace with hash -453711463, now seen corresponding path program 33 times [2022-03-03 17:21:24,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:24,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486454859] [2022-03-03 17:21:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:24,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:24,868 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:24,868 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:24,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486454859] [2022-03-03 17:21:24,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486454859] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:24,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597528024] [2022-03-03 17:21:24,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:21:24,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:24,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:24,870 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) [2022-03-03 17:21:24,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-03 17:21:24,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:21:24,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:24,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:24,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:25,085 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:25,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:25,190 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:21:25,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597528024] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:25,190 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:25,190 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:21:25,191 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205688104] [2022-03-03 17:21:25,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:25,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:25,191 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:25,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:25,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:25,191 INFO L87 Difference]: Start difference. First operand 9929 states and 28274 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:25,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:25,745 INFO L93 Difference]: Finished difference Result 12237 states and 34286 transitions. [2022-03-03 17:21:25,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 17:21:25,745 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:25,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:25,764 INFO L225 Difference]: With dead ends: 12237 [2022-03-03 17:21:25,765 INFO L226 Difference]: Without dead ends: 12162 [2022-03-03 17:21:25,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=545, Invalid=2317, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 17:21:25,765 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 516 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:25,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 1539 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:21:25,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12162 states. [2022-03-03 17:21:25,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12162 to 10357. [2022-03-03 17:21:25,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10357 states, 10356 states have (on average 2.8515836230204714) internal successors, (29531), 10356 states have internal predecessors, (29531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:25,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10357 states to 10357 states and 29531 transitions. [2022-03-03 17:21:25,933 INFO L78 Accepts]: Start accepts. Automaton has 10357 states and 29531 transitions. Word has length 67 [2022-03-03 17:21:25,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:25,933 INFO L470 AbstractCegarLoop]: Abstraction has 10357 states and 29531 transitions. [2022-03-03 17:21:25,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:25,933 INFO L276 IsEmpty]: Start isEmpty. Operand 10357 states and 29531 transitions. [2022-03-03 17:21:25,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:25,946 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:25,946 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:25,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:26,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:26,162 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:26,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:26,162 INFO L85 PathProgramCache]: Analyzing trace with hash 12067887, now seen corresponding path program 34 times [2022-03-03 17:21:26,162 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:26,162 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945792600] [2022-03-03 17:21:26,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:26,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:26,202 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:26,202 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:26,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945792600] [2022-03-03 17:21:26,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945792600] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:26,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396901280] [2022-03-03 17:21:26,202 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:21:26,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:26,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:26,203 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) [2022-03-03 17:21:26,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-03 17:21:26,274 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:21:26,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:26,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:26,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:26,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:26,568 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396901280] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:26,568 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:26,568 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:21:26,568 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633831699] [2022-03-03 17:21:26,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:26,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:26,568 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:26,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:26,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:26,569 INFO L87 Difference]: Start difference. First operand 10357 states and 29531 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:27,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:27,139 INFO L93 Difference]: Finished difference Result 11340 states and 32036 transitions. [2022-03-03 17:21:27,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 17:21:27,139 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:27,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:27,160 INFO L225 Difference]: With dead ends: 11340 [2022-03-03 17:21:27,160 INFO L226 Difference]: Without dead ends: 11292 [2022-03-03 17:21:27,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=440, Invalid=2110, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 17:21:27,161 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 417 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:27,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 1283 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:21:27,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11292 states. [2022-03-03 17:21:27,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11292 to 10057. [2022-03-03 17:21:27,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10057 states, 10056 states have (on average 2.8478520286396183) internal successors, (28638), 10056 states have internal predecessors, (28638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:27,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10057 states to 10057 states and 28638 transitions. [2022-03-03 17:21:27,352 INFO L78 Accepts]: Start accepts. Automaton has 10057 states and 28638 transitions. Word has length 67 [2022-03-03 17:21:27,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:27,352 INFO L470 AbstractCegarLoop]: Abstraction has 10057 states and 28638 transitions. [2022-03-03 17:21:27,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:27,353 INFO L276 IsEmpty]: Start isEmpty. Operand 10057 states and 28638 transitions. [2022-03-03 17:21:27,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:27,366 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:27,366 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:27,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-03-03 17:21:27,579 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,SelfDestructingSolverStorable45 [2022-03-03 17:21:27,579 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:27,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:27,580 INFO L85 PathProgramCache]: Analyzing trace with hash 2056489211, now seen corresponding path program 35 times [2022-03-03 17:21:27,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:27,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388125495] [2022-03-03 17:21:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:27,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:27,634 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:27,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388125495] [2022-03-03 17:21:27,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388125495] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:27,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578330474] [2022-03-03 17:21:27,634 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:21:27,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:27,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:27,635 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) [2022-03-03 17:21:27,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-03 17:21:27,695 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:21:27,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:27,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:27,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:27,832 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:27,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:27,954 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:21:27,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578330474] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:27,955 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:27,955 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:21:27,955 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755748576] [2022-03-03 17:21:27,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:27,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:27,955 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:27,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:27,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:27,956 INFO L87 Difference]: Start difference. First operand 10057 states and 28638 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:28,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:28,543 INFO L93 Difference]: Finished difference Result 13467 states and 37757 transitions. [2022-03-03 17:21:28,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-03 17:21:28,543 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:28,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:28,570 INFO L225 Difference]: With dead ends: 13467 [2022-03-03 17:21:28,570 INFO L226 Difference]: Without dead ends: 13407 [2022-03-03 17:21:28,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=660, Invalid=3000, Unknown=0, NotChecked=0, Total=3660 [2022-03-03 17:21:28,571 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 514 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:28,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [514 Valid, 1456 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:21:28,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13407 states. [2022-03-03 17:21:28,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13407 to 11301. [2022-03-03 17:21:28,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11301 states, 11300 states have (on average 2.846283185840708) internal successors, (32163), 11300 states have internal predecessors, (32163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:28,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11301 states to 11301 states and 32163 transitions. [2022-03-03 17:21:28,784 INFO L78 Accepts]: Start accepts. Automaton has 11301 states and 32163 transitions. Word has length 67 [2022-03-03 17:21:28,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:28,784 INFO L470 AbstractCegarLoop]: Abstraction has 11301 states and 32163 transitions. [2022-03-03 17:21:28,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:28,784 INFO L276 IsEmpty]: Start isEmpty. Operand 11301 states and 32163 transitions. [2022-03-03 17:21:28,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:28,798 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:28,798 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:28,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:29,011 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,SelfDestructingSolverStorable46 [2022-03-03 17:21:29,011 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:29,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:29,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1772698735, now seen corresponding path program 36 times [2022-03-03 17:21:29,012 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:29,012 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833573040] [2022-03-03 17:21:29,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:29,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:29,079 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:29,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833573040] [2022-03-03 17:21:29,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833573040] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:29,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612158906] [2022-03-03 17:21:29,079 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:21:29,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:29,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:29,080 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) [2022-03-03 17:21:29,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-03 17:21:29,149 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:21:29,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:29,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:29,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:29,291 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:29,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:29,373 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:29,373 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612158906] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:29,373 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:29,373 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:21:29,373 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987512385] [2022-03-03 17:21:29,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:29,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:29,374 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:29,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:29,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:29,374 INFO L87 Difference]: Start difference. First operand 11301 states and 32163 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:30,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:30,157 INFO L93 Difference]: Finished difference Result 13230 states and 37194 transitions. [2022-03-03 17:21:30,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-03 17:21:30,157 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:30,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:30,184 INFO L225 Difference]: With dead ends: 13230 [2022-03-03 17:21:30,184 INFO L226 Difference]: Without dead ends: 13182 [2022-03-03 17:21:30,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=530, Invalid=2892, Unknown=0, NotChecked=0, Total=3422 [2022-03-03 17:21:30,185 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 431 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:30,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 1504 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:21:30,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13182 states. [2022-03-03 17:21:30,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13182 to 10909. [2022-03-03 17:21:30,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10909 states, 10908 states have (on average 2.843142647598093) internal successors, (31013), 10908 states have internal predecessors, (31013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:30,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10909 states to 10909 states and 31013 transitions. [2022-03-03 17:21:30,431 INFO L78 Accepts]: Start accepts. Automaton has 10909 states and 31013 transitions. Word has length 67 [2022-03-03 17:21:30,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:30,431 INFO L470 AbstractCegarLoop]: Abstraction has 10909 states and 31013 transitions. [2022-03-03 17:21:30,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:30,431 INFO L276 IsEmpty]: Start isEmpty. Operand 10909 states and 31013 transitions. [2022-03-03 17:21:30,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:30,448 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:30,448 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:30,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:30,663 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,SelfDestructingSolverStorable47 [2022-03-03 17:21:30,664 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:30,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:30,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2070393455, now seen corresponding path program 37 times [2022-03-03 17:21:30,664 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:30,664 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035617417] [2022-03-03 17:21:30,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:30,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:30,732 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:30,733 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:30,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035617417] [2022-03-03 17:21:30,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035617417] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:30,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313523700] [2022-03-03 17:21:30,733 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:21:30,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:30,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:30,734 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) [2022-03-03 17:21:30,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-03 17:21:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:30,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:30,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:30,990 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:30,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:31,123 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:31,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313523700] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:31,123 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:31,123 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-03 17:21:31,123 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498758888] [2022-03-03 17:21:31,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:31,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:21:31,124 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:31,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:21:31,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:21:31,124 INFO L87 Difference]: Start difference. First operand 10909 states and 31013 transitions. Second operand has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:31,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:31,871 INFO L93 Difference]: Finished difference Result 12931 states and 36473 transitions. [2022-03-03 17:21:31,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 17:21:31,871 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:31,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:31,916 INFO L225 Difference]: With dead ends: 12931 [2022-03-03 17:21:31,916 INFO L226 Difference]: Without dead ends: 12859 [2022-03-03 17:21:31,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=556, Invalid=3226, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 17:21:31,933 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 399 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:31,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 1587 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:21:31,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12859 states. [2022-03-03 17:21:32,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12859 to 11213. [2022-03-03 17:21:32,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11213 states, 11212 states have (on average 2.8441848019978595) internal successors, (31889), 11212 states have internal predecessors, (31889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:32,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11213 states to 11213 states and 31889 transitions. [2022-03-03 17:21:32,133 INFO L78 Accepts]: Start accepts. Automaton has 11213 states and 31889 transitions. Word has length 67 [2022-03-03 17:21:32,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:32,134 INFO L470 AbstractCegarLoop]: Abstraction has 11213 states and 31889 transitions. [2022-03-03 17:21:32,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:32,134 INFO L276 IsEmpty]: Start isEmpty. Operand 11213 states and 31889 transitions. [2022-03-03 17:21:32,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:32,151 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:32,151 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:32,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-03-03 17:21:32,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:32,367 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:32,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:32,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1561534917, now seen corresponding path program 38 times [2022-03-03 17:21:32,367 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:32,367 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718394728] [2022-03-03 17:21:32,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:32,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:32,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:32,436 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:32,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718394728] [2022-03-03 17:21:32,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718394728] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:32,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597714004] [2022-03-03 17:21:32,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:21:32,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:32,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:32,438 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) [2022-03-03 17:21:32,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-03 17:21:32,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:21:32,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:32,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:32,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:32,710 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:32,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:32,835 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:21:32,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597714004] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:32,835 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:32,835 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:21:32,835 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958168558] [2022-03-03 17:21:32,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:32,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:32,836 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:32,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:32,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:32,836 INFO L87 Difference]: Start difference. First operand 11213 states and 31889 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:33,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:33,596 INFO L93 Difference]: Finished difference Result 14619 states and 40953 transitions. [2022-03-03 17:21:33,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 17:21:33,597 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:33,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:33,625 INFO L225 Difference]: With dead ends: 14619 [2022-03-03 17:21:33,625 INFO L226 Difference]: Without dead ends: 14559 [2022-03-03 17:21:33,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=693, Invalid=2729, Unknown=0, NotChecked=0, Total=3422 [2022-03-03 17:21:33,626 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 654 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:33,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [654 Valid, 1241 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:21:33,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14559 states. [2022-03-03 17:21:33,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14559 to 12169. [2022-03-03 17:21:33,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12169 states, 12168 states have (on average 2.8496055226824457) internal successors, (34674), 12168 states have internal predecessors, (34674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:33,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12169 states to 12169 states and 34674 transitions. [2022-03-03 17:21:33,854 INFO L78 Accepts]: Start accepts. Automaton has 12169 states and 34674 transitions. Word has length 67 [2022-03-03 17:21:33,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:33,854 INFO L470 AbstractCegarLoop]: Abstraction has 12169 states and 34674 transitions. [2022-03-03 17:21:33,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:33,855 INFO L276 IsEmpty]: Start isEmpty. Operand 12169 states and 34674 transitions. [2022-03-03 17:21:33,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:33,869 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:33,869 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:33,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-03-03 17:21:34,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-03-03 17:21:34,080 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:34,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:34,080 INFO L85 PathProgramCache]: Analyzing trace with hash 2027314267, now seen corresponding path program 39 times [2022-03-03 17:21:34,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:34,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510185669] [2022-03-03 17:21:34,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:34,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:34,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:34,134 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:34,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510185669] [2022-03-03 17:21:34,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510185669] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:34,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205994035] [2022-03-03 17:21:34,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:21:34,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:34,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:34,135 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) [2022-03-03 17:21:34,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-03 17:21:34,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:21:34,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:34,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:34,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:34,358 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:34,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:34,467 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:34,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205994035] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:34,468 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:34,468 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:21:34,468 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739982478] [2022-03-03 17:21:34,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:34,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:34,468 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:34,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:34,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:34,468 INFO L87 Difference]: Start difference. First operand 12169 states and 34674 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:34,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:34,919 INFO L93 Difference]: Finished difference Result 14342 states and 40301 transitions. [2022-03-03 17:21:34,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 17:21:34,919 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:34,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:34,958 INFO L225 Difference]: With dead ends: 14342 [2022-03-03 17:21:34,958 INFO L226 Difference]: Without dead ends: 14294 [2022-03-03 17:21:34,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=571, Invalid=2621, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:21:34,959 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 506 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:34,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 1143 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:21:34,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14294 states. [2022-03-03 17:21:35,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14294 to 11593. [2022-03-03 17:21:35,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11593 states, 11592 states have (on average 2.843512767425811) internal successors, (32962), 11592 states have internal predecessors, (32962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:35,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11593 states to 11593 states and 32962 transitions. [2022-03-03 17:21:35,150 INFO L78 Accepts]: Start accepts. Automaton has 11593 states and 32962 transitions. Word has length 67 [2022-03-03 17:21:35,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:35,150 INFO L470 AbstractCegarLoop]: Abstraction has 11593 states and 32962 transitions. [2022-03-03 17:21:35,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:35,151 INFO L276 IsEmpty]: Start isEmpty. Operand 11593 states and 32962 transitions. [2022-03-03 17:21:35,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:35,165 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:35,165 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:35,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:35,381 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,SelfDestructingSolverStorable50 [2022-03-03 17:21:35,381 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:35,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:35,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1729619547, now seen corresponding path program 40 times [2022-03-03 17:21:35,382 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:35,382 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090395784] [2022-03-03 17:21:35,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:35,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:35,423 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:35,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090395784] [2022-03-03 17:21:35,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090395784] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:35,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472939373] [2022-03-03 17:21:35,423 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:21:35,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:35,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:35,425 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) [2022-03-03 17:21:35,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-03 17:21:35,488 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:21:35,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:35,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:35,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:35,588 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:35,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:35,685 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:35,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472939373] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:35,685 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:35,685 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-03 17:21:35,685 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904431751] [2022-03-03 17:21:35,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:35,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:21:35,686 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:35,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:21:35,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:21:35,686 INFO L87 Difference]: Start difference. First operand 11593 states and 32962 transitions. Second operand has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:36,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:36,569 INFO L93 Difference]: Finished difference Result 14877 states and 41753 transitions. [2022-03-03 17:21:36,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-03 17:21:36,570 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:36,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:36,600 INFO L225 Difference]: With dead ends: 14877 [2022-03-03 17:21:36,600 INFO L226 Difference]: Without dead ends: 14805 [2022-03-03 17:21:36,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=760, Invalid=3932, Unknown=0, NotChecked=0, Total=4692 [2022-03-03 17:21:36,601 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 531 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:36,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 1513 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:21:36,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14805 states. [2022-03-03 17:21:36,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14805 to 8477. [2022-03-03 17:21:36,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8477 states, 8476 states have (on average 2.840608777725342) internal successors, (24077), 8476 states have internal predecessors, (24077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:36,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8477 states to 8477 states and 24077 transitions. [2022-03-03 17:21:36,832 INFO L78 Accepts]: Start accepts. Automaton has 8477 states and 24077 transitions. Word has length 67 [2022-03-03 17:21:36,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:36,832 INFO L470 AbstractCegarLoop]: Abstraction has 8477 states and 24077 transitions. [2022-03-03 17:21:36,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:36,832 INFO L276 IsEmpty]: Start isEmpty. Operand 8477 states and 24077 transitions. [2022-03-03 17:21:36,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:21:36,847 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:36,847 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:36,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:37,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:37,071 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:37,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:37,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1963059337, now seen corresponding path program 41 times [2022-03-03 17:21:37,071 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:37,071 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342100746] [2022-03-03 17:21:37,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:37,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:37,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:37,134 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:37,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342100746] [2022-03-03 17:21:37,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342100746] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:37,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266686846] [2022-03-03 17:21:37,134 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:21:37,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:37,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:37,136 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) [2022-03-03 17:21:37,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-03 17:21:37,198 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:21:37,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:37,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:37,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:37,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:37,397 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:37,398 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266686846] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:37,398 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:37,398 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-03 17:21:37,398 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392644915] [2022-03-03 17:21:37,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:37,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:21:37,398 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:37,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:21:37,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:21:37,399 INFO L87 Difference]: Start difference. First operand 8477 states and 24077 transitions. Second operand has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:37,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:37,643 INFO L93 Difference]: Finished difference Result 8826 states and 24881 transitions. [2022-03-03 17:21:37,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:21:37,643 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:21:37,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:37,656 INFO L225 Difference]: With dead ends: 8826 [2022-03-03 17:21:37,656 INFO L226 Difference]: Without dead ends: 8778 [2022-03-03 17:21:37,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=254, Invalid=1152, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:21:37,657 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 346 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:37,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 1275 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:21:37,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8778 states. [2022-03-03 17:21:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8778 to 8473. [2022-03-03 17:21:37,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8473 states, 8472 states have (on average 2.840651558073654) internal successors, (24066), 8472 states have internal predecessors, (24066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:37,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8473 states to 8473 states and 24066 transitions. [2022-03-03 17:21:37,771 INFO L78 Accepts]: Start accepts. Automaton has 8473 states and 24066 transitions. Word has length 67 [2022-03-03 17:21:37,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:37,771 INFO L470 AbstractCegarLoop]: Abstraction has 8473 states and 24066 transitions. [2022-03-03 17:21:37,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:37,771 INFO L276 IsEmpty]: Start isEmpty. Operand 8473 states and 24066 transitions. [2022-03-03 17:21:37,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-03 17:21:37,781 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:37,781 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2022-03-03 17:21:37,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:37,995 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,SelfDestructingSolverStorable52 [2022-03-03 17:21:37,995 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:37,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:37,996 INFO L85 PathProgramCache]: Analyzing trace with hash -932150795, now seen corresponding path program 42 times [2022-03-03 17:21:37,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:37,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193786292] [2022-03-03 17:21:37,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:37,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:38,057 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:21:38,057 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:38,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193786292] [2022-03-03 17:21:38,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193786292] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:38,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569104598] [2022-03-03 17:21:38,057 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:21:38,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:38,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:38,064 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) [2022-03-03 17:21:38,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-03 17:21:38,132 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:21:38,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:38,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 17:21:38,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:38,252 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:21:38,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:38,341 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:21:38,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569104598] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:38,342 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:38,342 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-03-03 17:21:38,342 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600290029] [2022-03-03 17:21:38,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:38,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 17:21:38,342 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:38,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 17:21:38,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:21:38,343 INFO L87 Difference]: Start difference. First operand 8473 states and 24066 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:38,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:38,449 INFO L93 Difference]: Finished difference Result 15310 states and 44184 transitions. [2022-03-03 17:21:38,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 17:21:38,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-03 17:21:38,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:38,478 INFO L225 Difference]: With dead ends: 15310 [2022-03-03 17:21:38,478 INFO L226 Difference]: Without dead ends: 15022 [2022-03-03 17:21:38,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 141 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-03 17:21:38,480 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 68 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 578 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 [2022-03-03 17:21:38,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 578 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:21:38,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15022 states. [2022-03-03 17:21:38,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15022 to 11818. [2022-03-03 17:21:38,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11818 states, 11817 states have (on average 2.88000338495388) internal successors, (34033), 11817 states have internal predecessors, (34033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:38,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11818 states to 11818 states and 34033 transitions. [2022-03-03 17:21:38,717 INFO L78 Accepts]: Start accepts. Automaton has 11818 states and 34033 transitions. Word has length 72 [2022-03-03 17:21:38,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:38,717 INFO L470 AbstractCegarLoop]: Abstraction has 11818 states and 34033 transitions. [2022-03-03 17:21:38,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:38,717 INFO L276 IsEmpty]: Start isEmpty. Operand 11818 states and 34033 transitions. [2022-03-03 17:21:38,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:21:38,732 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:38,732 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:21:38,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:38,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:38,948 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:38,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:38,948 INFO L85 PathProgramCache]: Analyzing trace with hash -2143276147, now seen corresponding path program 43 times [2022-03-03 17:21:38,949 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:38,949 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614362868] [2022-03-03 17:21:38,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:38,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:39,032 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:39,032 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:39,032 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614362868] [2022-03-03 17:21:39,032 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614362868] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:39,032 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847697345] [2022-03-03 17:21:39,032 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:21:39,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:39,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:39,033 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) [2022-03-03 17:21:39,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-03 17:21:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:39,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:21:39,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:39,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-03-03 17:21:39,438 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847697345] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:39,438 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:39,438 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 9] total 24 [2022-03-03 17:21:39,438 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836153665] [2022-03-03 17:21:39,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:39,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:21:39,438 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:39,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:21:39,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:21:39,439 INFO L87 Difference]: Start difference. First operand 11818 states and 34033 transitions. Second operand has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:41,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:41,095 INFO L93 Difference]: Finished difference Result 28511 states and 81078 transitions. [2022-03-03 17:21:41,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-03-03 17:21:41,095 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:21:41,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:41,154 INFO L225 Difference]: With dead ends: 28511 [2022-03-03 17:21:41,155 INFO L226 Difference]: Without dead ends: 28196 [2022-03-03 17:21:41,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5526 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2337, Invalid=11705, Unknown=0, NotChecked=0, Total=14042 [2022-03-03 17:21:41,157 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 992 mSDsluCounter, 2879 mSDsCounter, 0 mSdLazyCounter, 1471 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:41,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 2688 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1471 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:21:41,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28196 states. [2022-03-03 17:21:41,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28196 to 17561. [2022-03-03 17:21:41,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17561 states, 17560 states have (on average 2.8962984054669705) internal successors, (50859), 17560 states have internal predecessors, (50859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:41,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17561 states to 17561 states and 50859 transitions. [2022-03-03 17:21:41,707 INFO L78 Accepts]: Start accepts. Automaton has 17561 states and 50859 transitions. Word has length 77 [2022-03-03 17:21:41,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:41,707 INFO L470 AbstractCegarLoop]: Abstraction has 17561 states and 50859 transitions. [2022-03-03 17:21:41,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:41,708 INFO L276 IsEmpty]: Start isEmpty. Operand 17561 states and 50859 transitions. [2022-03-03 17:21:41,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:21:41,729 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:41,729 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:21:41,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:41,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:41,945 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:41,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:41,945 INFO L85 PathProgramCache]: Analyzing trace with hash -2013945907, now seen corresponding path program 44 times [2022-03-03 17:21:41,945 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:41,946 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404704469] [2022-03-03 17:21:41,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:41,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:42,042 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:42,042 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:42,042 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404704469] [2022-03-03 17:21:42,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404704469] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:42,042 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19453278] [2022-03-03 17:21:42,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:21:42,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:42,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:42,044 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) [2022-03-03 17:21:42,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-03 17:21:42,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:21:42,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:42,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:21:42,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:42,361 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:42,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:42,473 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 17:21:42,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19453278] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:42,474 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:42,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10] total 25 [2022-03-03 17:21:42,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51437811] [2022-03-03 17:21:42,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:42,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:21:42,474 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:42,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:21:42,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:21:42,475 INFO L87 Difference]: Start difference. First operand 17561 states and 50859 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:45,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:45,191 INFO L93 Difference]: Finished difference Result 50708 states and 145022 transitions. [2022-03-03 17:21:45,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-03-03 17:21:45,191 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:21:45,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:45,320 INFO L225 Difference]: With dead ends: 50708 [2022-03-03 17:21:45,320 INFO L226 Difference]: Without dead ends: 50348 [2022-03-03 17:21:45,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12624 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4987, Invalid=24769, Unknown=0, NotChecked=0, Total=29756 [2022-03-03 17:21:45,324 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 1151 mSDsluCounter, 3178 mSDsCounter, 0 mSdLazyCounter, 1628 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 2967 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:45,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1151 Valid, 2967 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1628 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:21:45,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50348 states. [2022-03-03 17:21:46,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50348 to 24277. [2022-03-03 17:21:46,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24277 states, 24276 states have (on average 2.902619871478003) internal successors, (70464), 24276 states have internal predecessors, (70464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:46,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24277 states to 24277 states and 70464 transitions. [2022-03-03 17:21:46,094 INFO L78 Accepts]: Start accepts. Automaton has 24277 states and 70464 transitions. Word has length 77 [2022-03-03 17:21:46,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:46,094 INFO L470 AbstractCegarLoop]: Abstraction has 24277 states and 70464 transitions. [2022-03-03 17:21:46,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:46,094 INFO L276 IsEmpty]: Start isEmpty. Operand 24277 states and 70464 transitions. [2022-03-03 17:21:46,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:21:46,128 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:46,129 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:21:46,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:46,336 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,SelfDestructingSolverStorable55 [2022-03-03 17:21:46,336 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:46,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:46,337 INFO L85 PathProgramCache]: Analyzing trace with hash 407986989, now seen corresponding path program 45 times [2022-03-03 17:21:46,337 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:46,337 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808562661] [2022-03-03 17:21:46,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:46,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:46,443 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:21:46,443 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:46,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808562661] [2022-03-03 17:21:46,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808562661] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:46,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093282033] [2022-03-03 17:21:46,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:21:46,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:46,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:46,460 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) [2022-03-03 17:21:46,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-03 17:21:46,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:21:46,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:46,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:21:46,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:46,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:46,923 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-03 17:21:46,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093282033] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:46,923 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:46,923 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 25 [2022-03-03 17:21:46,923 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510448033] [2022-03-03 17:21:46,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:46,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:21:46,924 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:46,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:21:46,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:21:46,925 INFO L87 Difference]: Start difference. First operand 24277 states and 70464 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:49,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:49,013 INFO L93 Difference]: Finished difference Result 45069 states and 129453 transitions. [2022-03-03 17:21:49,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-03-03 17:21:49,013 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:21:49,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:49,104 INFO L225 Difference]: With dead ends: 45069 [2022-03-03 17:21:49,104 INFO L226 Difference]: Without dead ends: 45009 [2022-03-03 17:21:49,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9226 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3987, Invalid=18663, Unknown=0, NotChecked=0, Total=22650 [2022-03-03 17:21:49,107 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 1082 mSDsluCounter, 2273 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:49,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 2149 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:21:49,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45009 states. [2022-03-03 17:21:49,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45009 to 28437. [2022-03-03 17:21:49,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28437 states, 28436 states have (on average 2.914333942889295) internal successors, (82872), 28436 states have internal predecessors, (82872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:49,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28437 states to 28437 states and 82872 transitions. [2022-03-03 17:21:49,934 INFO L78 Accepts]: Start accepts. Automaton has 28437 states and 82872 transitions. Word has length 77 [2022-03-03 17:21:49,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:49,934 INFO L470 AbstractCegarLoop]: Abstraction has 28437 states and 82872 transitions. [2022-03-03 17:21:49,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:49,935 INFO L276 IsEmpty]: Start isEmpty. Operand 28437 states and 82872 transitions. [2022-03-03 17:21:49,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:21:49,976 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:49,976 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:21:49,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:50,192 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,SelfDestructingSolverStorable56 [2022-03-03 17:21:50,192 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:50,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:50,192 INFO L85 PathProgramCache]: Analyzing trace with hash 873766339, now seen corresponding path program 46 times [2022-03-03 17:21:50,192 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:50,192 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408205835] [2022-03-03 17:21:50,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:50,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:50,267 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:21:50,267 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:50,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408205835] [2022-03-03 17:21:50,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408205835] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:50,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338753379] [2022-03-03 17:21:50,268 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:21:50,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:50,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:50,285 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) [2022-03-03 17:21:50,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-03 17:21:50,387 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:21:50,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:50,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:21:50,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:50,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:50,648 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-03 17:21:50,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338753379] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:50,648 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:50,648 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 25 [2022-03-03 17:21:50,648 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591742418] [2022-03-03 17:21:50,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:50,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:21:50,649 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:50,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:21:50,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:21:50,649 INFO L87 Difference]: Start difference. First operand 28437 states and 82872 transitions. Second operand has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:52,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:52,201 INFO L93 Difference]: Finished difference Result 42790 states and 122925 transitions. [2022-03-03 17:21:52,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-03-03 17:21:52,201 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:21:52,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:52,301 INFO L225 Difference]: With dead ends: 42790 [2022-03-03 17:21:52,302 INFO L226 Difference]: Without dead ends: 42718 [2022-03-03 17:21:52,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5144 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2056, Invalid=11986, Unknown=0, NotChecked=0, Total=14042 [2022-03-03 17:21:52,308 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 846 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 1953 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:52,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 1953 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:21:52,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42718 states. [2022-03-03 17:21:52,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42718 to 22217. [2022-03-03 17:21:52,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22217 states, 22216 states have (on average 2.9081292761973354) internal successors, (64607), 22216 states have internal predecessors, (64607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:52,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22217 states to 22217 states and 64607 transitions. [2022-03-03 17:21:52,995 INFO L78 Accepts]: Start accepts. Automaton has 22217 states and 64607 transitions. Word has length 77 [2022-03-03 17:21:52,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:52,995 INFO L470 AbstractCegarLoop]: Abstraction has 22217 states and 64607 transitions. [2022-03-03 17:21:52,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:52,995 INFO L276 IsEmpty]: Start isEmpty. Operand 22217 states and 64607 transitions. [2022-03-03 17:21:53,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:21:53,029 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:53,029 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:21:53,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:53,247 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,SelfDestructingSolverStorable57 [2022-03-03 17:21:53,247 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:53,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:53,248 INFO L85 PathProgramCache]: Analyzing trace with hash 576071619, now seen corresponding path program 47 times [2022-03-03 17:21:53,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:53,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748459087] [2022-03-03 17:21:53,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:53,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:53,331 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:53,332 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:53,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748459087] [2022-03-03 17:21:53,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748459087] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:53,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961192550] [2022-03-03 17:21:53,332 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:21:53,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:53,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:53,333 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) [2022-03-03 17:21:53,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-03 17:21:53,403 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:21:53,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:53,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:21:53,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:53,762 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:53,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:53,877 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 17:21:53,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961192550] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:53,878 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:53,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 26 [2022-03-03 17:21:53,878 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667344090] [2022-03-03 17:21:53,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:53,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-03 17:21:53,878 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:53,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-03 17:21:53,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2022-03-03 17:21:53,879 INFO L87 Difference]: Start difference. First operand 22217 states and 64607 transitions. Second operand has 26 states, 26 states have (on average 4.5) internal successors, (117), 26 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:55,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:55,083 INFO L93 Difference]: Finished difference Result 32563 states and 93461 transitions. [2022-03-03 17:21:55,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-03-03 17:21:55,083 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.5) internal successors, (117), 26 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:21:55,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:55,149 INFO L225 Difference]: With dead ends: 32563 [2022-03-03 17:21:55,149 INFO L226 Difference]: Without dead ends: 32479 [2022-03-03 17:21:55,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4112 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1613, Invalid=9943, Unknown=0, NotChecked=0, Total=11556 [2022-03-03 17:21:55,151 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 680 mSDsluCounter, 2523 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:55,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 2395 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:21:55,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32479 states. [2022-03-03 17:21:55,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32479 to 21561. [2022-03-03 17:21:55,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21561 states, 21560 states have (on average 2.9099721706864563) internal successors, (62739), 21560 states have internal predecessors, (62739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:55,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21561 states to 21561 states and 62739 transitions. [2022-03-03 17:21:55,739 INFO L78 Accepts]: Start accepts. Automaton has 21561 states and 62739 transitions. Word has length 77 [2022-03-03 17:21:55,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:55,739 INFO L470 AbstractCegarLoop]: Abstraction has 21561 states and 62739 transitions. [2022-03-03 17:21:55,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.5) internal successors, (117), 26 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:55,739 INFO L276 IsEmpty]: Start isEmpty. Operand 21561 states and 62739 transitions. [2022-03-03 17:21:55,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:21:55,769 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:55,769 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:21:55,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:55,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:55,985 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:55,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:55,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1921884175, now seen corresponding path program 48 times [2022-03-03 17:21:55,986 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:55,986 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785989894] [2022-03-03 17:21:55,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:55,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:56,065 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:21:56,065 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:56,065 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785989894] [2022-03-03 17:21:56,065 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785989894] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:56,065 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920600240] [2022-03-03 17:21:56,065 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:21:56,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:56,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:56,067 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:56,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-03 17:21:56,139 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:21:56,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:56,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:21:56,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:56,429 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:56,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:56,559 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-03 17:21:56,559 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920600240] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:56,559 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:56,559 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 25 [2022-03-03 17:21:56,559 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753860142] [2022-03-03 17:21:56,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:56,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:21:56,559 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:56,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:21:56,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:21:56,560 INFO L87 Difference]: Start difference. First operand 21561 states and 62739 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:58,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:58,834 INFO L93 Difference]: Finished difference Result 62616 states and 180846 transitions. [2022-03-03 17:21:58,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-03-03 17:21:58,834 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:21:58,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:58,992 INFO L225 Difference]: With dead ends: 62616 [2022-03-03 17:21:58,993 INFO L226 Difference]: Without dead ends: 62421 [2022-03-03 17:21:58,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11591 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=4718, Invalid=22342, Unknown=0, NotChecked=0, Total=27060 [2022-03-03 17:21:58,994 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 1391 mSDsluCounter, 2191 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:58,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1391 Valid, 2053 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:21:59,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62421 states. [2022-03-03 17:21:59,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62421 to 34189. [2022-03-03 17:21:59,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34189 states, 34188 states have (on average 2.9289224289224287) internal successors, (100134), 34188 states have internal predecessors, (100134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:59,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34189 states to 34189 states and 100134 transitions. [2022-03-03 17:21:59,992 INFO L78 Accepts]: Start accepts. Automaton has 34189 states and 100134 transitions. Word has length 77 [2022-03-03 17:21:59,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:59,992 INFO L470 AbstractCegarLoop]: Abstraction has 34189 states and 100134 transitions. [2022-03-03 17:21:59,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:59,992 INFO L276 IsEmpty]: Start isEmpty. Operand 34189 states and 100134 transitions. [2022-03-03 17:22:00,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:22:00,047 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:22:00,047 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:22:00,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-03-03 17:22:00,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-03-03 17:22:00,263 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:22:00,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:22:00,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1907303771, now seen corresponding path program 49 times [2022-03-03 17:22:00,264 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:22:00,264 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504260602] [2022-03-03 17:22:00,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:22:00,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:22:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:22:00,341 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:22:00,342 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:22:00,342 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504260602] [2022-03-03 17:22:00,342 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504260602] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:22:00,342 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136748747] [2022-03-03 17:22:00,342 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:22:00,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:22:00,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:22:00,343 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:22:00,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-03 17:22:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:22:00,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:22:00,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:22:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:00,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:22:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-03 17:22:00,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136748747] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:22:00,766 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:22:00,766 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 25 [2022-03-03 17:22:00,766 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808686662] [2022-03-03 17:22:00,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:22:00,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:22:00,766 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:22:00,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:22:00,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:22:00,767 INFO L87 Difference]: Start difference. First operand 34189 states and 100134 transitions. Second operand has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:03,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:22:03,117 INFO L93 Difference]: Finished difference Result 52418 states and 151701 transitions. [2022-03-03 17:22:03,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-03-03 17:22:03,117 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:22:03,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:22:03,351 INFO L225 Difference]: With dead ends: 52418 [2022-03-03 17:22:03,351 INFO L226 Difference]: Without dead ends: 52346 [2022-03-03 17:22:03,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7497 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2747, Invalid=16159, Unknown=0, NotChecked=0, Total=18906 [2022-03-03 17:22:03,352 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 932 mSDsluCounter, 2453 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:22:03,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [932 Valid, 2293 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:22:03,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52346 states. [2022-03-03 17:22:03,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52346 to 32901. [2022-03-03 17:22:04,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32901 states, 32900 states have (on average 2.9253495440729482) internal successors, (96244), 32900 states have internal predecessors, (96244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:04,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32901 states to 32901 states and 96244 transitions. [2022-03-03 17:22:04,195 INFO L78 Accepts]: Start accepts. Automaton has 32901 states and 96244 transitions. Word has length 77 [2022-03-03 17:22:04,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:22:04,195 INFO L470 AbstractCegarLoop]: Abstraction has 32901 states and 96244 transitions. [2022-03-03 17:22:04,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:04,195 INFO L276 IsEmpty]: Start isEmpty. Operand 32901 states and 96244 transitions. [2022-03-03 17:22:04,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:22:04,248 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:22:04,248 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:22:04,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-03-03 17:22:04,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:22:04,456 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:22:04,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:22:04,456 INFO L85 PathProgramCache]: Analyzing trace with hash 305202183, now seen corresponding path program 50 times [2022-03-03 17:22:04,456 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:22:04,456 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869885996] [2022-03-03 17:22:04,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:22:04,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:22:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:22:04,669 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:04,669 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:22:04,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869885996] [2022-03-03 17:22:04,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869885996] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:22:04,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305824027] [2022-03-03 17:22:04,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:22:04,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:22:04,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:22:04,671 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:22:04,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-03 17:22:04,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:22:04,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:22:04,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:22:04,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:22:04,984 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:04,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:22:05,113 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:22:05,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305824027] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:22:05,114 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:22:05,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 27 [2022-03-03 17:22:05,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509637845] [2022-03-03 17:22:05,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:22:05,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 17:22:05,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:22:05,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 17:22:05,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2022-03-03 17:22:05,115 INFO L87 Difference]: Start difference. First operand 32901 states and 96244 transitions. Second operand has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:06,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:22:06,918 INFO L93 Difference]: Finished difference Result 59882 states and 174146 transitions. [2022-03-03 17:22:06,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-03-03 17:22:06,918 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:22:06,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:22:07,061 INFO L225 Difference]: With dead ends: 59882 [2022-03-03 17:22:07,061 INFO L226 Difference]: Without dead ends: 59762 [2022-03-03 17:22:07,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8127 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2690, Invalid=17902, Unknown=0, NotChecked=0, Total=20592 [2022-03-03 17:22:07,064 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 934 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:22:07,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [934 Valid, 2435 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:22:07,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59762 states. [2022-03-03 17:22:07,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59762 to 29121. [2022-03-03 17:22:07,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29121 states, 29120 states have (on average 2.9258585164835167) internal successors, (85201), 29120 states have internal predecessors, (85201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:07,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29121 states to 29121 states and 85201 transitions. [2022-03-03 17:22:07,925 INFO L78 Accepts]: Start accepts. Automaton has 29121 states and 85201 transitions. Word has length 77 [2022-03-03 17:22:07,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:22:07,925 INFO L470 AbstractCegarLoop]: Abstraction has 29121 states and 85201 transitions. [2022-03-03 17:22:07,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:07,925 INFO L276 IsEmpty]: Start isEmpty. Operand 29121 states and 85201 transitions. [2022-03-03 17:22:07,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:22:07,970 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:22:07,970 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:22:07,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-03 17:22:08,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:22:08,184 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:22:08,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:22:08,184 INFO L85 PathProgramCache]: Analyzing trace with hash -189752111, now seen corresponding path program 51 times [2022-03-03 17:22:08,184 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:22:08,184 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612730752] [2022-03-03 17:22:08,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:22:08,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:22:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:22:08,260 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:08,261 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:22:08,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612730752] [2022-03-03 17:22:08,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612730752] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:22:08,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195456708] [2022-03-03 17:22:08,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:22:08,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:22:08,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:22:08,268 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:22:08,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-03 17:22:08,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:22:08,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:22:08,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:22:08,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:22:08,543 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:08,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:22:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:22:08,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195456708] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:22:08,619 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:22:08,619 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 27 [2022-03-03 17:22:08,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915394165] [2022-03-03 17:22:08,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:22:08,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 17:22:08,619 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:22:08,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 17:22:08,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2022-03-03 17:22:08,620 INFO L87 Difference]: Start difference. First operand 29121 states and 85201 transitions. Second operand has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:10,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:22:10,963 INFO L93 Difference]: Finished difference Result 68515 states and 199472 transitions. [2022-03-03 17:22:10,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-03-03 17:22:10,964 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:22:10,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:22:11,123 INFO L225 Difference]: With dead ends: 68515 [2022-03-03 17:22:11,123 INFO L226 Difference]: Without dead ends: 68395 [2022-03-03 17:22:11,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9170 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3362, Invalid=19288, Unknown=0, NotChecked=0, Total=22650 [2022-03-03 17:22:11,125 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 1302 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:22:11,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1302 Valid, 2192 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:22:11,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68395 states. [2022-03-03 17:22:12,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68395 to 40169. [2022-03-03 17:22:12,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40169 states, 40168 states have (on average 2.9553624775941048) internal successors, (118711), 40168 states have internal predecessors, (118711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:12,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40169 states to 40169 states and 118711 transitions. [2022-03-03 17:22:12,359 INFO L78 Accepts]: Start accepts. Automaton has 40169 states and 118711 transitions. Word has length 77 [2022-03-03 17:22:12,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:22:12,359 INFO L470 AbstractCegarLoop]: Abstraction has 40169 states and 118711 transitions. [2022-03-03 17:22:12,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:12,359 INFO L276 IsEmpty]: Start isEmpty. Operand 40169 states and 118711 transitions. [2022-03-03 17:22:12,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:22:12,416 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:22:12,417 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:22:12,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-03 17:22:12,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-03-03 17:22:12,632 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:22:12,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:22:12,633 INFO L85 PathProgramCache]: Analyzing trace with hash 43687679, now seen corresponding path program 52 times [2022-03-03 17:22:12,633 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:22:12,633 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479560308] [2022-03-03 17:22:12,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:22:12,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:22:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:22:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:12,868 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:22:12,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479560308] [2022-03-03 17:22:12,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479560308] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:22:12,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066440335] [2022-03-03 17:22:12,868 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:22:12,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:22:12,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:22:12,869 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:22:12,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-03 17:22:12,946 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:22:12,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:22:12,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:22:12,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:22:13,199 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:13,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:22:13,329 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:22:13,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066440335] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:22:13,329 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:22:13,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 27 [2022-03-03 17:22:13,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218959784] [2022-03-03 17:22:13,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:22:13,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 17:22:13,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:22:13,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 17:22:13,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2022-03-03 17:22:13,330 INFO L87 Difference]: Start difference. First operand 40169 states and 118711 transitions. Second operand has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:14,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:22:14,589 INFO L93 Difference]: Finished difference Result 49044 states and 143220 transitions. [2022-03-03 17:22:14,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-03 17:22:14,590 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:22:14,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:22:14,711 INFO L225 Difference]: With dead ends: 49044 [2022-03-03 17:22:14,712 INFO L226 Difference]: Without dead ends: 48948 [2022-03-03 17:22:14,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2974 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1296, Invalid=7260, Unknown=0, NotChecked=0, Total=8556 [2022-03-03 17:22:14,712 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 808 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:22:14,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 2164 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:22:14,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48948 states. [2022-03-03 17:22:15,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48948 to 43461. [2022-03-03 17:22:15,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43461 states, 43460 states have (on average 2.9549010584445465) internal successors, (128420), 43460 states have internal predecessors, (128420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:15,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43461 states to 43461 states and 128420 transitions. [2022-03-03 17:22:15,786 INFO L78 Accepts]: Start accepts. Automaton has 43461 states and 128420 transitions. Word has length 77 [2022-03-03 17:22:15,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:22:15,786 INFO L470 AbstractCegarLoop]: Abstraction has 43461 states and 128420 transitions. [2022-03-03 17:22:15,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:15,786 INFO L276 IsEmpty]: Start isEmpty. Operand 43461 states and 128420 transitions. [2022-03-03 17:22:15,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:22:15,860 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:22:15,861 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:22:15,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-03-03 17:22:16,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:22:16,075 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:22:16,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:22:16,076 INFO L85 PathProgramCache]: Analyzing trace with hash -15926743, now seen corresponding path program 53 times [2022-03-03 17:22:16,076 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:22:16,076 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299832739] [2022-03-03 17:22:16,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:22:16,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:22:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:22:16,176 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:16,177 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:22:16,177 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299832739] [2022-03-03 17:22:16,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299832739] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:22:16,177 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541758369] [2022-03-03 17:22:16,177 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:22:16,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:22:16,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:22:16,184 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:22:16,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-03 17:22:16,288 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:22:16,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:22:16,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:22:16,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:22:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:16,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:22:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 17:22:16,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541758369] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:22:16,913 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:22:16,913 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 26 [2022-03-03 17:22:16,913 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18167222] [2022-03-03 17:22:16,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:22:16,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-03 17:22:16,914 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:22:16,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-03 17:22:16,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2022-03-03 17:22:16,915 INFO L87 Difference]: Start difference. First operand 43461 states and 128420 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:20,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:22:20,082 INFO L93 Difference]: Finished difference Result 67512 states and 196403 transitions. [2022-03-03 17:22:20,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-03-03 17:22:20,082 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:22:20,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:22:20,250 INFO L225 Difference]: With dead ends: 67512 [2022-03-03 17:22:20,250 INFO L226 Difference]: Without dead ends: 67152 [2022-03-03 17:22:20,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9167 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3648, Invalid=19002, Unknown=0, NotChecked=0, Total=22650 [2022-03-03 17:22:20,252 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 893 mSDsluCounter, 3393 mSDsCounter, 0 mSdLazyCounter, 1893 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:22:20,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [893 Valid, 3157 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1893 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:22:20,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67152 states. [2022-03-03 17:22:21,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67152 to 42309. [2022-03-03 17:22:21,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42309 states, 42308 states have (on average 2.9459203933062303) internal successors, (124636), 42308 states have internal predecessors, (124636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:21,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42309 states to 42309 states and 124636 transitions. [2022-03-03 17:22:21,618 INFO L78 Accepts]: Start accepts. Automaton has 42309 states and 124636 transitions. Word has length 77 [2022-03-03 17:22:21,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:22:21,618 INFO L470 AbstractCegarLoop]: Abstraction has 42309 states and 124636 transitions. [2022-03-03 17:22:21,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:21,619 INFO L276 IsEmpty]: Start isEmpty. Operand 42309 states and 124636 transitions. [2022-03-03 17:22:21,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:22:21,687 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:22:21,687 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:22:21,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-03 17:22:21,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-03-03 17:22:21,892 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:22:21,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:22:21,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1862558545, now seen corresponding path program 54 times [2022-03-03 17:22:21,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:22:21,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884862213] [2022-03-03 17:22:21,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:22:21,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:22:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:22:21,980 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:21,981 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:22:21,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884862213] [2022-03-03 17:22:21,981 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884862213] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:22:21,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920046295] [2022-03-03 17:22:21,981 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:22:21,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:22:21,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:22:21,982 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:22:21,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-03 17:22:22,060 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:22:22,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:22:22,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:22:22,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:22:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:22,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:22:22,407 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 17:22:22,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920046295] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:22:22,407 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:22:22,407 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 26 [2022-03-03 17:22:22,407 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170552708] [2022-03-03 17:22:22,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:22:22,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-03 17:22:22,407 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:22:22,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-03 17:22:22,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2022-03-03 17:22:22,408 INFO L87 Difference]: Start difference. First operand 42309 states and 124636 transitions. Second operand has 26 states, 26 states have (on average 4.384615384615385) internal successors, (114), 26 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:25,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:22:25,410 INFO L93 Difference]: Finished difference Result 81273 states and 236179 transitions. [2022-03-03 17:22:25,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-03-03 17:22:25,410 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.384615384615385) internal successors, (114), 26 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:22:25,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:22:25,625 INFO L225 Difference]: With dead ends: 81273 [2022-03-03 17:22:25,625 INFO L226 Difference]: Without dead ends: 80973 [2022-03-03 17:22:25,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10846 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4184, Invalid=22876, Unknown=0, NotChecked=0, Total=27060 [2022-03-03 17:22:25,626 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 1098 mSDsluCounter, 3638 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 3449 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:22:25,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1098 Valid, 3449 Invalid, 2056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:22:25,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80973 states. [2022-03-03 17:22:26,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80973 to 50781. [2022-03-03 17:22:27,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50781 states, 50780 states have (on average 2.952382827884994) internal successors, (149922), 50780 states have internal predecessors, (149922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:27,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50781 states to 50781 states and 149922 transitions. [2022-03-03 17:22:27,369 INFO L78 Accepts]: Start accepts. Automaton has 50781 states and 149922 transitions. Word has length 77 [2022-03-03 17:22:27,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:22:27,369 INFO L470 AbstractCegarLoop]: Abstraction has 50781 states and 149922 transitions. [2022-03-03 17:22:27,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.384615384615385) internal successors, (114), 26 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:27,370 INFO L276 IsEmpty]: Start isEmpty. Operand 50781 states and 149922 transitions. [2022-03-03 17:22:27,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:22:27,493 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:22:27,493 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:22:27,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-03 17:22:27,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-03-03 17:22:27,711 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:22:27,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:22:27,711 INFO L85 PathProgramCache]: Analyzing trace with hash -2092365519, now seen corresponding path program 55 times [2022-03-03 17:22:27,711 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:22:27,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709956324] [2022-03-03 17:22:27,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:22:27,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:22:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:22:27,775 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:22:27,775 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:22:27,775 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709956324] [2022-03-03 17:22:27,775 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709956324] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:22:27,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231914243] [2022-03-03 17:22:27,776 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:22:27,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:22:27,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:22:27,777 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:22:27,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-03 17:22:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:22:27,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:22:27,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:22:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:28,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:22:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 17:22:28,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231914243] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:22:28,095 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:22:28,095 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 25 [2022-03-03 17:22:28,095 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528987991] [2022-03-03 17:22:28,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:22:28,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:22:28,096 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:22:28,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:22:28,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:22:28,096 INFO L87 Difference]: Start difference. First operand 50781 states and 149922 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:30,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:22:30,857 INFO L93 Difference]: Finished difference Result 116411 states and 340067 transitions. [2022-03-03 17:22:30,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2022-03-03 17:22:30,858 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:22:30,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:22:31,357 INFO L225 Difference]: With dead ends: 116411 [2022-03-03 17:22:31,358 INFO L226 Difference]: Without dead ends: 116231 [2022-03-03 17:22:31,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13242 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4854, Invalid=27726, Unknown=0, NotChecked=0, Total=32580 [2022-03-03 17:22:31,362 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 1135 mSDsluCounter, 2300 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:22:31,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1135 Valid, 2201 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:22:31,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116231 states. [2022-03-03 17:22:33,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116231 to 62961. [2022-03-03 17:22:33,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62961 states, 62960 states have (on average 2.9530654383735704) internal successors, (185925), 62960 states have internal predecessors, (185925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:33,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62961 states to 62961 states and 185925 transitions. [2022-03-03 17:22:33,584 INFO L78 Accepts]: Start accepts. Automaton has 62961 states and 185925 transitions. Word has length 77 [2022-03-03 17:22:33,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:22:33,584 INFO L470 AbstractCegarLoop]: Abstraction has 62961 states and 185925 transitions. [2022-03-03 17:22:33,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:33,584 INFO L276 IsEmpty]: Start isEmpty. Operand 62961 states and 185925 transitions. [2022-03-03 17:22:33,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:22:33,920 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:22:33,920 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:22:33,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-03-03 17:22:34,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:22:34,128 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:22:34,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:22:34,129 INFO L85 PathProgramCache]: Analyzing trace with hash 324405281, now seen corresponding path program 56 times [2022-03-03 17:22:34,130 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:22:34,130 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169729196] [2022-03-03 17:22:34,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:22:34,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:22:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:22:34,227 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:34,228 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:22:34,228 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169729196] [2022-03-03 17:22:34,228 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169729196] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:22:34,228 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411837534] [2022-03-03 17:22:34,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:22:34,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:22:34,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:22:34,229 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:22:34,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-03 17:22:34,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:22:34,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:22:34,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:22:34,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:22:34,561 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:34,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:22:34,692 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:22:34,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411837534] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:22:34,692 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:22:34,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 27 [2022-03-03 17:22:34,692 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359911206] [2022-03-03 17:22:34,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:22:34,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 17:22:34,693 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:22:34,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 17:22:34,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2022-03-03 17:22:34,693 INFO L87 Difference]: Start difference. First operand 62961 states and 185925 transitions. Second operand has 27 states, 27 states have (on average 4.333333333333333) internal successors, (117), 27 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:36,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:22:36,468 INFO L93 Difference]: Finished difference Result 108080 states and 318427 transitions. [2022-03-03 17:22:36,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-03-03 17:22:36,469 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.333333333333333) internal successors, (117), 27 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:22:36,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:22:36,944 INFO L225 Difference]: With dead ends: 108080 [2022-03-03 17:22:36,944 INFO L226 Difference]: Without dead ends: 107972 [2022-03-03 17:22:36,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2735 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1182, Invalid=7190, Unknown=0, NotChecked=0, Total=8372 [2022-03-03 17:22:36,945 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 916 mSDsluCounter, 2082 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:22:36,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 1964 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:22:37,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107972 states. [2022-03-03 17:22:39,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107972 to 91801. [2022-03-03 17:22:39,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91801 states, 91800 states have (on average 2.9727995642701526) internal successors, (272903), 91800 states have internal predecessors, (272903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:39,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91801 states to 91801 states and 272903 transitions. [2022-03-03 17:22:39,495 INFO L78 Accepts]: Start accepts. Automaton has 91801 states and 272903 transitions. Word has length 77 [2022-03-03 17:22:39,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:22:39,495 INFO L470 AbstractCegarLoop]: Abstraction has 91801 states and 272903 transitions. [2022-03-03 17:22:39,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.333333333333333) internal successors, (117), 27 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:39,495 INFO L276 IsEmpty]: Start isEmpty. Operand 91801 states and 272903 transitions. [2022-03-03 17:22:39,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:22:39,983 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:22:39,987 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:22:40,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-03-03 17:22:40,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:22:40,216 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:22:40,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:22:40,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1543677713, now seen corresponding path program 57 times [2022-03-03 17:22:40,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:22:40,216 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816009550] [2022-03-03 17:22:40,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:22:40,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:22:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:22:40,308 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:40,308 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:22:40,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816009550] [2022-03-03 17:22:40,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816009550] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:22:40,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472404648] [2022-03-03 17:22:40,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:22:40,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:22:40,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:22:40,311 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:22:40,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-03 17:22:40,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:22:40,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:22:40,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:22:40,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:22:40,673 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:40,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:22:40,790 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:22:40,791 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472404648] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:22:40,791 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:22:40,791 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 26 [2022-03-03 17:22:40,791 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541339199] [2022-03-03 17:22:40,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:22:40,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-03 17:22:40,791 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:22:40,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-03 17:22:40,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2022-03-03 17:22:40,792 INFO L87 Difference]: Start difference. First operand 91801 states and 272903 transitions. Second operand has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:43,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:22:43,990 INFO L93 Difference]: Finished difference Result 139731 states and 410454 transitions. [2022-03-03 17:22:43,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-03-03 17:22:43,990 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:22:43,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:22:44,420 INFO L225 Difference]: With dead ends: 139731 [2022-03-03 17:22:44,421 INFO L226 Difference]: Without dead ends: 139446 [2022-03-03 17:22:44,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14023 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=5085, Invalid=27135, Unknown=0, NotChecked=0, Total=32220 [2022-03-03 17:22:44,422 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 1214 mSDsluCounter, 3705 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 3514 SdHoareTripleChecker+Invalid, 2175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:22:44,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1214 Valid, 3514 Invalid, 2175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:22:44,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139446 states. [2022-03-03 17:22:47,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139446 to 93029. [2022-03-03 17:22:47,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93029 states, 93028 states have (on average 2.971707442920411) internal successors, (276452), 93028 states have internal predecessors, (276452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:47,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93029 states to 93029 states and 276452 transitions. [2022-03-03 17:22:47,453 INFO L78 Accepts]: Start accepts. Automaton has 93029 states and 276452 transitions. Word has length 77 [2022-03-03 17:22:47,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:22:47,453 INFO L470 AbstractCegarLoop]: Abstraction has 93029 states and 276452 transitions. [2022-03-03 17:22:47,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:47,454 INFO L276 IsEmpty]: Start isEmpty. Operand 93029 states and 276452 transitions. [2022-03-03 17:22:47,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:22:47,609 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:22:47,609 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:22:47,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-03-03 17:22:47,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:22:47,825 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:22:47,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:22:47,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1396411191, now seen corresponding path program 58 times [2022-03-03 17:22:47,826 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:22:47,826 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657595497] [2022-03-03 17:22:47,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:22:47,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:22:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:22:47,923 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:47,923 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:22:47,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657595497] [2022-03-03 17:22:47,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657595497] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:22:47,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77812887] [2022-03-03 17:22:47,923 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:22:47,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:22:47,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:22:47,925 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:22:47,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-03 17:22:48,391 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:22:48,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:22:48,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:22:48,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:22:48,539 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:48,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:22:48,614 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:48,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77812887] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:22:48,614 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:22:48,614 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 27 [2022-03-03 17:22:48,614 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215595969] [2022-03-03 17:22:48,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:22:48,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 17:22:48,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:22:48,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 17:22:48,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2022-03-03 17:22:48,615 INFO L87 Difference]: Start difference. First operand 93029 states and 276452 transitions. Second operand has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:51,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:22:51,591 INFO L93 Difference]: Finished difference Result 177380 states and 520777 transitions. [2022-03-03 17:22:51,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-03-03 17:22:51,596 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:22:51,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:22:52,210 INFO L225 Difference]: With dead ends: 177380 [2022-03-03 17:22:52,210 INFO L226 Difference]: Without dead ends: 177320 [2022-03-03 17:22:52,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9648 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=4214, Invalid=20592, Unknown=0, NotChecked=0, Total=24806 [2022-03-03 17:22:52,211 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 766 mSDsluCounter, 2840 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:22:52,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 2715 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:22:52,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177320 states. [2022-03-03 17:22:55,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177320 to 120037. [2022-03-03 17:22:55,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120037 states, 120036 states have (on average 2.961344929854377) internal successors, (355468), 120036 states have internal predecessors, (355468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:56,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120037 states to 120037 states and 355468 transitions. [2022-03-03 17:22:56,138 INFO L78 Accepts]: Start accepts. Automaton has 120037 states and 355468 transitions. Word has length 77 [2022-03-03 17:22:56,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:22:56,138 INFO L470 AbstractCegarLoop]: Abstraction has 120037 states and 355468 transitions. [2022-03-03 17:22:56,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:56,138 INFO L276 IsEmpty]: Start isEmpty. Operand 120037 states and 355468 transitions. [2022-03-03 17:22:56,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:22:56,380 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:22:56,380 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:22:56,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-03-03 17:22:56,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-03-03 17:22:56,599 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:22:56,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:22:56,941 INFO L85 PathProgramCache]: Analyzing trace with hash 158341105, now seen corresponding path program 59 times [2022-03-03 17:22:56,941 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:22:56,941 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271672431] [2022-03-03 17:22:56,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:22:56,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:22:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:22:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:22:57,024 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:22:57,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271672431] [2022-03-03 17:22:57,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271672431] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:22:57,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256981935] [2022-03-03 17:22:57,025 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:22:57,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:22:57,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:22:57,040 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:22:57,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-03 17:22:57,147 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:22:57,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:22:57,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:22:57,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:22:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:57,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:22:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 17:22:57,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256981935] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:22:57,355 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:22:57,355 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 26 [2022-03-03 17:22:57,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555695181] [2022-03-03 17:22:57,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:22:57,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-03 17:22:57,355 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:22:57,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-03 17:22:57,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2022-03-03 17:22:57,356 INFO L87 Difference]: Start difference. First operand 120037 states and 355468 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:23:00,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:23:00,572 INFO L93 Difference]: Finished difference Result 168996 states and 495587 transitions. [2022-03-03 17:23:00,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-03-03 17:23:00,572 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:23:00,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:23:01,079 INFO L225 Difference]: With dead ends: 168996 [2022-03-03 17:23:01,079 INFO L226 Difference]: Without dead ends: 168831 [2022-03-03 17:23:01,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11501 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4065, Invalid=23657, Unknown=0, NotChecked=0, Total=27722 [2022-03-03 17:23:01,087 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 1219 mSDsluCounter, 2979 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:23:01,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1219 Valid, 2818 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:23:01,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168831 states. [2022-03-03 17:23:03,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168831 to 78493. [2022-03-03 17:23:04,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78493 states, 78492 states have (on average 2.9483514243489783) internal successors, (231422), 78492 states have internal predecessors, (231422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:23:04,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78493 states to 78493 states and 231422 transitions. [2022-03-03 17:23:04,625 INFO L78 Accepts]: Start accepts. Automaton has 78493 states and 231422 transitions. Word has length 77 [2022-03-03 17:23:04,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:23:04,625 INFO L470 AbstractCegarLoop]: Abstraction has 78493 states and 231422 transitions. [2022-03-03 17:23:04,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:23:04,626 INFO L276 IsEmpty]: Start isEmpty. Operand 78493 states and 231422 transitions. [2022-03-03 17:23:04,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:23:04,757 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:23:04,757 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:23:04,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-03-03 17:23:04,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2022-03-03 17:23:04,973 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:23:04,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:23:04,973 INFO L85 PathProgramCache]: Analyzing trace with hash 375939123, now seen corresponding path program 60 times [2022-03-03 17:23:04,974 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:23:04,974 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255859594] [2022-03-03 17:23:04,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:23:04,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:23:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:23:05,048 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:23:05,048 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:23:05,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255859594] [2022-03-03 17:23:05,048 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255859594] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:23:05,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708710334] [2022-03-03 17:23:05,048 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:23:05,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:23:05,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:23:05,049 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:23:05,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-03 17:23:05,134 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:23:05,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:23:05,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:23:05,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:23:05,305 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:23:05,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:23:05,401 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:23:05,401 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708710334] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:23:05,401 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:23:05,401 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 26 [2022-03-03 17:23:05,401 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854947497] [2022-03-03 17:23:05,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:23:05,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-03 17:23:05,402 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:23:05,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-03 17:23:05,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2022-03-03 17:23:05,402 INFO L87 Difference]: Start difference. First operand 78493 states and 231422 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:23:08,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:23:08,680 INFO L93 Difference]: Finished difference Result 158506 states and 463091 transitions. [2022-03-03 17:23:08,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-03-03 17:23:08,681 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:23:08,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:23:09,231 INFO L225 Difference]: With dead ends: 158506 [2022-03-03 17:23:09,231 INFO L226 Difference]: Without dead ends: 158371 [2022-03-03 17:23:09,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10521 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3784, Invalid=21976, Unknown=0, NotChecked=0, Total=25760 [2022-03-03 17:23:09,232 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 1192 mSDsluCounter, 2963 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:23:09,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1192 Valid, 2802 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:23:09,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158371 states. [2022-03-03 17:23:12,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158371 to 96705. [2022-03-03 17:23:12,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96705 states, 96704 states have (on average 2.9457830079417606) internal successors, (284869), 96704 states have internal predecessors, (284869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:23:12,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96705 states to 96705 states and 284869 transitions. [2022-03-03 17:23:12,667 INFO L78 Accepts]: Start accepts. Automaton has 96705 states and 284869 transitions. Word has length 77 [2022-03-03 17:23:12,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:23:12,668 INFO L470 AbstractCegarLoop]: Abstraction has 96705 states and 284869 transitions. [2022-03-03 17:23:12,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:23:12,668 INFO L276 IsEmpty]: Start isEmpty. Operand 96705 states and 284869 transitions. [2022-03-03 17:23:13,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:23:13,168 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:23:13,169 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:23:13,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-03-03 17:23:13,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:23:13,369 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:23:13,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:23:13,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1606859835, now seen corresponding path program 61 times [2022-03-03 17:23:13,370 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:23:13,370 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711988115] [2022-03-03 17:23:13,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:23:13,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:23:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:23:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:23:13,449 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:23:13,449 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711988115] [2022-03-03 17:23:13,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711988115] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:23:13,449 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888884418] [2022-03-03 17:23:13,449 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:23:13,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:23:13,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:23:13,451 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:23:13,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-03 17:23:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:23:13,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:23:13,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:23:13,752 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:23:13,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:23:13,871 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 17:23:13,871 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888884418] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:23:13,871 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:23:13,872 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 26 [2022-03-03 17:23:13,872 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984923975] [2022-03-03 17:23:13,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:23:13,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-03 17:23:13,872 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:23:13,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-03 17:23:13,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-03-03 17:23:13,872 INFO L87 Difference]: Start difference. First operand 96705 states and 284869 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:23:16,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:23:16,834 INFO L93 Difference]: Finished difference Result 145587 states and 426382 transitions. [2022-03-03 17:23:16,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-03-03 17:23:16,835 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:23:16,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:23:17,498 INFO L225 Difference]: With dead ends: 145587 [2022-03-03 17:23:17,498 INFO L226 Difference]: Without dead ends: 145407 [2022-03-03 17:23:17,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8562 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3400, Invalid=17192, Unknown=0, NotChecked=0, Total=20592 [2022-03-03 17:23:17,499 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 1314 mSDsluCounter, 2471 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:23:17,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 2405 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:23:17,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145407 states. [2022-03-03 17:23:20,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145407 to 116905. [2022-03-03 17:23:21,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116905 states, 116904 states have (on average 2.9534917539177443) internal successors, (345275), 116904 states have internal predecessors, (345275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:23:22,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116905 states to 116905 states and 345275 transitions. [2022-03-03 17:23:22,249 INFO L78 Accepts]: Start accepts. Automaton has 116905 states and 345275 transitions. Word has length 77 [2022-03-03 17:23:22,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:23:22,249 INFO L470 AbstractCegarLoop]: Abstraction has 116905 states and 345275 transitions. [2022-03-03 17:23:22,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:23:22,249 INFO L276 IsEmpty]: Start isEmpty. Operand 116905 states and 345275 transitions. [2022-03-03 17:23:22,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:23:22,538 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:23:22,538 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:23:22,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-03-03 17:23:22,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:23:22,739 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:23:22,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:23:22,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1736190075, now seen corresponding path program 62 times [2022-03-03 17:23:22,740 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:23:22,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53928915] [2022-03-03 17:23:22,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:23:22,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:23:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:23:22,808 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:23:22,808 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:23:22,808 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53928915] [2022-03-03 17:23:22,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53928915] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:23:22,808 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057906027] [2022-03-03 17:23:22,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:23:22,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:23:22,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:23:22,809 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:23:22,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-03 17:23:22,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:23:22,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:23:22,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:23:22,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:23:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:23:23,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:23:23,238 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 17:23:23,239 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057906027] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:23:23,239 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:23:23,239 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 26 [2022-03-03 17:23:23,239 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339016855] [2022-03-03 17:23:23,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:23:23,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-03 17:23:23,240 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:23:23,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-03 17:23:23,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2022-03-03 17:23:23,240 INFO L87 Difference]: Start difference. First operand 116905 states and 345275 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:23:26,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:23:26,394 INFO L93 Difference]: Finished difference Result 214479 states and 628934 transitions. [2022-03-03 17:23:26,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-03-03 17:23:26,394 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:23:26,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:23:27,430 INFO L225 Difference]: With dead ends: 214479 [2022-03-03 17:23:27,431 INFO L226 Difference]: Without dead ends: 214374 [2022-03-03 17:23:27,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9705 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3948, Invalid=19308, Unknown=0, NotChecked=0, Total=23256 [2022-03-03 17:23:27,431 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 1702 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:23:27,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1702 Valid, 1633 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:23:27,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214374 states. [2022-03-03 17:23:31,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214374 to 144181. [2022-03-03 17:23:31,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144181 states, 144180 states have (on average 2.9559439589402134) internal successors, (426188), 144180 states have internal predecessors, (426188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:23:33,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144181 states to 144181 states and 426188 transitions. [2022-03-03 17:23:33,012 INFO L78 Accepts]: Start accepts. Automaton has 144181 states and 426188 transitions. Word has length 77 [2022-03-03 17:23:33,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:23:33,012 INFO L470 AbstractCegarLoop]: Abstraction has 144181 states and 426188 transitions. [2022-03-03 17:23:33,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:23:33,012 INFO L276 IsEmpty]: Start isEmpty. Operand 144181 states and 426188 transitions. [2022-03-03 17:23:33,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:23:33,308 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:23:33,308 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:23:33,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-03-03 17:23:33,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:23:33,524 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:23:33,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:23:33,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2092997871, now seen corresponding path program 63 times [2022-03-03 17:23:33,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:23:33,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794047794] [2022-03-03 17:23:33,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:23:33,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:23:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:23:33,656 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:23:33,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:23:33,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794047794] [2022-03-03 17:23:33,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794047794] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:23:33,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467511120] [2022-03-03 17:23:33,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:23:33,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:23:33,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:23:33,657 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:23:33,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-03 17:23:33,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:23:33,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:23:33,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:23:33,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:23:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:23:34,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:23:34,161 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-03 17:23:34,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467511120] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:23:34,161 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:23:34,161 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 26 [2022-03-03 17:23:34,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642078332] [2022-03-03 17:23:34,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:23:34,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-03 17:23:34,162 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:23:34,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-03 17:23:34,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2022-03-03 17:23:34,162 INFO L87 Difference]: Start difference. First operand 144181 states and 426188 transitions. Second operand has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:23:37,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:23:37,021 INFO L93 Difference]: Finished difference Result 196221 states and 575779 transitions. [2022-03-03 17:23:37,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-03-03 17:23:37,021 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:23:37,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:23:37,929 INFO L225 Difference]: With dead ends: 196221 [2022-03-03 17:23:37,930 INFO L226 Difference]: Without dead ends: 196125 [2022-03-03 17:23:37,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5555 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2224, Invalid=12296, Unknown=0, NotChecked=0, Total=14520 [2022-03-03 17:23:37,930 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 1255 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:23:37,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1255 Valid, 1538 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:23:38,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196125 states. [2022-03-03 17:23:42,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196125 to 144181. [2022-03-03 17:23:42,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144181 states, 144180 states have (on average 2.9556110417533636) internal successors, (426140), 144180 states have internal predecessors, (426140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:23:43,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144181 states to 144181 states and 426140 transitions. [2022-03-03 17:23:43,521 INFO L78 Accepts]: Start accepts. Automaton has 144181 states and 426140 transitions. Word has length 77 [2022-03-03 17:23:43,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:23:43,521 INFO L470 AbstractCegarLoop]: Abstraction has 144181 states and 426140 transitions. [2022-03-03 17:23:43,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:23:43,521 INFO L276 IsEmpty]: Start isEmpty. Operand 144181 states and 426140 transitions. [2022-03-03 17:23:43,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:23:43,765 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:23:43,765 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:23:43,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-03-03 17:23:43,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:23:43,981 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:23:43,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:23:43,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1553588417, now seen corresponding path program 64 times [2022-03-03 17:23:43,982 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:23:43,982 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981933316] [2022-03-03 17:23:43,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:23:43,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:23:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:23:44,054 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:23:44,054 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:23:44,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981933316] [2022-03-03 17:23:44,054 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981933316] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:23:44,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594148453] [2022-03-03 17:23:44,054 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:23:44,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:23:44,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:23:44,055 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:23:44,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-03 17:23:44,152 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:23:44,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:23:44,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:23:44,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:23:44,388 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:23:44,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:23:44,504 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-03 17:23:44,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594148453] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:23:44,505 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:23:44,505 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 26 [2022-03-03 17:23:44,505 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665854826] [2022-03-03 17:23:44,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:23:44,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-03 17:23:44,505 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:23:44,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-03 17:23:44,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2022-03-03 17:23:44,506 INFO L87 Difference]: Start difference. First operand 144181 states and 426140 transitions. Second operand has 26 states, 26 states have (on average 4.346153846153846) internal successors, (113), 26 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:23:48,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:23:48,973 INFO L93 Difference]: Finished difference Result 313363 states and 924522 transitions. [2022-03-03 17:23:48,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-03-03 17:23:48,973 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.346153846153846) internal successors, (113), 26 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:23:48,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:23:50,331 INFO L225 Difference]: With dead ends: 313363 [2022-03-03 17:23:50,331 INFO L226 Difference]: Without dead ends: 313228 [2022-03-03 17:23:50,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8701 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3574, Invalid=17306, Unknown=0, NotChecked=0, Total=20880 [2022-03-03 17:23:50,333 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 1364 mSDsluCounter, 2534 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:23:50,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1364 Valid, 2436 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:23:51,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313228 states. [2022-03-03 17:23:58,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313228 to 205189. [2022-03-03 17:23:58,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205189 states, 205188 states have (on average 2.9693159444022066) internal successors, (609268), 205188 states have internal predecessors, (609268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:23:59,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205189 states to 205189 states and 609268 transitions. [2022-03-03 17:23:59,651 INFO L78 Accepts]: Start accepts. Automaton has 205189 states and 609268 transitions. Word has length 77 [2022-03-03 17:23:59,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:23:59,651 INFO L470 AbstractCegarLoop]: Abstraction has 205189 states and 609268 transitions. [2022-03-03 17:23:59,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.346153846153846) internal successors, (113), 26 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:23:59,651 INFO L276 IsEmpty]: Start isEmpty. Operand 205189 states and 609268 transitions. [2022-03-03 17:24:00,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:24:00,446 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:24:00,446 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:24:00,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-03-03 17:24:00,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-03-03 17:24:00,663 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:24:00,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:24:00,663 INFO L85 PathProgramCache]: Analyzing trace with hash 310417253, now seen corresponding path program 65 times [2022-03-03 17:24:00,663 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:24:00,663 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628487825] [2022-03-03 17:24:00,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:24:00,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:24:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:24:00,759 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:24:00,759 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:24:00,759 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628487825] [2022-03-03 17:24:00,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628487825] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:24:00,759 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299678142] [2022-03-03 17:24:00,759 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:24:00,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:24:00,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:24:00,760 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:24:00,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-03 17:24:00,846 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 17:24:00,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:24:00,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:24:00,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:24:01,062 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:24:01,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:24:01,160 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-03 17:24:01,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299678142] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:24:01,161 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:24:01,161 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 22 [2022-03-03 17:24:01,161 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387562165] [2022-03-03 17:24:01,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:24:01,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:24:01,161 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:24:01,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:24:01,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:24:01,162 INFO L87 Difference]: Start difference. First operand 205189 states and 609268 transitions. Second operand has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 22 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:24:04,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:24:04,497 INFO L93 Difference]: Finished difference Result 240508 states and 710608 transitions. [2022-03-03 17:24:04,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-03-03 17:24:04,497 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 22 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:24:04,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:24:05,680 INFO L225 Difference]: With dead ends: 240508 [2022-03-03 17:24:05,680 INFO L226 Difference]: Without dead ends: 240253 [2022-03-03 17:24:05,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9223 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3745, Invalid=18605, Unknown=0, NotChecked=0, Total=22350 [2022-03-03 17:24:05,683 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 1426 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:24:05,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1426 Valid, 2121 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:24:05,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240253 states. [2022-03-03 17:24:11,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240253 to 208877. [2022-03-03 17:24:11,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208877 states, 208876 states have (on average 2.968296980026427) internal successors, (620006), 208876 states have internal predecessors, (620006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:24:13,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208877 states to 208877 states and 620006 transitions. [2022-03-03 17:24:13,070 INFO L78 Accepts]: Start accepts. Automaton has 208877 states and 620006 transitions. Word has length 77 [2022-03-03 17:24:13,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:24:13,070 INFO L470 AbstractCegarLoop]: Abstraction has 208877 states and 620006 transitions. [2022-03-03 17:24:13,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 22 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:24:13,071 INFO L276 IsEmpty]: Start isEmpty. Operand 208877 states and 620006 transitions. [2022-03-03 17:24:13,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:24:13,837 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:24:13,837 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:24:13,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-03-03 17:24:14,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:24:14,051 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:24:14,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:24:14,052 INFO L85 PathProgramCache]: Analyzing trace with hash 776196603, now seen corresponding path program 66 times [2022-03-03 17:24:14,052 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:24:14,052 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182654525] [2022-03-03 17:24:14,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:24:14,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:24:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:24:14,133 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:24:14,133 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:24:14,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182654525] [2022-03-03 17:24:14,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182654525] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:24:14,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708382155] [2022-03-03 17:24:14,133 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:24:14,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:24:14,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:24:14,148 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:24:14,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-03 17:24:14,245 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 17:24:14,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:24:14,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:24:14,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:24:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:24:14,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:24:14,634 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-03 17:24:14,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708382155] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:24:14,634 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:24:14,634 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 22 [2022-03-03 17:24:14,634 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545824656] [2022-03-03 17:24:14,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:24:14,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:24:14,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:24:14,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:24:14,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:24:14,635 INFO L87 Difference]: Start difference. First operand 208877 states and 620006 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:24:17,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:24:17,532 INFO L93 Difference]: Finished difference Result 227793 states and 673967 transitions. [2022-03-03 17:24:17,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-03-03 17:24:17,532 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:24:17,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:24:18,551 INFO L225 Difference]: With dead ends: 227793 [2022-03-03 17:24:18,551 INFO L226 Difference]: Without dead ends: 227745 [2022-03-03 17:24:18,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4149 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1783, Invalid=9559, Unknown=0, NotChecked=0, Total=11342 [2022-03-03 17:24:18,552 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 1060 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:24:18,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1060 Valid, 2048 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:24:19,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227745 states. [2022-03-03 17:24:26,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227745 to 208877. [2022-03-03 17:24:26,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208877 states, 208876 states have (on average 2.9682586797908805) internal successors, (619998), 208876 states have internal predecessors, (619998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:24:27,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208877 states to 208877 states and 619998 transitions. [2022-03-03 17:24:27,668 INFO L78 Accepts]: Start accepts. Automaton has 208877 states and 619998 transitions. Word has length 77 [2022-03-03 17:24:27,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:24:27,668 INFO L470 AbstractCegarLoop]: Abstraction has 208877 states and 619998 transitions. [2022-03-03 17:24:27,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:24:27,668 INFO L276 IsEmpty]: Start isEmpty. Operand 208877 states and 619998 transitions. [2022-03-03 17:24:28,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:24:28,066 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:24:28,066 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:24:28,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-03-03 17:24:28,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-03-03 17:24:28,279 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:24:28,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:24:28,280 INFO L85 PathProgramCache]: Analyzing trace with hash 439747493, now seen corresponding path program 67 times [2022-03-03 17:24:28,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:24:28,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329437275] [2022-03-03 17:24:28,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:24:28,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:24:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:24:28,371 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:24:28,371 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:24:28,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329437275] [2022-03-03 17:24:28,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329437275] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:24:28,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924826466] [2022-03-03 17:24:28,371 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:24:28,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:24:28,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:24:28,372 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:24:28,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-03 17:24:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:24:28,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:24:28,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:24:28,688 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:24:28,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:24:28,803 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:24:28,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924826466] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:24:28,803 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:24:28,803 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 23 [2022-03-03 17:24:28,803 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692879722] [2022-03-03 17:24:28,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:24:28,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:24:28,803 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:24:28,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:24:28,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:24:28,804 INFO L87 Difference]: Start difference. First operand 208877 states and 619998 transitions. Second operand has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:24:33,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:24:33,055 INFO L93 Difference]: Finished difference Result 283353 states and 838038 transitions. [2022-03-03 17:24:33,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-03-03 17:24:33,055 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:24:33,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:24:34,721 INFO L225 Difference]: With dead ends: 283353 [2022-03-03 17:24:34,722 INFO L226 Difference]: Without dead ends: 283173 [2022-03-03 17:24:34,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12236 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4532, Invalid=24538, Unknown=0, NotChecked=0, Total=29070 [2022-03-03 17:24:34,723 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 1655 mSDsluCounter, 2434 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 2329 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:24:34,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1655 Valid, 2329 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:24:35,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283173 states. [2022-03-03 17:24:41,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283173 to 211217. [2022-03-03 17:24:41,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211217 states, 211216 states have (on average 2.9682457768350883) internal successors, (626941), 211216 states have internal predecessors, (626941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:24:43,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211217 states to 211217 states and 626941 transitions. [2022-03-03 17:24:43,113 INFO L78 Accepts]: Start accepts. Automaton has 211217 states and 626941 transitions. Word has length 77 [2022-03-03 17:24:43,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:24:43,113 INFO L470 AbstractCegarLoop]: Abstraction has 211217 states and 626941 transitions. [2022-03-03 17:24:43,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:24:43,113 INFO L276 IsEmpty]: Start isEmpty. Operand 211217 states and 626941 transitions. [2022-03-03 17:24:43,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:24:43,782 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:24:43,782 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:24:43,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-03-03 17:24:43,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-03-03 17:24:43,987 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:24:43,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:24:43,988 INFO L85 PathProgramCache]: Analyzing trace with hash 905526843, now seen corresponding path program 68 times [2022-03-03 17:24:43,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:24:43,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049175990] [2022-03-03 17:24:43,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:24:43,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:24:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:24:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:24:44,074 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:24:44,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049175990] [2022-03-03 17:24:44,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049175990] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:24:44,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381854285] [2022-03-03 17:24:44,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:24:44,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:24:44,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:24:44,092 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:24:44,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-03 17:24:44,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:24:44,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:24:44,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:24:44,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:24:44,406 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:24:44,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:24:44,511 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 17:24:44,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381854285] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:24:44,511 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:24:44,511 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 23 [2022-03-03 17:24:44,511 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175330506] [2022-03-03 17:24:44,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:24:44,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:24:44,512 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:24:44,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:24:44,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:24:44,512 INFO L87 Difference]: Start difference. First operand 211217 states and 626941 transitions. Second operand has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:24:48,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:24:48,243 INFO L93 Difference]: Finished difference Result 260965 states and 773185 transitions. [2022-03-03 17:24:48,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-03-03 17:24:48,244 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:24:48,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:24:49,917 INFO L225 Difference]: With dead ends: 260965 [2022-03-03 17:24:49,917 INFO L226 Difference]: Without dead ends: 260917 [2022-03-03 17:24:49,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6831 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2447, Invalid=15109, Unknown=0, NotChecked=0, Total=17556 [2022-03-03 17:24:49,943 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 1152 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 2414 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:24:49,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1152 Valid, 2414 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:24:50,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260917 states. [2022-03-03 17:24:56,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260917 to 207265. [2022-03-03 17:24:57,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207265 states, 207264 states have (on average 2.9690105372857802) internal successors, (615369), 207264 states have internal predecessors, (615369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:24:58,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207265 states to 207265 states and 615369 transitions. [2022-03-03 17:24:58,039 INFO L78 Accepts]: Start accepts. Automaton has 207265 states and 615369 transitions. Word has length 77 [2022-03-03 17:24:58,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:24:58,039 INFO L470 AbstractCegarLoop]: Abstraction has 207265 states and 615369 transitions. [2022-03-03 17:24:58,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:24:58,039 INFO L276 IsEmpty]: Start isEmpty. Operand 207265 states and 615369 transitions. [2022-03-03 17:24:59,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:24:59,058 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:24:59,059 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:24:59,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-03-03 17:24:59,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-03-03 17:24:59,278 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:24:59,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:24:59,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1345019129, now seen corresponding path program 69 times [2022-03-03 17:24:59,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:24:59,279 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814070151] [2022-03-03 17:24:59,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:24:59,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:24:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:24:59,380 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:24:59,380 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:24:59,380 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814070151] [2022-03-03 17:24:59,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814070151] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:24:59,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628287156] [2022-03-03 17:24:59,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:24:59,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:24:59,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:24:59,382 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:24:59,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-03 17:24:59,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 17:24:59,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:24:59,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:24:59,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:24:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:24:59,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:24:59,836 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:24:59,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628287156] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:24:59,836 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:24:59,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 24 [2022-03-03 17:24:59,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726069940] [2022-03-03 17:24:59,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:24:59,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:24:59,837 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:24:59,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:24:59,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:24:59,837 INFO L87 Difference]: Start difference. First operand 207265 states and 615369 transitions. Second operand has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:25:04,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:25:04,389 INFO L93 Difference]: Finished difference Result 272676 states and 804937 transitions. [2022-03-03 17:25:04,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-03-03 17:25:04,407 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:25:04,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:25:05,832 INFO L225 Difference]: With dead ends: 272676 [2022-03-03 17:25:05,833 INFO L226 Difference]: Without dead ends: 272616 [2022-03-03 17:25:05,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10940 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4398, Invalid=22334, Unknown=0, NotChecked=0, Total=26732 [2022-03-03 17:25:05,834 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 1402 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 2836 SdHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:25:05,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1402 Valid, 2836 Invalid, 2012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1842 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:25:06,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272616 states. [2022-03-03 17:25:12,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272616 to 209001. [2022-03-03 17:25:12,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209001 states, 209000 states have (on average 2.968913875598086) internal successors, (620503), 209000 states have internal predecessors, (620503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:25:14,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209001 states to 209001 states and 620503 transitions. [2022-03-03 17:25:14,121 INFO L78 Accepts]: Start accepts. Automaton has 209001 states and 620503 transitions. Word has length 77 [2022-03-03 17:25:14,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:25:14,122 INFO L470 AbstractCegarLoop]: Abstraction has 209001 states and 620503 transitions. [2022-03-03 17:25:14,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:25:14,122 INFO L276 IsEmpty]: Start isEmpty. Operand 209001 states and 620503 transitions. [2022-03-03 17:25:14,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:25:14,956 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:25:14,956 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:25:14,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-03-03 17:25:15,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:25:15,173 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:25:15,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:25:15,173 INFO L85 PathProgramCache]: Analyzing trace with hash -879239779, now seen corresponding path program 70 times [2022-03-03 17:25:15,173 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:25:15,173 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763956348] [2022-03-03 17:25:15,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:25:15,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:25:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:25:15,237 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:25:15,238 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:25:15,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763956348] [2022-03-03 17:25:15,238 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763956348] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:25:15,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175586515] [2022-03-03 17:25:15,238 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:25:15,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:25:15,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:25:15,239 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:25:15,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-03 17:25:15,327 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:25:15,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:25:15,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:25:15,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:25:15,499 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:25:15,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:25:15,602 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:25:15,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175586515] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:25:15,603 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:25:15,603 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 24 [2022-03-03 17:25:15,603 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030607238] [2022-03-03 17:25:15,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:25:15,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:25:15,603 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:25:15,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:25:15,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:25:15,603 INFO L87 Difference]: Start difference. First operand 209001 states and 620503 transitions. Second operand has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:25:18,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:25:18,800 INFO L93 Difference]: Finished difference Result 257541 states and 761466 transitions. [2022-03-03 17:25:18,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-03-03 17:25:18,801 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:25:18,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:25:20,084 INFO L225 Difference]: With dead ends: 257541 [2022-03-03 17:25:20,085 INFO L226 Difference]: Without dead ends: 257493 [2022-03-03 17:25:20,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5693 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2303, Invalid=13197, Unknown=0, NotChecked=0, Total=15500 [2022-03-03 17:25:20,085 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 1041 mSDsluCounter, 2778 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 2614 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:25:20,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 2614 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:25:20,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257493 states. [2022-03-03 17:25:26,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257493 to 206589. [2022-03-03 17:25:26,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206589 states, 206588 states have (on average 2.969281855674095) internal successors, (613418), 206588 states have internal predecessors, (613418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:25:27,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206589 states to 206589 states and 613418 transitions. [2022-03-03 17:25:27,779 INFO L78 Accepts]: Start accepts. Automaton has 206589 states and 613418 transitions. Word has length 77 [2022-03-03 17:25:27,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:25:27,779 INFO L470 AbstractCegarLoop]: Abstraction has 206589 states and 613418 transitions. [2022-03-03 17:25:27,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:25:27,779 INFO L276 IsEmpty]: Start isEmpty. Operand 206589 states and 613418 transitions. [2022-03-03 17:25:28,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:25:28,134 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:25:28,134 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:25:28,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-03-03 17:25:28,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:25:28,339 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:25:28,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:25:28,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1176934499, now seen corresponding path program 71 times [2022-03-03 17:25:28,340 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:25:28,340 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262979323] [2022-03-03 17:25:28,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:25:28,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:25:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:25:28,417 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:25:28,417 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:25:28,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262979323] [2022-03-03 17:25:28,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262979323] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:25:28,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100645569] [2022-03-03 17:25:28,417 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:25:28,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:25:28,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:25:28,418 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:25:28,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-03 17:25:28,503 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 17:25:28,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:25:28,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:25:28,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:25:28,725 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:25:28,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:25:28,839 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:25:28,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100645569] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:25:28,840 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:25:28,840 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-03-03 17:25:28,840 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463458575] [2022-03-03 17:25:28,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:25:28,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:25:28,840 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:25:28,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:25:28,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:25:28,840 INFO L87 Difference]: Start difference. First operand 206589 states and 613418 transitions. Second operand has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:25:32,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:25:32,129 INFO L93 Difference]: Finished difference Result 258351 states and 767554 transitions. [2022-03-03 17:25:32,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-03 17:25:32,130 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:25:32,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:25:33,117 INFO L225 Difference]: With dead ends: 258351 [2022-03-03 17:25:33,117 INFO L226 Difference]: Without dead ends: 258279 [2022-03-03 17:25:33,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3855 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1703, Invalid=9427, Unknown=0, NotChecked=0, Total=11130 [2022-03-03 17:25:33,118 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 951 mSDsluCounter, 2442 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 2359 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:25:33,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [951 Valid, 2359 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:25:33,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258279 states. [2022-03-03 17:25:39,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258279 to 207733. [2022-03-03 17:25:40,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207733 states, 207732 states have (on average 2.96940288448578) internal successors, (616840), 207732 states have internal predecessors, (616840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:25:41,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207733 states to 207733 states and 616840 transitions. [2022-03-03 17:25:41,947 INFO L78 Accepts]: Start accepts. Automaton has 207733 states and 616840 transitions. Word has length 77 [2022-03-03 17:25:41,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:25:41,947 INFO L470 AbstractCegarLoop]: Abstraction has 207733 states and 616840 transitions. [2022-03-03 17:25:41,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:25:41,948 INFO L276 IsEmpty]: Start isEmpty. Operand 207733 states and 616840 transitions. [2022-03-03 17:25:42,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:25:42,375 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:25:42,376 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:25:42,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-03-03 17:25:42,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:25:42,583 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:25:42,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:25:42,584 INFO L85 PathProgramCache]: Analyzing trace with hash 168878057, now seen corresponding path program 72 times [2022-03-03 17:25:42,584 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:25:42,584 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650960390] [2022-03-03 17:25:42,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:25:42,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:25:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:25:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:25:42,684 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:25:42,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650960390] [2022-03-03 17:25:42,688 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650960390] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:25:42,688 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369784873] [2022-03-03 17:25:42,688 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:25:42,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:25:42,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:25:42,689 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:25:42,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-03 17:25:42,787 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 17:25:42,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:25:42,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:25:42,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:25:43,308 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:25:43,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:25:43,419 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:25:43,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369784873] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:25:43,419 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:25:43,419 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 23 [2022-03-03 17:25:43,419 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343208314] [2022-03-03 17:25:43,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:25:43,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:25:43,419 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:25:43,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:25:43,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:25:43,420 INFO L87 Difference]: Start difference. First operand 207733 states and 616840 transitions. Second operand has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:25:47,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:25:47,995 INFO L93 Difference]: Finished difference Result 290438 states and 857454 transitions. [2022-03-03 17:25:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2022-03-03 17:25:47,996 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:25:47,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:25:50,099 INFO L225 Difference]: With dead ends: 290438 [2022-03-03 17:25:50,099 INFO L226 Difference]: Without dead ends: 290333 [2022-03-03 17:25:50,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12966 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4741, Invalid=25709, Unknown=0, NotChecked=0, Total=30450 [2022-03-03 17:25:50,101 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 1536 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:25:50,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1536 Valid, 2030 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:25:50,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290333 states. [2022-03-03 17:25:56,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290333 to 210753. [2022-03-03 17:25:57,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210753 states, 210752 states have (on average 2.969181787124203) internal successors, (625761), 210752 states have internal predecessors, (625761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:25:58,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210753 states to 210753 states and 625761 transitions. [2022-03-03 17:25:58,373 INFO L78 Accepts]: Start accepts. Automaton has 210753 states and 625761 transitions. Word has length 77 [2022-03-03 17:25:58,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:25:58,373 INFO L470 AbstractCegarLoop]: Abstraction has 210753 states and 625761 transitions. [2022-03-03 17:25:58,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:25:58,373 INFO L276 IsEmpty]: Start isEmpty. Operand 210753 states and 625761 transitions. [2022-03-03 17:25:58,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:25:58,731 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:25:58,731 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:25:58,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-03-03 17:25:58,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:25:58,948 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:25:58,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:25:58,949 INFO L85 PathProgramCache]: Analyzing trace with hash 634657407, now seen corresponding path program 73 times [2022-03-03 17:25:58,949 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:25:58,949 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174388507] [2022-03-03 17:25:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:25:58,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:25:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:25:59,343 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:25:59,343 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:25:59,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174388507] [2022-03-03 17:25:59,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174388507] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:25:59,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201964027] [2022-03-03 17:25:59,343 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:25:59,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:25:59,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:25:59,345 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:25:59,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-03 17:25:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:25:59,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:25:59,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:25:59,654 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:25:59,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:25:59,757 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 17:25:59,757 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201964027] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:25:59,758 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:25:59,758 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 23 [2022-03-03 17:25:59,758 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500918099] [2022-03-03 17:25:59,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:25:59,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:25:59,758 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:25:59,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:25:59,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:25:59,758 INFO L87 Difference]: Start difference. First operand 210753 states and 625761 transitions. Second operand has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:26:03,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:26:03,217 INFO L93 Difference]: Finished difference Result 255728 states and 756243 transitions. [2022-03-03 17:26:03,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-03-03 17:26:03,217 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:26:03,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:26:04,272 INFO L225 Difference]: With dead ends: 255728 [2022-03-03 17:26:04,272 INFO L226 Difference]: Without dead ends: 255680 [2022-03-03 17:26:04,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6823 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2564, Invalid=14728, Unknown=0, NotChecked=0, Total=17292 [2022-03-03 17:26:04,273 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 1075 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:26:04,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1075 Valid, 1813 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:26:04,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255680 states. [2022-03-03 17:26:10,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255680 to 210937. [2022-03-03 17:26:10,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210937 states, 210936 states have (on average 2.969426745553154) internal successors, (626359), 210936 states have internal predecessors, (626359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:26:12,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210937 states to 210937 states and 626359 transitions. [2022-03-03 17:26:12,556 INFO L78 Accepts]: Start accepts. Automaton has 210937 states and 626359 transitions. Word has length 77 [2022-03-03 17:26:12,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:26:12,556 INFO L470 AbstractCegarLoop]: Abstraction has 210937 states and 626359 transitions. [2022-03-03 17:26:12,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:26:12,556 INFO L276 IsEmpty]: Start isEmpty. Operand 210937 states and 626359 transitions. [2022-03-03 17:26:12,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:26:12,997 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:26:12,997 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:26:13,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-03-03 17:26:13,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2022-03-03 17:26:13,211 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:26:13,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:26:13,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1615888565, now seen corresponding path program 74 times [2022-03-03 17:26:13,212 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:26:13,212 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558305259] [2022-03-03 17:26:13,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:26:13,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:26:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:26:13,329 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:26:13,330 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:26:13,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558305259] [2022-03-03 17:26:13,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558305259] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:26:13,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567358990] [2022-03-03 17:26:13,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:26:13,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:26:13,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:26:13,340 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:26:13,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-03 17:26:13,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:26:13,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:26:13,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:26:13,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:26:13,709 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:26:13,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:26:13,830 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:26:13,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567358990] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:26:13,830 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:26:13,830 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 24 [2022-03-03 17:26:13,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225299000] [2022-03-03 17:26:13,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:26:13,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:26:13,843 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:26:13,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:26:13,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:26:13,850 INFO L87 Difference]: Start difference. First operand 210937 states and 626359 transitions. Second operand has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:26:19,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:26:19,357 INFO L93 Difference]: Finished difference Result 287870 states and 851018 transitions. [2022-03-03 17:26:19,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2022-03-03 17:26:19,358 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:26:19,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:26:21,231 INFO L225 Difference]: With dead ends: 287870 [2022-03-03 17:26:21,231 INFO L226 Difference]: Without dead ends: 287705 [2022-03-03 17:26:21,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13697 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4926, Invalid=27294, Unknown=0, NotChecked=0, Total=32220 [2022-03-03 17:26:21,234 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 1498 mSDsluCounter, 2582 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:26:21,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1498 Valid, 2471 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:26:21,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287705 states. [2022-03-03 17:26:28,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287705 to 212673. [2022-03-03 17:26:29,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212673 states, 212672 states have (on average 2.9694035886247367) internal successors, (631509), 212672 states have internal predecessors, (631509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:26:30,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212673 states to 212673 states and 631509 transitions. [2022-03-03 17:26:30,589 INFO L78 Accepts]: Start accepts. Automaton has 212673 states and 631509 transitions. Word has length 77 [2022-03-03 17:26:30,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:26:30,590 INFO L470 AbstractCegarLoop]: Abstraction has 212673 states and 631509 transitions. [2022-03-03 17:26:30,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:26:30,590 INFO L276 IsEmpty]: Start isEmpty. Operand 212673 states and 631509 transitions. [2022-03-03 17:26:30,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:26:30,996 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:26:30,996 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:26:31,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-03-03 17:26:31,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:26:31,201 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:26:31,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:26:31,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1150109215, now seen corresponding path program 75 times [2022-03-03 17:26:31,202 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:26:31,202 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733899855] [2022-03-03 17:26:31,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:26:31,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:26:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:26:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:26:31,312 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:26:31,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733899855] [2022-03-03 17:26:31,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733899855] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:26:31,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28795279] [2022-03-03 17:26:31,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:26:31,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:26:31,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:26:31,318 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:26:31,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-03 17:26:31,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 17:26:31,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:26:31,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:26:31,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:26:31,642 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:26:31,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:26:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:26:31,757 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28795279] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:26:31,757 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:26:31,757 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 24 [2022-03-03 17:26:31,758 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016685217] [2022-03-03 17:26:31,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:26:31,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:26:31,758 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:26:31,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:26:31,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:26:31,758 INFO L87 Difference]: Start difference. First operand 212673 states and 631509 transitions. Second operand has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:26:35,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:26:35,669 INFO L93 Difference]: Finished difference Result 279494 states and 826877 transitions. [2022-03-03 17:26:35,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-03-03 17:26:35,670 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:26:35,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:26:36,802 INFO L225 Difference]: With dead ends: 279494 [2022-03-03 17:26:36,802 INFO L226 Difference]: Without dead ends: 279446 [2022-03-03 17:26:36,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7908 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2796, Invalid=17226, Unknown=0, NotChecked=0, Total=20022 [2022-03-03 17:26:36,803 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 1208 mSDsluCounter, 2497 mSDsCounter, 0 mSdLazyCounter, 1446 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:26:36,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1208 Valid, 2341 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1446 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:26:37,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279446 states. [2022-03-03 17:26:44,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279446 to 209601. [2022-03-03 17:26:44,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209601 states, 209600 states have (on average 2.96981393129771) internal successors, (622473), 209600 states have internal predecessors, (622473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:26:45,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209601 states to 209601 states and 622473 transitions. [2022-03-03 17:26:45,891 INFO L78 Accepts]: Start accepts. Automaton has 209601 states and 622473 transitions. Word has length 77 [2022-03-03 17:26:45,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:26:45,891 INFO L470 AbstractCegarLoop]: Abstraction has 209601 states and 622473 transitions. [2022-03-03 17:26:45,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:26:45,891 INFO L276 IsEmpty]: Start isEmpty. Operand 209601 states and 622473 transitions. [2022-03-03 17:26:46,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:26:46,422 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:26:46,422 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:26:46,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-03-03 17:26:46,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:26:46,635 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:26:46,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:26:46,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1447803935, now seen corresponding path program 76 times [2022-03-03 17:26:46,636 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:26:46,636 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670047445] [2022-03-03 17:26:46,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:26:46,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:26:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:26:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:26:46,810 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:26:46,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670047445] [2022-03-03 17:26:46,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670047445] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:26:46,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783217499] [2022-03-03 17:26:46,810 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:26:46,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:26:46,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:26:46,828 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:26:46,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-03 17:26:46,944 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:26:46,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:26:46,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:26:46,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:26:47,229 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:26:47,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:26:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:26:47,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783217499] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:26:47,335 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:26:47,335 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-03-03 17:26:47,335 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707668218] [2022-03-03 17:26:47,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:26:47,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:26:47,335 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:26:47,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:26:47,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:26:47,336 INFO L87 Difference]: Start difference. First operand 209601 states and 622473 transitions. Second operand has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:26:51,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:26:51,201 INFO L93 Difference]: Finished difference Result 251375 states and 744102 transitions. [2022-03-03 17:26:51,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-03-03 17:26:51,202 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:26:51,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:26:52,716 INFO L225 Difference]: With dead ends: 251375 [2022-03-03 17:26:52,717 INFO L226 Difference]: Without dead ends: 251303 [2022-03-03 17:26:52,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6000 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2274, Invalid=13476, Unknown=0, NotChecked=0, Total=15750 [2022-03-03 17:26:52,717 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 1016 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:26:52,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1016 Valid, 2652 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:26:52,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251303 states. [2022-03-03 17:26:59,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251303 to 210737. [2022-03-03 17:26:59,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210737 states, 210736 states have (on average 2.969995634348189) internal successors, (625885), 210736 states have internal predecessors, (625885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:27:00,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210737 states to 210737 states and 625885 transitions. [2022-03-03 17:27:00,998 INFO L78 Accepts]: Start accepts. Automaton has 210737 states and 625885 transitions. Word has length 77 [2022-03-03 17:27:00,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:27:00,998 INFO L470 AbstractCegarLoop]: Abstraction has 210737 states and 625885 transitions. [2022-03-03 17:27:00,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:27:00,999 INFO L276 IsEmpty]: Start isEmpty. Operand 210737 states and 625885 transitions. [2022-03-03 17:27:01,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:27:01,513 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:27:01,513 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:27:01,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-03-03 17:27:01,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2022-03-03 17:27:01,722 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:27:01,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:27:01,723 INFO L85 PathProgramCache]: Analyzing trace with hash -2110842859, now seen corresponding path program 77 times [2022-03-03 17:27:01,723 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:27:01,723 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798349662] [2022-03-03 17:27:01,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:27:01,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:27:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:27:01,821 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:27:01,821 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:27:01,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798349662] [2022-03-03 17:27:01,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798349662] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:27:01,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107509999] [2022-03-03 17:27:01,821 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:27:01,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:27:01,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:27:01,823 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:27:01,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-03 17:27:01,928 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 17:27:01,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:27:01,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:27:01,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:27:02,180 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:27:02,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:27:02,303 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:27:02,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107509999] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:27:02,304 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:27:02,304 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 24 [2022-03-03 17:27:02,304 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710441553] [2022-03-03 17:27:02,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:27:02,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:27:02,304 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:27:02,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:27:02,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:27:02,305 INFO L87 Difference]: Start difference. First operand 210737 states and 625885 transitions. Second operand has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:27:06,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:27:06,644 INFO L93 Difference]: Finished difference Result 250790 states and 741443 transitions. [2022-03-03 17:27:06,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2022-03-03 17:27:06,644 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:27:06,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:27:07,800 INFO L225 Difference]: With dead ends: 250790 [2022-03-03 17:27:07,800 INFO L226 Difference]: Without dead ends: 250730 [2022-03-03 17:27:07,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13905 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=5514, Invalid=26348, Unknown=0, NotChecked=0, Total=31862 [2022-03-03 17:27:07,802 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 1813 mSDsluCounter, 2790 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:27:07,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1813 Valid, 2636 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:27:08,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250730 states. [2022-03-03 17:27:14,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250730 to 212341. [2022-03-03 17:27:14,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212341 states, 212340 states have (on average 2.9701422247339173) internal successors, (630680), 212340 states have internal predecessors, (630680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:27:16,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212341 states to 212341 states and 630680 transitions. [2022-03-03 17:27:16,388 INFO L78 Accepts]: Start accepts. Automaton has 212341 states and 630680 transitions. Word has length 77 [2022-03-03 17:27:16,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:27:16,388 INFO L470 AbstractCegarLoop]: Abstraction has 212341 states and 630680 transitions. [2022-03-03 17:27:16,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:27:16,389 INFO L276 IsEmpty]: Start isEmpty. Operand 212341 states and 630680 transitions. [2022-03-03 17:27:17,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:27:17,271 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:27:17,271 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:27:17,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-03-03 17:27:17,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-03-03 17:27:17,471 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:27:17,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:27:17,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1645063509, now seen corresponding path program 78 times [2022-03-03 17:27:17,472 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:27:17,472 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668246446] [2022-03-03 17:27:17,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:27:17,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:27:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:27:17,567 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:27:17,567 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:27:17,568 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668246446] [2022-03-03 17:27:17,568 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668246446] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:27:17,569 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171594687] [2022-03-03 17:27:17,569 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:27:17,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:27:17,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:27:17,584 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:27:17,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-03 17:27:17,680 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 17:27:17,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:27:17,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:27:17,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:27:17,997 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:27:17,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:27:18,145 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:27:18,145 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171594687] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:27:18,145 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:27:18,145 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 24 [2022-03-03 17:27:18,145 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316469883] [2022-03-03 17:27:18,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:27:18,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:27:18,146 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:27:18,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:27:18,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:27:18,146 INFO L87 Difference]: Start difference. First operand 212341 states and 630680 transitions. Second operand has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:27:21,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:27:21,814 INFO L93 Difference]: Finished difference Result 248516 states and 734787 transitions. [2022-03-03 17:27:21,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-03-03 17:27:21,814 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:27:21,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:27:23,321 INFO L225 Difference]: With dead ends: 248516 [2022-03-03 17:27:23,322 INFO L226 Difference]: Without dead ends: 248468 [2022-03-03 17:27:23,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6855 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2768, Invalid=14788, Unknown=0, NotChecked=0, Total=17556 [2022-03-03 17:27:23,323 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 1207 mSDsluCounter, 2633 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 2484 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:27:23,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 2484 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:27:23,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248468 states. [2022-03-03 17:27:29,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248468 to 211653. [2022-03-03 17:27:29,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211653 states, 211652 states have (on average 2.9699506737474723) internal successors, (628596), 211652 states have internal predecessors, (628596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:27:30,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211653 states to 211653 states and 628596 transitions. [2022-03-03 17:27:30,805 INFO L78 Accepts]: Start accepts. Automaton has 211653 states and 628596 transitions. Word has length 77 [2022-03-03 17:27:30,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:27:30,806 INFO L470 AbstractCegarLoop]: Abstraction has 211653 states and 628596 transitions. [2022-03-03 17:27:30,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:27:30,806 INFO L276 IsEmpty]: Start isEmpty. Operand 211653 states and 628596 transitions. [2022-03-03 17:27:31,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:27:31,607 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:27:31,607 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:27:31,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-03-03 17:27:31,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:27:31,827 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:27:31,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:27:31,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1942758229, now seen corresponding path program 79 times [2022-03-03 17:27:31,828 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:27:31,828 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163001046] [2022-03-03 17:27:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:27:31,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:27:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:27:31,951 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:27:31,951 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:27:31,952 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163001046] [2022-03-03 17:27:31,952 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163001046] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:27:31,952 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255676571] [2022-03-03 17:27:31,952 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:27:31,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:27:31,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:27:31,956 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:27:31,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-03 17:27:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:27:32,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:27:32,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:27:32,299 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:27:32,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:27:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:27:32,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255676571] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:27:32,420 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:27:32,420 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-03-03 17:27:32,420 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501960499] [2022-03-03 17:27:32,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:27:32,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:27:32,420 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:27:32,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:27:32,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:27:32,421 INFO L87 Difference]: Start difference. First operand 211653 states and 628596 transitions. Second operand has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:27:36,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:27:36,073 INFO L93 Difference]: Finished difference Result 249835 states and 738614 transitions. [2022-03-03 17:27:36,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-03-03 17:27:36,073 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:27:36,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:27:37,474 INFO L225 Difference]: With dead ends: 249835 [2022-03-03 17:27:37,474 INFO L226 Difference]: Without dead ends: 249763 [2022-03-03 17:27:37,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5769 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2448, Invalid=12558, Unknown=0, NotChecked=0, Total=15006 [2022-03-03 17:27:37,475 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 1120 mSDsluCounter, 2466 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 2357 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:27:37,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1120 Valid, 2357 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:27:37,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249763 states. [2022-03-03 17:27:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249763 to 215809. [2022-03-03 17:27:44,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215809 states, 215808 states have (on average 2.970293038256228) internal successors, (641013), 215808 states have internal predecessors, (641013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:27:45,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215809 states to 215809 states and 641013 transitions. [2022-03-03 17:27:45,690 INFO L78 Accepts]: Start accepts. Automaton has 215809 states and 641013 transitions. Word has length 77 [2022-03-03 17:27:45,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:27:45,691 INFO L470 AbstractCegarLoop]: Abstraction has 215809 states and 641013 transitions. [2022-03-03 17:27:45,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:27:45,691 INFO L276 IsEmpty]: Start isEmpty. Operand 215809 states and 641013 transitions. [2022-03-03 17:27:46,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:27:46,172 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:27:46,172 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:27:46,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-03-03 17:27:46,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:27:46,389 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:27:46,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:27:46,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1709318439, now seen corresponding path program 80 times [2022-03-03 17:27:46,389 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:27:46,389 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560455700] [2022-03-03 17:27:46,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:27:46,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:27:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:27:46,465 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:27:46,465 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:27:46,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560455700] [2022-03-03 17:27:46,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560455700] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:27:46,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562779104] [2022-03-03 17:27:46,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:27:46,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:27:46,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:27:46,466 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:27:46,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-03 17:27:46,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:27:46,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:27:46,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:27:46,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:27:46,764 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:27:46,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:27:46,899 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:27:46,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562779104] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:27:46,899 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:27:46,899 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-03-03 17:27:46,899 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565974667] [2022-03-03 17:27:46,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:27:46,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:27:46,900 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:27:46,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:27:46,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:27:46,900 INFO L87 Difference]: Start difference. First operand 215809 states and 641013 transitions. Second operand has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:27:49,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:27:49,716 INFO L93 Difference]: Finished difference Result 234675 states and 694839 transitions. [2022-03-03 17:27:49,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-03 17:27:49,718 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:27:49,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:27:50,556 INFO L225 Difference]: With dead ends: 234675 [2022-03-03 17:27:50,557 INFO L226 Difference]: Without dead ends: 234627 [2022-03-03 17:27:50,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2450 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1158, Invalid=6324, Unknown=0, NotChecked=0, Total=7482 [2022-03-03 17:27:50,558 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 804 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:27:50,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 2023 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:27:51,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234627 states. [2022-03-03 17:27:56,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234627 to 215897. [2022-03-03 17:27:57,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215897 states, 215896 states have (on average 2.970351465520436) internal successors, (641287), 215896 states have internal predecessors, (641287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:27:58,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215897 states to 215897 states and 641287 transitions. [2022-03-03 17:27:58,564 INFO L78 Accepts]: Start accepts. Automaton has 215897 states and 641287 transitions. Word has length 77 [2022-03-03 17:27:58,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:27:58,564 INFO L470 AbstractCegarLoop]: Abstraction has 215897 states and 641287 transitions. [2022-03-03 17:27:58,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:27:58,564 INFO L276 IsEmpty]: Start isEmpty. Operand 215897 states and 641287 transitions. [2022-03-03 17:27:59,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:27:59,064 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:27:59,065 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:27:59,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-03-03 17:27:59,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:27:59,279 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:27:59,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:27:59,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1719725937, now seen corresponding path program 81 times [2022-03-03 17:27:59,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:27:59,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670405919] [2022-03-03 17:27:59,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:27:59,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:27:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:27:59,395 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:27:59,395 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:27:59,395 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670405919] [2022-03-03 17:27:59,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670405919] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:27:59,395 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099162429] [2022-03-03 17:27:59,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:27:59,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:27:59,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:27:59,396 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:27:59,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-03 17:27:59,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 17:27:59,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:27:59,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:27:59,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:27:59,672 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:27:59,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:27:59,786 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:27:59,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099162429] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:27:59,786 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:27:59,786 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2022-03-03 17:27:59,786 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483250507] [2022-03-03 17:27:59,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:27:59,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:27:59,787 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:27:59,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:27:59,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:27:59,787 INFO L87 Difference]: Start difference. First operand 215897 states and 641287 transitions. Second operand has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:28:02,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:28:02,591 INFO L93 Difference]: Finished difference Result 222155 states and 658544 transitions. [2022-03-03 17:28:02,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-03 17:28:02,591 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:28:02,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:28:03,874 INFO L225 Difference]: With dead ends: 222155 [2022-03-03 17:28:03,874 INFO L226 Difference]: Without dead ends: 221915 [2022-03-03 17:28:03,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1998 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1289, Invalid=5851, Unknown=0, NotChecked=0, Total=7140 [2022-03-03 17:28:03,874 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 716 mSDsluCounter, 2545 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:28:03,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [716 Valid, 2395 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:28:04,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221915 states. [2022-03-03 17:28:09,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221915 to 216129. [2022-03-03 17:28:09,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216129 states, 216128 states have (on average 2.970114931892212) internal successors, (641925), 216128 states have internal predecessors, (641925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:28:10,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216129 states to 216129 states and 641925 transitions. [2022-03-03 17:28:10,953 INFO L78 Accepts]: Start accepts. Automaton has 216129 states and 641925 transitions. Word has length 77 [2022-03-03 17:28:10,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:28:10,954 INFO L470 AbstractCegarLoop]: Abstraction has 216129 states and 641925 transitions. [2022-03-03 17:28:10,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:28:10,954 INFO L276 IsEmpty]: Start isEmpty. Operand 216129 states and 641925 transitions. [2022-03-03 17:28:11,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:28:11,370 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:28:11,370 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:28:11,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-03-03 17:28:11,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:28:11,586 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:28:11,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:28:11,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1928937225, now seen corresponding path program 82 times [2022-03-03 17:28:11,586 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:28:11,586 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990538845] [2022-03-03 17:28:11,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:28:11,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:28:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:28:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:28:11,661 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:28:11,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990538845] [2022-03-03 17:28:11,662 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990538845] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:28:11,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71118331] [2022-03-03 17:28:11,662 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:28:11,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:28:11,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:28:11,663 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:28:11,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-03-03 17:28:11,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:28:11,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:28:11,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:28:11,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:28:11,941 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:28:11,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:28:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:28:12,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71118331] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:28:12,055 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:28:12,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2022-03-03 17:28:12,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228387640] [2022-03-03 17:28:12,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:28:12,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:28:12,055 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:28:12,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:28:12,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:28:12,056 INFO L87 Difference]: Start difference. First operand 216129 states and 641925 transitions. Second operand has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:28:14,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:28:14,708 INFO L93 Difference]: Finished difference Result 222672 states and 659822 transitions. [2022-03-03 17:28:14,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-03 17:28:14,709 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:28:14,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:28:15,819 INFO L225 Difference]: With dead ends: 222672 [2022-03-03 17:28:15,819 INFO L226 Difference]: Without dead ends: 222627 [2022-03-03 17:28:15,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3463 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1897, Invalid=8405, Unknown=0, NotChecked=0, Total=10302 [2022-03-03 17:28:15,820 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 1029 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:28:15,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1029 Valid, 1893 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:28:16,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222627 states. [2022-03-03 17:28:21,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222627 to 216153. [2022-03-03 17:28:21,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216153 states, 216152 states have (on average 2.970127502868352) internal successors, (641999), 216152 states have internal predecessors, (641999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:28:23,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216153 states to 216153 states and 641999 transitions. [2022-03-03 17:28:23,608 INFO L78 Accepts]: Start accepts. Automaton has 216153 states and 641999 transitions. Word has length 77 [2022-03-03 17:28:23,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:28:23,608 INFO L470 AbstractCegarLoop]: Abstraction has 216153 states and 641999 transitions. [2022-03-03 17:28:23,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:28:23,608 INFO L276 IsEmpty]: Start isEmpty. Operand 216153 states and 641999 transitions. [2022-03-03 17:28:24,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:28:24,520 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:28:24,520 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:28:24,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-03-03 17:28:24,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:28:24,740 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:28:24,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:28:24,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1463157875, now seen corresponding path program 83 times [2022-03-03 17:28:24,740 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:28:24,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703285831] [2022-03-03 17:28:24,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:28:24,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:28:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:28:24,822 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:28:24,822 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:28:24,823 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703285831] [2022-03-03 17:28:24,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703285831] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:28:24,823 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131796775] [2022-03-03 17:28:24,823 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:28:24,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:28:24,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:28:24,824 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:28:24,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-03-03 17:28:24,937 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 17:28:24,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:28:24,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:28:24,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:28:25,162 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:28:25,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:28:25,283 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:28:25,283 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131796775] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:28:25,283 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:28:25,283 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2022-03-03 17:28:25,284 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385255559] [2022-03-03 17:28:25,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:28:25,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:28:25,284 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:28:25,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:28:25,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:28:25,284 INFO L87 Difference]: Start difference. First operand 216153 states and 641999 transitions. Second operand has 23 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 23 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:28:28,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:28:28,312 INFO L93 Difference]: Finished difference Result 221152 states and 655846 transitions. [2022-03-03 17:28:28,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 17:28:28,312 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 23 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:28:28,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:28:29,281 INFO L225 Difference]: With dead ends: 221152 [2022-03-03 17:28:29,281 INFO L226 Difference]: Without dead ends: 221128 [2022-03-03 17:28:29,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1263 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=812, Invalid=3744, Unknown=0, NotChecked=0, Total=4556 [2022-03-03 17:28:29,282 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 809 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:28:29,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 1489 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:28:29,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221128 states. [2022-03-03 17:28:35,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221128 to 216141. [2022-03-03 17:28:35,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216141 states, 216140 states have (on average 2.9701212177292495) internal successors, (641962), 216140 states have internal predecessors, (641962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:28:36,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216141 states to 216141 states and 641962 transitions. [2022-03-03 17:28:36,901 INFO L78 Accepts]: Start accepts. Automaton has 216141 states and 641962 transitions. Word has length 77 [2022-03-03 17:28:36,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:28:36,901 INFO L470 AbstractCegarLoop]: Abstraction has 216141 states and 641962 transitions. [2022-03-03 17:28:36,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 23 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:28:36,901 INFO L276 IsEmpty]: Start isEmpty. Operand 216141 states and 641962 transitions. [2022-03-03 17:28:37,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:28:37,706 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:28:37,706 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:28:37,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-03-03 17:28:37,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2022-03-03 17:28:37,908 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:28:37,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:28:37,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1911227973, now seen corresponding path program 84 times [2022-03-03 17:28:37,909 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:28:37,909 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447869036] [2022-03-03 17:28:37,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:28:37,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:28:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:28:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:28:37,984 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:28:37,984 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447869036] [2022-03-03 17:28:37,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447869036] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:28:37,984 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530388781] [2022-03-03 17:28:37,984 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:28:37,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:28:37,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:28:37,985 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:28:37,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-03-03 17:28:38,086 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 17:28:38,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:28:38,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:28:38,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:28:38,258 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:28:38,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:28:38,368 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:28:38,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530388781] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:28:38,368 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:28:38,368 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 22 [2022-03-03 17:28:38,368 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169959511] [2022-03-03 17:28:38,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:28:38,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:28:38,369 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:28:38,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:28:38,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:28:38,369 INFO L87 Difference]: Start difference. First operand 216141 states and 641962 transitions. Second operand has 22 states, 22 states have (on average 4.7272727272727275) internal successors, (104), 22 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:28:40,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:28:40,481 INFO L93 Difference]: Finished difference Result 220822 states and 654959 transitions. [2022-03-03 17:28:40,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 17:28:40,481 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7272727272727275) internal successors, (104), 22 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:28:40,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:28:41,379 INFO L225 Difference]: With dead ends: 220822 [2022-03-03 17:28:41,379 INFO L226 Difference]: Without dead ends: 220687 [2022-03-03 17:28:41,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 149 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=551, Invalid=1999, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 17:28:41,380 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 528 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:28:41,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 1548 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:28:41,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220687 states. [2022-03-03 17:28:47,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220687 to 216097. [2022-03-03 17:28:47,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216097 states, 216096 states have (on average 2.9700919961498595) internal successors, (641825), 216096 states have internal predecessors, (641825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:28:48,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216097 states to 216097 states and 641825 transitions. [2022-03-03 17:28:48,904 INFO L78 Accepts]: Start accepts. Automaton has 216097 states and 641825 transitions. Word has length 77 [2022-03-03 17:28:48,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:28:48,905 INFO L470 AbstractCegarLoop]: Abstraction has 216097 states and 641825 transitions. [2022-03-03 17:28:48,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.7272727272727275) internal successors, (104), 22 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:28:48,905 INFO L276 IsEmpty]: Start isEmpty. Operand 216097 states and 641825 transitions. [2022-03-03 17:28:49,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:28:49,308 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:28:49,308 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:28:49,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-03-03 17:28:49,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:28:49,524 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:28:49,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:28:49,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1425613745, now seen corresponding path program 85 times [2022-03-03 17:28:49,525 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:28:49,525 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041632049] [2022-03-03 17:28:49,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:28:49,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:28:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:28:49,611 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:28:49,611 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:28:49,612 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041632049] [2022-03-03 17:28:49,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041632049] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:28:49,612 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727499932] [2022-03-03 17:28:49,612 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:28:49,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:28:49,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:28:49,636 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:28:49,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-03-03 17:28:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:28:49,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:28:49,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:28:49,947 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:28:49,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:28:50,076 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:28:50,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727499932] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:28:50,076 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:28:50,077 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-03-03 17:28:50,077 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676110334] [2022-03-03 17:28:50,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:28:50,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:28:50,077 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:28:50,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:28:50,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:28:50,077 INFO L87 Difference]: Start difference. First operand 216097 states and 641825 transitions. Second operand has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:28:53,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:28:53,815 INFO L93 Difference]: Finished difference Result 229556 states and 679218 transitions. [2022-03-03 17:28:53,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-03-03 17:28:53,815 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:28:53,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:28:54,993 INFO L225 Difference]: With dead ends: 229556 [2022-03-03 17:28:54,993 INFO L226 Difference]: Without dead ends: 229136 [2022-03-03 17:28:54,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5757 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3085, Invalid=14737, Unknown=0, NotChecked=0, Total=17822 [2022-03-03 17:28:54,995 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 809 mSDsluCounter, 2827 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:28:54,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 2666 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:28:55,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229136 states. [2022-03-03 17:29:00,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229136 to 218537. [2022-03-03 17:29:00,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218537 states, 218536 states have (on average 2.969135520005857) internal successors, (648863), 218536 states have internal predecessors, (648863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:29:02,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218537 states to 218537 states and 648863 transitions. [2022-03-03 17:29:02,385 INFO L78 Accepts]: Start accepts. Automaton has 218537 states and 648863 transitions. Word has length 77 [2022-03-03 17:29:02,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:29:02,385 INFO L470 AbstractCegarLoop]: Abstraction has 218537 states and 648863 transitions. [2022-03-03 17:29:02,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:29:02,386 INFO L276 IsEmpty]: Start isEmpty. Operand 218537 states and 648863 transitions. [2022-03-03 17:29:03,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:29:03,268 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:29:03,268 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:29:03,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-03-03 17:29:03,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:29:03,485 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:29:03,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:29:03,485 INFO L85 PathProgramCache]: Analyzing trace with hash -779309611, now seen corresponding path program 86 times [2022-03-03 17:29:03,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:29:03,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455034941] [2022-03-03 17:29:03,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:29:03,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:29:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:29:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:29:03,590 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:29:03,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455034941] [2022-03-03 17:29:03,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455034941] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:29:03,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809571634] [2022-03-03 17:29:03,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:29:03,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:29:03,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:29:03,591 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:29:03,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-03-03 17:29:03,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:29:03,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:29:03,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:29:03,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:29:03,919 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:29:03,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:29:04,042 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:29:04,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809571634] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:29:04,042 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:29:04,042 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-03-03 17:29:04,042 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369065302] [2022-03-03 17:29:04,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:29:04,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:29:04,043 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:29:04,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:29:04,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:29:04,043 INFO L87 Difference]: Start difference. First operand 218537 states and 648863 transitions. Second operand has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:29:07,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:29:07,689 INFO L93 Difference]: Finished difference Result 234952 states and 694621 transitions. [2022-03-03 17:29:07,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-03-03 17:29:07,689 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:29:07,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:29:09,087 INFO L225 Difference]: With dead ends: 234952 [2022-03-03 17:29:09,087 INFO L226 Difference]: Without dead ends: 234877 [2022-03-03 17:29:09,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6140 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3175, Invalid=14647, Unknown=0, NotChecked=0, Total=17822 [2022-03-03 17:29:09,088 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 853 mSDsluCounter, 2923 mSDsCounter, 0 mSdLazyCounter, 1578 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:29:09,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 2788 Invalid, 1663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1578 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:29:09,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234877 states. [2022-03-03 17:29:14,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234877 to 221305. [2022-03-03 17:29:14,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221305 states, 221304 states have (on average 2.9697746086830783) internal successors, (657223), 221304 states have internal predecessors, (657223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:29:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221305 states to 221305 states and 657223 transitions. [2022-03-03 17:29:16,747 INFO L78 Accepts]: Start accepts. Automaton has 221305 states and 657223 transitions. Word has length 77 [2022-03-03 17:29:16,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:29:16,747 INFO L470 AbstractCegarLoop]: Abstraction has 221305 states and 657223 transitions. [2022-03-03 17:29:16,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:29:16,747 INFO L276 IsEmpty]: Start isEmpty. Operand 221305 states and 657223 transitions. [2022-03-03 17:29:17,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:29:17,340 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:29:17,340 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:29:17,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-03-03 17:29:17,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:29:17,559 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:29:17,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:29:17,560 INFO L85 PathProgramCache]: Analyzing trace with hash -313530261, now seen corresponding path program 87 times [2022-03-03 17:29:17,560 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:29:17,560 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591526057] [2022-03-03 17:29:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:29:17,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:29:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:29:17,985 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:29:17,985 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:29:17,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591526057] [2022-03-03 17:29:17,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591526057] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:29:17,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411832837] [2022-03-03 17:29:17,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:29:17,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:29:17,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:29:18,000 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:29:18,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-03-03 17:29:18,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 17:29:18,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:29:18,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:29:18,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:29:18,401 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:29:18,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:29:18,529 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:29:18,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411832837] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:29:18,529 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:29:18,529 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-03-03 17:29:18,530 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637239965] [2022-03-03 17:29:18,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:29:18,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:29:18,530 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:29:18,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:29:18,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:29:18,530 INFO L87 Difference]: Start difference. First operand 221305 states and 657223 transitions. Second operand has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:29:21,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:29:21,921 INFO L93 Difference]: Finished difference Result 231713 states and 685850 transitions. [2022-03-03 17:29:21,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-03-03 17:29:21,922 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:29:21,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:29:22,975 INFO L225 Difference]: With dead ends: 231713 [2022-03-03 17:29:22,975 INFO L226 Difference]: Without dead ends: 231641 [2022-03-03 17:29:22,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4816 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2297, Invalid=12223, Unknown=0, NotChecked=0, Total=14520 [2022-03-03 17:29:22,976 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 800 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:29:22,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [800 Valid, 2869 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1655 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:29:23,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231641 states. [2022-03-03 17:29:29,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231641 to 221265. [2022-03-03 17:29:29,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221265 states, 221264 states have (on average 2.969633559910333) internal successors, (657073), 221264 states have internal predecessors, (657073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:29:30,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221265 states to 221265 states and 657073 transitions. [2022-03-03 17:29:30,717 INFO L78 Accepts]: Start accepts. Automaton has 221265 states and 657073 transitions. Word has length 77 [2022-03-03 17:29:30,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:29:30,718 INFO L470 AbstractCegarLoop]: Abstraction has 221265 states and 657073 transitions. [2022-03-03 17:29:30,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:29:30,718 INFO L276 IsEmpty]: Start isEmpty. Operand 221265 states and 657073 transitions. [2022-03-03 17:29:31,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:29:31,178 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:29:31,178 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:29:31,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-03-03 17:29:31,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:29:31,379 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:29:31,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:29:31,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1295506767, now seen corresponding path program 88 times [2022-03-03 17:29:31,379 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:29:31,379 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106793892] [2022-03-03 17:29:31,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:29:31,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:29:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:29:31,472 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:29:31,473 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:29:31,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106793892] [2022-03-03 17:29:31,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106793892] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:29:31,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198307980] [2022-03-03 17:29:31,473 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:29:31,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:29:31,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:29:31,474 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:29:31,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-03-03 17:29:31,568 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:29:31,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:29:31,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:29:31,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:29:31,772 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:29:31,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:29:31,901 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:29:31,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198307980] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:29:31,901 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:29:31,901 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-03-03 17:29:31,901 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012128990] [2022-03-03 17:29:31,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:29:31,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:29:31,902 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:29:31,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:29:31,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:29:31,902 INFO L87 Difference]: Start difference. First operand 221265 states and 657073 transitions. Second operand has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:29:35,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:29:35,604 INFO L93 Difference]: Finished difference Result 241421 states and 713959 transitions. [2022-03-03 17:29:35,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-03-03 17:29:35,605 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:29:35,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:29:36,393 INFO L225 Difference]: With dead ends: 241421 [2022-03-03 17:29:36,393 INFO L226 Difference]: Without dead ends: 240986 [2022-03-03 17:29:36,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4297 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2245, Invalid=11561, Unknown=0, NotChecked=0, Total=13806 [2022-03-03 17:29:36,394 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 638 mSDsluCounter, 3271 mSDsCounter, 0 mSdLazyCounter, 1872 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 1947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:29:36,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [638 Valid, 3107 Invalid, 1947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1872 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:29:36,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240986 states. [2022-03-03 17:29:42,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240986 to 226485. [2022-03-03 17:29:42,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226485 states, 226484 states have (on average 2.968651207149291) internal successors, (672352), 226484 states have internal predecessors, (672352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:29:44,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226485 states to 226485 states and 672352 transitions. [2022-03-03 17:29:44,758 INFO L78 Accepts]: Start accepts. Automaton has 226485 states and 672352 transitions. Word has length 77 [2022-03-03 17:29:44,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:29:44,759 INFO L470 AbstractCegarLoop]: Abstraction has 226485 states and 672352 transitions. [2022-03-03 17:29:44,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:29:44,759 INFO L276 IsEmpty]: Start isEmpty. Operand 226485 states and 672352 transitions. [2022-03-03 17:29:45,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:29:45,656 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:29:45,656 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:29:45,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-03-03 17:29:45,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:29:45,873 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:29:45,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:29:45,873 INFO L85 PathProgramCache]: Analyzing trace with hash -649202633, now seen corresponding path program 89 times [2022-03-03 17:29:45,873 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:29:45,873 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306990393] [2022-03-03 17:29:45,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:29:45,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:29:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:29:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:29:45,997 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:29:45,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306990393] [2022-03-03 17:29:45,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306990393] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:29:45,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782816528] [2022-03-03 17:29:45,997 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:29:45,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:29:45,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:29:45,998 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:29:46,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-03-03 17:29:46,101 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 17:29:46,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:29:46,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:29:46,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:29:46,364 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:29:46,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:29:46,488 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:29:46,488 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782816528] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:29:46,488 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:29:46,488 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-03-03 17:29:46,488 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895061591] [2022-03-03 17:29:46,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:29:46,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:29:46,488 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:29:46,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:29:46,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:29:46,489 INFO L87 Difference]: Start difference. First operand 226485 states and 672352 transitions. Second operand has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:29:50,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:29:50,030 INFO L93 Difference]: Finished difference Result 265772 states and 786440 transitions. [2022-03-03 17:29:50,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-03-03 17:29:50,030 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:29:50,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:29:51,373 INFO L225 Difference]: With dead ends: 265772 [2022-03-03 17:29:51,373 INFO L226 Difference]: Without dead ends: 265697 [2022-03-03 17:29:51,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4932 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2468, Invalid=12294, Unknown=0, NotChecked=0, Total=14762 [2022-03-03 17:29:51,374 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 764 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:29:51,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 3020 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:29:51,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265697 states. [2022-03-03 17:29:57,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265697 to 238317. [2022-03-03 17:29:58,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238317 states, 238316 states have (on average 2.970786686584199) internal successors, (707986), 238316 states have internal predecessors, (707986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:30:00,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238317 states to 238317 states and 707986 transitions. [2022-03-03 17:30:00,054 INFO L78 Accepts]: Start accepts. Automaton has 238317 states and 707986 transitions. Word has length 77 [2022-03-03 17:30:00,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:30:00,054 INFO L470 AbstractCegarLoop]: Abstraction has 238317 states and 707986 transitions. [2022-03-03 17:30:00,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:30:00,055 INFO L276 IsEmpty]: Start isEmpty. Operand 238317 states and 707986 transitions. [2022-03-03 17:30:00,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:30:00,578 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:30:00,579 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:30:00,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-03-03 17:30:00,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2022-03-03 17:30:00,796 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:30:00,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:30:00,797 INFO L85 PathProgramCache]: Analyzing trace with hash -183423283, now seen corresponding path program 90 times [2022-03-03 17:30:00,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:30:00,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561230579] [2022-03-03 17:30:00,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:30:00,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:30:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:30:00,880 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:30:00,880 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:30:00,880 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561230579] [2022-03-03 17:30:00,880 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561230579] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:30:00,880 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385484408] [2022-03-03 17:30:00,880 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:30:00,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:30:00,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:30:00,881 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:30:00,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-03-03 17:30:00,983 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 17:30:00,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:30:00,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:30:00,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:30:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:30:01,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:30:01,315 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:30:01,315 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385484408] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:30:01,315 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:30:01,315 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-03-03 17:30:01,315 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446468011] [2022-03-03 17:30:01,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:30:01,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:30:01,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:30:01,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:30:01,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:30:01,316 INFO L87 Difference]: Start difference. First operand 238317 states and 707986 transitions. Second operand has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:30:04,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:30:04,568 INFO L93 Difference]: Finished difference Result 258315 states and 765331 transitions. [2022-03-03 17:30:04,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-03-03 17:30:04,568 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:30:04,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:30:06,011 INFO L225 Difference]: With dead ends: 258315 [2022-03-03 17:30:06,011 INFO L226 Difference]: Without dead ends: 258267 [2022-03-03 17:30:06,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3631 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1746, Invalid=9596, Unknown=0, NotChecked=0, Total=11342 [2022-03-03 17:30:06,012 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 622 mSDsluCounter, 2856 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 2733 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:30:06,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 2733 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1539 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:30:06,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258267 states. [2022-03-03 17:30:12,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258267 to 238149. [2022-03-03 17:30:13,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238149 states, 238148 states have (on average 2.9703041805935806) internal successors, (707372), 238148 states have internal predecessors, (707372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:30:15,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238149 states to 238149 states and 707372 transitions. [2022-03-03 17:30:15,072 INFO L78 Accepts]: Start accepts. Automaton has 238149 states and 707372 transitions. Word has length 77 [2022-03-03 17:30:15,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:30:15,072 INFO L470 AbstractCegarLoop]: Abstraction has 238149 states and 707372 transitions. [2022-03-03 17:30:15,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:30:15,072 INFO L276 IsEmpty]: Start isEmpty. Operand 238149 states and 707372 transitions. [2022-03-03 17:30:15,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:30:15,631 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:30:15,631 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:30:16,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-03-03 17:30:16,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2022-03-03 17:30:16,184 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:30:16,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:30:16,203 INFO L85 PathProgramCache]: Analyzing trace with hash -374353777, now seen corresponding path program 91 times [2022-03-03 17:30:16,203 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:30:16,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588523362] [2022-03-03 17:30:16,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:30:16,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:30:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:30:16,347 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:30:16,347 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:30:16,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588523362] [2022-03-03 17:30:16,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588523362] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:30:16,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736484806] [2022-03-03 17:30:16,347 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:30:16,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:30:16,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:30:16,367 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:30:16,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-03-03 17:30:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:30:16,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:30:16,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:30:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:30:16,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:30:16,820 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:30:16,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736484806] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:30:16,821 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:30:16,821 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2022-03-03 17:30:16,821 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443512660] [2022-03-03 17:30:16,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:30:16,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:30:16,821 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:30:16,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:30:16,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:30:16,821 INFO L87 Difference]: Start difference. First operand 238149 states and 707372 transitions. Second operand has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:30:19,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:30:19,771 INFO L93 Difference]: Finished difference Result 253045 states and 749215 transitions. [2022-03-03 17:30:19,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-03 17:30:19,772 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:30:19,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:30:20,778 INFO L225 Difference]: With dead ends: 253045 [2022-03-03 17:30:20,778 INFO L226 Difference]: Without dead ends: 252670 [2022-03-03 17:30:20,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2393 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1348, Invalid=6842, Unknown=0, NotChecked=0, Total=8190 [2022-03-03 17:30:20,779 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 515 mSDsluCounter, 2501 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:30:20,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 2430 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:30:21,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252670 states. [2022-03-03 17:30:26,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252670 to 241269. [2022-03-03 17:30:27,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241269 states, 241268 states have (on average 2.969096606263574) internal successors, (716348), 241268 states have internal predecessors, (716348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:30:29,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241269 states to 241269 states and 716348 transitions. [2022-03-03 17:30:29,100 INFO L78 Accepts]: Start accepts. Automaton has 241269 states and 716348 transitions. Word has length 77 [2022-03-03 17:30:29,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:30:29,100 INFO L470 AbstractCegarLoop]: Abstraction has 241269 states and 716348 transitions. [2022-03-03 17:30:29,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:30:29,100 INFO L276 IsEmpty]: Start isEmpty. Operand 241269 states and 716348 transitions. [2022-03-03 17:30:29,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:30:29,625 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:30:29,625 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:30:29,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-03-03 17:30:29,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-03-03 17:30:29,828 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:30:29,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:30:29,828 INFO L85 PathProgramCache]: Analyzing trace with hash 271950357, now seen corresponding path program 92 times [2022-03-03 17:30:29,828 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:30:29,828 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226873520] [2022-03-03 17:30:29,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:30:29,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:30:29,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:30:29,909 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:30:29,909 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:30:29,909 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226873520] [2022-03-03 17:30:29,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226873520] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:30:29,909 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355173793] [2022-03-03 17:30:29,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:30:29,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:30:29,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:30:29,910 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:30:29,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-03-03 17:30:30,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:30:30,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:30:30,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:30:30,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:30:30,213 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:30:30,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:30:30,321 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:30:30,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355173793] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:30:30,321 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:30:30,321 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2022-03-03 17:30:30,321 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873726866] [2022-03-03 17:30:30,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:30:30,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:30:30,322 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:30:30,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:30:30,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:30:30,322 INFO L87 Difference]: Start difference. First operand 241269 states and 716348 transitions. Second operand has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:30:34,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:30:34,908 INFO L93 Difference]: Finished difference Result 311106 states and 922338 transitions. [2022-03-03 17:30:34,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-03 17:30:34,909 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:30:34,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:30:36,761 INFO L225 Difference]: With dead ends: 311106 [2022-03-03 17:30:36,761 INFO L226 Difference]: Without dead ends: 311001 [2022-03-03 17:30:36,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3573 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1851, Invalid=9069, Unknown=0, NotChecked=0, Total=10920 [2022-03-03 17:30:36,762 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 759 mSDsluCounter, 2791 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 2669 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:30:36,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 2669 Invalid, 1618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:30:37,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311001 states. [2022-03-03 17:30:45,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311001 to 287617. [2022-03-03 17:30:46,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287617 states, 287616 states have (on average 2.9759714341344012) internal successors, (855937), 287616 states have internal predecessors, (855937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:30:48,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287617 states to 287617 states and 855937 transitions. [2022-03-03 17:30:48,848 INFO L78 Accepts]: Start accepts. Automaton has 287617 states and 855937 transitions. Word has length 77 [2022-03-03 17:30:48,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:30:48,848 INFO L470 AbstractCegarLoop]: Abstraction has 287617 states and 855937 transitions. [2022-03-03 17:30:48,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:30:48,848 INFO L276 IsEmpty]: Start isEmpty. Operand 287617 states and 855937 transitions. [2022-03-03 17:30:49,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:30:49,852 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:30:49,852 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:30:49,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-03-03 17:30:50,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-03-03 17:30:50,069 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:30:50,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:30:50,069 INFO L85 PathProgramCache]: Analyzing trace with hash 737729707, now seen corresponding path program 93 times [2022-03-03 17:30:50,069 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:30:50,070 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341070920] [2022-03-03 17:30:50,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:30:50,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:30:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:30:50,158 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:30:50,158 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:30:50,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341070920] [2022-03-03 17:30:50,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341070920] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:30:50,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298030088] [2022-03-03 17:30:50,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:30:50,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:30:50,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:30:50,160 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:30:50,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-03-03 17:30:50,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 17:30:50,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:30:50,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:30:50,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:30:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:30:50,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:30:50,584 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:30:50,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298030088] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:30:50,584 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:30:50,584 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2022-03-03 17:30:50,584 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817465132] [2022-03-03 17:30:50,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:30:50,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:30:50,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:30:50,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:30:50,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:30:50,585 INFO L87 Difference]: Start difference. First operand 287617 states and 855937 transitions. Second operand has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:30:53,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:30:53,853 INFO L93 Difference]: Finished difference Result 304124 states and 902612 transitions. [2022-03-03 17:30:53,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-03 17:30:53,853 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:30:53,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:30:55,266 INFO L225 Difference]: With dead ends: 304124 [2022-03-03 17:30:55,266 INFO L226 Difference]: Without dead ends: 304052 [2022-03-03 17:30:55,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2391 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1286, Invalid=6546, Unknown=0, NotChecked=0, Total=7832 [2022-03-03 17:30:55,267 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 578 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:30:55,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 2673 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:30:55,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304052 states. [2022-03-03 17:31:03,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304052 to 287505. [2022-03-03 17:31:03,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287505 states, 287504 states have (on average 2.9755864266236296) internal successors, (855493), 287504 states have internal predecessors, (855493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:31:05,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287505 states to 287505 states and 855493 transitions. [2022-03-03 17:31:05,885 INFO L78 Accepts]: Start accepts. Automaton has 287505 states and 855493 transitions. Word has length 77 [2022-03-03 17:31:05,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:31:05,885 INFO L470 AbstractCegarLoop]: Abstraction has 287505 states and 855493 transitions. [2022-03-03 17:31:05,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:31:05,886 INFO L276 IsEmpty]: Start isEmpty. Operand 287505 states and 855493 transitions. [2022-03-03 17:31:06,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:31:06,487 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:31:06,487 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:31:06,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-03-03 17:31:06,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:31:06,689 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:31:06,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:31:06,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1995139221, now seen corresponding path program 94 times [2022-03-03 17:31:06,689 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:31:06,689 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82204339] [2022-03-03 17:31:06,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:31:06,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:31:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:31:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:31:06,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:31:06,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82204339] [2022-03-03 17:31:06,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82204339] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:31:06,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523787258] [2022-03-03 17:31:06,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:31:06,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:31:06,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:31:06,767 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:31:06,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-03-03 17:31:06,866 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:31:06,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:31:06,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:31:06,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:31:07,099 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:31:07,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:31:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:31:07,217 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523787258] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:31:07,217 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:31:07,217 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2022-03-03 17:31:07,217 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893471671] [2022-03-03 17:31:07,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:31:07,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:31:07,217 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:31:07,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:31:07,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:31:07,217 INFO L87 Difference]: Start difference. First operand 287505 states and 855493 transitions. Second operand has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:31:11,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:31:11,384 INFO L93 Difference]: Finished difference Result 341227 states and 1012531 transitions. [2022-03-03 17:31:11,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-03-03 17:31:11,387 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:31:11,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:31:13,056 INFO L225 Difference]: With dead ends: 341227 [2022-03-03 17:31:13,056 INFO L226 Difference]: Without dead ends: 341152 [2022-03-03 17:31:13,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2692 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1327, Invalid=7229, Unknown=0, NotChecked=0, Total=8556 [2022-03-03 17:31:13,057 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 577 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:31:13,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 2225 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:31:13,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341152 states. [2022-03-03 17:31:22,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341152 to 307833. [2022-03-03 17:31:23,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307833 states, 307832 states have (on average 2.9741514852257076) internal successors, (915539), 307832 states have internal predecessors, (915539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:31:24,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307833 states to 307833 states and 915539 transitions. [2022-03-03 17:31:24,799 INFO L78 Accepts]: Start accepts. Automaton has 307833 states and 915539 transitions. Word has length 77 [2022-03-03 17:31:24,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:31:24,799 INFO L470 AbstractCegarLoop]: Abstraction has 307833 states and 915539 transitions. [2022-03-03 17:31:24,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:31:24,799 INFO L276 IsEmpty]: Start isEmpty. Operand 307833 states and 915539 transitions. [2022-03-03 17:31:25,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:31:25,863 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:31:25,863 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:31:25,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-03-03 17:31:26,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:31:26,077 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:31:26,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:31:26,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1834048725, now seen corresponding path program 95 times [2022-03-03 17:31:26,077 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:31:26,077 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978723975] [2022-03-03 17:31:26,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:31:26,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:31:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:31:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:31:26,194 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:31:26,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978723975] [2022-03-03 17:31:26,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978723975] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:31:26,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008404404] [2022-03-03 17:31:26,195 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:31:26,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:31:26,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:31:26,196 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:31:26,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-03-03 17:31:26,306 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 17:31:26,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:31:26,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:31:26,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:31:26,526 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:31:26,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:31:26,644 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:31:26,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008404404] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:31:26,645 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:31:26,645 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2022-03-03 17:31:26,645 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334839177] [2022-03-03 17:31:26,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:31:26,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:31:26,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:31:26,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:31:26,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:31:26,646 INFO L87 Difference]: Start difference. First operand 307833 states and 915539 transitions. Second operand has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:31:30,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:31:30,520 INFO L93 Difference]: Finished difference Result 336059 states and 997939 transitions. [2022-03-03 17:31:30,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-03-03 17:31:30,520 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:31:30,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:31:31,894 INFO L225 Difference]: With dead ends: 336059 [2022-03-03 17:31:31,894 INFO L226 Difference]: Without dead ends: 336011 [2022-03-03 17:31:31,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1983 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1023, Invalid=5619, Unknown=0, NotChecked=0, Total=6642 [2022-03-03 17:31:31,908 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 532 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 1518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:31:31,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 2481 Invalid, 1518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:31:32,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336011 states. [2022-03-03 17:31:41,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336011 to 318833. [2022-03-03 17:31:41,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318833 states, 318832 states have (on average 2.9745477241933056) internal successors, (948381), 318832 states have internal predecessors, (948381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:31:43,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318833 states to 318833 states and 948381 transitions. [2022-03-03 17:31:43,883 INFO L78 Accepts]: Start accepts. Automaton has 318833 states and 948381 transitions. Word has length 77 [2022-03-03 17:31:43,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:31:43,883 INFO L470 AbstractCegarLoop]: Abstraction has 318833 states and 948381 transitions. [2022-03-03 17:31:43,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:31:43,883 INFO L276 IsEmpty]: Start isEmpty. Operand 318833 states and 948381 transitions. [2022-03-03 17:31:45,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:31:45,032 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:31:45,032 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-03-03 17:31:45,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-03-03 17:31:45,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2022-03-03 17:31:45,246 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:31:45,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:31:45,246 INFO L85 PathProgramCache]: Analyzing trace with hash 210372599, now seen corresponding path program 96 times [2022-03-03 17:31:45,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:31:45,246 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635908327] [2022-03-03 17:31:45,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:31:45,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:31:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:31:45,360 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:31:45,360 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:31:45,360 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635908327] [2022-03-03 17:31:45,360 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635908327] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:31:45,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082554888] [2022-03-03 17:31:45,361 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:31:45,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:31:45,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:31:45,362 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:31:45,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-03-03 17:31:45,505 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 17:31:45,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:31:45,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:31:45,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:31:45,746 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:31:45,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:31:45,855 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:31:45,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082554888] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:31:45,855 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:31:45,855 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2022-03-03 17:31:45,855 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414404012] [2022-03-03 17:31:45,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:31:45,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:31:45,856 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:31:45,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:31:45,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:31:45,856 INFO L87 Difference]: Start difference. First operand 318833 states and 948381 transitions. Second operand has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:31:49,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:31:49,795 INFO L93 Difference]: Finished difference Result 335718 states and 996586 transitions. [2022-03-03 17:31:49,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-03 17:31:49,795 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:31:49,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:31:51,288 INFO L225 Difference]: With dead ends: 335718 [2022-03-03 17:31:51,289 INFO L226 Difference]: Without dead ends: 335658 [2022-03-03 17:31:51,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2005 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1100, Invalid=5380, Unknown=0, NotChecked=0, Total=6480 [2022-03-03 17:31:51,289 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 574 mSDsluCounter, 2312 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:31:51,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 2284 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:31:52,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335658 states. [2022-03-03 17:32:01,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335658 to 320049. [2022-03-03 17:32:01,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320049 states, 320048 states have (on average 2.974244488326751) internal successors, (951901), 320048 states have internal predecessors, (951901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:32:04,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320049 states to 320049 states and 951901 transitions. [2022-03-03 17:32:04,020 INFO L78 Accepts]: Start accepts. Automaton has 320049 states and 951901 transitions. Word has length 77 [2022-03-03 17:32:04,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:32:04,020 INFO L470 AbstractCegarLoop]: Abstraction has 320049 states and 951901 transitions. [2022-03-03 17:32:04,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:32:04,020 INFO L276 IsEmpty]: Start isEmpty. Operand 320049 states and 951901 transitions. Received shutdown request... [2022-03-03 17:32:04,203 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 [2022-03-03 17:32:04,204 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 17:32:04,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-03-03 17:32:04,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-03-03 17:32:04,404 WARN L594 AbstractCegarLoop]: Verification canceled: while IsEmpty was searching accepting run (input had 320049 states). [2022-03-03 17:32:04,406 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-03 17:32:04,406 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-03 17:32:04,406 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-03 17:32:04,408 INFO L732 BasicCegarLoop]: Path program histogram: [96, 10, 1, 1] [2022-03-03 17:32:04,409 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-03 17:32:04,409 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-03 17:32:04,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 05:32:04 BasicIcfg [2022-03-03 17:32:04,410 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-03 17:32:04,411 INFO L158 Benchmark]: Toolchain (without parser) took 687099.90ms. Allocated memory was 195.0MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 145.2MB in the beginning and 5.2GB in the end (delta: -5.1GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2022-03-03 17:32:04,411 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 195.0MB. Free memory is still 161.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 17:32:04,411 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.82ms. Allocated memory is still 195.0MB. Free memory was 144.9MB in the beginning and 172.8MB in the end (delta: -27.9MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. [2022-03-03 17:32:04,411 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.80ms. Allocated memory is still 195.0MB. Free memory was 172.8MB in the beginning and 171.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-03 17:32:04,411 INFO L158 Benchmark]: Boogie Preprocessor took 29.68ms. Allocated memory is still 195.0MB. Free memory was 171.2MB in the beginning and 169.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 17:32:04,411 INFO L158 Benchmark]: RCFGBuilder took 251.55ms. Allocated memory is still 195.0MB. Free memory was 169.6MB in the beginning and 156.0MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-03 17:32:04,411 INFO L158 Benchmark]: TraceAbstraction took 686609.98ms. Allocated memory was 195.0MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 155.5MB in the beginning and 5.2GB in the end (delta: -5.1GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2022-03-03 17:32:04,411 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 195.0MB. Free memory is still 161.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 176.82ms. Allocated memory is still 195.0MB. Free memory was 144.9MB in the beginning and 172.8MB in the end (delta: -27.9MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.80ms. Allocated memory is still 195.0MB. Free memory was 172.8MB in the beginning and 171.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.68ms. Allocated memory is still 195.0MB. Free memory was 171.2MB in the beginning and 169.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 251.55ms. Allocated memory is still 195.0MB. Free memory was 169.6MB in the beginning and 156.0MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 686609.98ms. Allocated memory was 195.0MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 155.5MB in the beginning and 5.2GB in the end (delta: -5.1GB). Peak memory consumption was 2.7GB. 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: 73]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while IsEmpty was searching accepting run (input had 320049 states). - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while IsEmpty was searching accepting run (input had 320049 states). - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while IsEmpty was searching accepting run (input had 320049 states). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 93 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 686.5s, OverallIterations: 108, TraceHistogramMax: 3, PathProgramHistogramMax: 96, EmptinessCheckTime: 25.0s, AutomataDifference: 250.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 77256 SdHoareTripleChecker+Valid, 37.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77256 mSDsluCounter, 186982 SdHoareTripleChecker+Invalid, 30.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 193308 mSDsCounter, 9256 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 102974 IncrementalHoareTripleChecker+Invalid, 112230 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9256 mSolverCounterUnsat, 17056 mSDtfsCounter, 102974 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22211 GetRequests, 12857 SyntacticMatches, 102 SemanticMatches, 9252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416911 ImplicationChecksByTransitivity, 93.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=320049occurred in iteration=108, InterpolantAutomatonStates: 8283, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 341.9s AutomataMinimizationTime, 108 MinimizatonAttempts, 1958227 StatesRemovedByMinimization, 107 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 37.2s InterpolantComputationTime, 14556 NumberOfCodeBlocks, 14476 NumberOfCodeBlocksAsserted, 358 NumberOfCheckSat, 21168 ConstructedInterpolants, 0 QuantifiedInterpolants, 47452 SizeOfPredicates, 970 NumberOfNonLiveVariables, 15964 ConjunctsInSsa, 983 ConjunctsInUnsatCore, 298 InterpolantComputations, 13 PerfectInterpolantSequences, 3043/5064 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