/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-figure3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 14:09:55,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 14:09:55,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 14:09:55,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 14:09:55,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 14:09:55,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 14:09:55,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 14:09:56,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 14:09:56,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 14:09:56,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 14:09:56,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 14:09:56,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-03-15 14:09:56,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 14:09:56,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 14:09:56,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 14:09:56,041 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 [2022-03-15 14:09:56,074 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 14:09:56,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 14:09:56,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 14:09:56,075 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 14:09:56,076 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 14:09:56,076 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 14:09:56,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 14:09:56,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 14:09:56,077 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 14:09:56,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 14:09:56,078 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 14:09:56,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 14:09:56,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 14:09:56,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 14:09:56,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 14:09:56,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 14:09:56,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 14:09:56,079 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 14:09:56,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 14:09:56,079 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 14:09:56,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 14:09:56,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 14:09:56,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 14:09:56,079 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 14:09:56,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 14:09:56,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 14:09:56,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 14:09:56,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 14:09:56,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 14:09:56,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 14:09:56,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 14:09:56,081 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 14:09:56,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 14:09:56,082 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 14:09:56,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 14:09:56,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 14:09:56,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 14:09:56,321 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 14:09:56,321 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 14:09:56,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure3.wvr.c [2022-03-15 14:09:56,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83ebe2279/3766300f144e4852a70552eda14e0b8c/FLAGc112c0e85 [2022-03-15 14:09:56,750 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 14:09:56,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure3.wvr.c [2022-03-15 14:09:56,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83ebe2279/3766300f144e4852a70552eda14e0b8c/FLAGc112c0e85 [2022-03-15 14:09:57,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83ebe2279/3766300f144e4852a70552eda14e0b8c [2022-03-15 14:09:57,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 14:09:57,178 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 14:09:57,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 14:09:57,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 14:09:57,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 14:09:57,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 02:09:57" (1/1) ... [2022-03-15 14:09:57,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6676e0f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:09:57, skipping insertion in model container [2022-03-15 14:09:57,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 02:09:57" (1/1) ... [2022-03-15 14:09:57,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 14:09:57,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 14:09:57,352 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-figure3.wvr.c[2121,2134] [2022-03-15 14:09:57,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 14:09:57,360 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 14:09:57,375 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-figure3.wvr.c[2121,2134] [2022-03-15 14:09:57,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 14:09:57,386 INFO L208 MainTranslator]: Completed translation [2022-03-15 14:09:57,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:09:57 WrapperNode [2022-03-15 14:09:57,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 14:09:57,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 14:09:57,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 14:09:57,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 14:09:57,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:09:57" (1/1) ... [2022-03-15 14:09:57,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:09:57" (1/1) ... [2022-03-15 14:09:57,423 INFO L137 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2022-03-15 14:09:57,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 14:09:57,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 14:09:57,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 14:09:57,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 14:09:57,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:09:57" (1/1) ... [2022-03-15 14:09:57,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:09:57" (1/1) ... [2022-03-15 14:09:57,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:09:57" (1/1) ... [2022-03-15 14:09:57,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:09:57" (1/1) ... [2022-03-15 14:09:57,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:09:57" (1/1) ... [2022-03-15 14:09:57,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:09:57" (1/1) ... [2022-03-15 14:09:57,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:09:57" (1/1) ... [2022-03-15 14:09:57,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 14:09:57,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 14:09:57,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 14:09:57,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 14:09:57,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:09:57" (1/1) ... [2022-03-15 14:09:57,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 14:09:57,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:09:57,472 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) [2022-03-15 14:09:57,474 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 [2022-03-15 14:09:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 14:09:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 14:09:57,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 14:09:57,511 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 14:09:57,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 14:09:57,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 14:09:57,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 14:09:57,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 14:09:57,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 14:09:57,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 14:09:57,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 14:09:57,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 14:09:57,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 14:09:57,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 14:09:57,516 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 14:09:57,575 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 14:09:57,576 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 14:09:57,700 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 14:09:57,743 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 14:09:57,743 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-15 14:09:57,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 02:09:57 BoogieIcfgContainer [2022-03-15 14:09:57,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 14:09:57,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 14:09:57,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 14:09:57,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 14:09:57,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 02:09:57" (1/3) ... [2022-03-15 14:09:57,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d05c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 02:09:57, skipping insertion in model container [2022-03-15 14:09:57,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:09:57" (2/3) ... [2022-03-15 14:09:57,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d05c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 02:09:57, skipping insertion in model container [2022-03-15 14:09:57,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 02:09:57" (3/3) ... [2022-03-15 14:09:57,758 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-figure3.wvr.c [2022-03-15 14:09:57,762 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 14:09:57,762 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 14:09:57,762 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 14:09:57,762 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 14:09:57,800 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,800 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,801 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,801 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,802 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,802 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,802 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,803 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,803 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,803 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,803 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,803 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,804 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,804 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,804 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,804 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,804 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,804 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,805 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,805 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,805 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,805 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,806 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,806 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,807 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,807 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,807 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,808 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,808 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,808 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,808 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,808 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,810 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,810 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,810 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,810 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,810 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,810 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,811 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,811 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,811 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,828 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,828 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,828 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,828 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,829 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,830 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,830 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,830 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,830 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,830 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:09:57,834 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-15 14:09:57,888 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 14:09:57,897 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 [2022-03-15 14:09:57,898 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 14:09:57,916 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 88 places, 87 transitions, 190 flow [2022-03-15 14:09:57,986 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 447 states, 446 states have (on average 2.6412556053811658) internal successors, (1178), 446 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:57,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 447 states, 446 states have (on average 2.6412556053811658) internal successors, (1178), 446 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:58,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-15 14:09:58,003 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:09:58,003 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] [2022-03-15 14:09:58,004 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:09:58,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:09:58,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1942784834, now seen corresponding path program 1 times [2022-03-15 14:09:58,018 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:09:58,019 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054500098] [2022-03-15 14:09:58,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:09:58,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:09:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:09:58,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:09:58,188 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:09:58,188 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054500098] [2022-03-15 14:09:58,189 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054500098] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:09:58,189 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:09:58,190 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 14:09:58,191 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604281965] [2022-03-15 14:09:58,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:09:58,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-15 14:09:58,196 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:09:58,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-15 14:09:58,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 14:09:58,226 INFO L87 Difference]: Start difference. First operand has 447 states, 446 states have (on average 2.6412556053811658) internal successors, (1178), 446 states have internal predecessors, (1178), 0 states have call successors, (0), 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 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:58,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:09:58,261 INFO L93 Difference]: Finished difference Result 447 states and 1095 transitions. [2022-03-15 14:09:58,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-15 14:09:58,263 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-03-15 14:09:58,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:09:58,276 INFO L225 Difference]: With dead ends: 447 [2022-03-15 14:09:58,276 INFO L226 Difference]: Without dead ends: 445 [2022-03-15 14:09:58,278 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 [2022-03-15 14:09:58,282 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:09:58,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:09:58,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-03-15 14:09:58,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2022-03-15 14:09:58,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.4617117117117115) internal successors, (1093), 444 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:58,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1093 transitions. [2022-03-15 14:09:58,347 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1093 transitions. Word has length 60 [2022-03-15 14:09:58,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:09:58,348 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 1093 transitions. [2022-03-15 14:09:58,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:58,348 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1093 transitions. [2022-03-15 14:09:58,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-15 14:09:58,352 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:09:58,352 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] [2022-03-15 14:09:58,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 14:09:58,352 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:09:58,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:09:58,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1057361610, now seen corresponding path program 1 times [2022-03-15 14:09:58,353 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:09:58,353 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603513239] [2022-03-15 14:09:58,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:09:58,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:09:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:09:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:09:58,526 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:09:58,526 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603513239] [2022-03-15 14:09:58,526 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603513239] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:09:58,526 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:09:58,526 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:09:58,526 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646993011] [2022-03-15 14:09:58,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:09:58,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:09:58,528 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:09:58,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:09:58,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:09:58,529 INFO L87 Difference]: Start difference. First operand 445 states and 1093 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:58,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:09:58,588 INFO L93 Difference]: Finished difference Result 607 states and 1465 transitions. [2022-03-15 14:09:58,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 14:09:58,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-03-15 14:09:58,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:09:58,596 INFO L225 Difference]: With dead ends: 607 [2022-03-15 14:09:58,596 INFO L226 Difference]: Without dead ends: 493 [2022-03-15 14:09:58,598 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 [2022-03-15 14:09:58,599 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 6 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:09:58,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 220 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:09:58,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-03-15 14:09:58,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 481. [2022-03-15 14:09:58,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 2.4479166666666665) internal successors, (1175), 480 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:58,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 1175 transitions. [2022-03-15 14:09:58,637 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 1175 transitions. Word has length 60 [2022-03-15 14:09:58,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:09:58,639 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 1175 transitions. [2022-03-15 14:09:58,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:58,639 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 1175 transitions. [2022-03-15 14:09:58,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-15 14:09:58,641 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:09:58,641 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, 1, 1, 1] [2022-03-15 14:09:58,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 14:09:58,642 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:09:58,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:09:58,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1205009006, now seen corresponding path program 1 times [2022-03-15 14:09:58,642 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:09:58,642 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373697879] [2022-03-15 14:09:58,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:09:58,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:09:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:09:58,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:09:58,887 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:09:58,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373697879] [2022-03-15 14:09:58,888 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373697879] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:09:58,888 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:09:58,888 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:09:58,889 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459756581] [2022-03-15 14:09:58,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:09:58,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:09:58,889 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:09:58,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:09:58,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:09:58,890 INFO L87 Difference]: Start difference. First operand 481 states and 1175 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:58,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:09:58,942 INFO L93 Difference]: Finished difference Result 673 states and 1670 transitions. [2022-03-15 14:09:58,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 14:09:58,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-03-15 14:09:58,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:09:58,947 INFO L225 Difference]: With dead ends: 673 [2022-03-15 14:09:58,947 INFO L226 Difference]: Without dead ends: 661 [2022-03-15 14:09:58,947 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 [2022-03-15 14:09:58,948 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 38 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:09:58,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 173 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:09:58,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-03-15 14:09:58,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 485. [2022-03-15 14:09:58,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 2.450413223140496) internal successors, (1186), 484 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:58,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1186 transitions. [2022-03-15 14:09:58,968 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1186 transitions. Word has length 65 [2022-03-15 14:09:58,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:09:58,968 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 1186 transitions. [2022-03-15 14:09:58,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:58,969 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1186 transitions. [2022-03-15 14:09:58,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-15 14:09:58,971 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:09:58,978 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, 1, 1, 1] [2022-03-15 14:09:58,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 14:09:58,978 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:09:58,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:09:58,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1184291620, now seen corresponding path program 2 times [2022-03-15 14:09:58,979 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:09:58,979 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788887328] [2022-03-15 14:09:58,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:09:58,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:09:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:09:59,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:09:59,152 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:09:59,152 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788887328] [2022-03-15 14:09:59,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788887328] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:09:59,153 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:09:59,153 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:09:59,153 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206989544] [2022-03-15 14:09:59,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:09:59,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:09:59,154 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:09:59,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:09:59,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:09:59,156 INFO L87 Difference]: Start difference. First operand 485 states and 1186 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:59,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:09:59,221 INFO L93 Difference]: Finished difference Result 673 states and 1682 transitions. [2022-03-15 14:09:59,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 14:09:59,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-03-15 14:09:59,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:09:59,232 INFO L225 Difference]: With dead ends: 673 [2022-03-15 14:09:59,232 INFO L226 Difference]: Without dead ends: 673 [2022-03-15 14:09:59,232 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 [2022-03-15 14:09:59,241 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 36 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:09:59,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 215 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:09:59,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-03-15 14:09:59,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 497. [2022-03-15 14:09:59,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 2.4576612903225805) internal successors, (1219), 496 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:59,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 1219 transitions. [2022-03-15 14:09:59,260 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 1219 transitions. Word has length 65 [2022-03-15 14:09:59,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:09:59,262 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 1219 transitions. [2022-03-15 14:09:59,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:59,262 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 1219 transitions. [2022-03-15 14:09:59,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-15 14:09:59,266 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:09:59,267 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, 1, 1, 1] [2022-03-15 14:09:59,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 14:09:59,267 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:09:59,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:09:59,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1828792382, now seen corresponding path program 3 times [2022-03-15 14:09:59,270 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:09:59,270 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499714851] [2022-03-15 14:09:59,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:09:59,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:09:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:09:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:09:59,433 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:09:59,433 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499714851] [2022-03-15 14:09:59,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499714851] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:09:59,434 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:09:59,434 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 14:09:59,435 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901512587] [2022-03-15 14:09:59,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:09:59,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 14:09:59,436 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:09:59,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 14:09:59,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-15 14:09:59,436 INFO L87 Difference]: Start difference. First operand 497 states and 1219 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:59,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:09:59,499 INFO L93 Difference]: Finished difference Result 813 states and 2058 transitions. [2022-03-15 14:09:59,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 14:09:59,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-03-15 14:09:59,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:09:59,505 INFO L225 Difference]: With dead ends: 813 [2022-03-15 14:09:59,505 INFO L226 Difference]: Without dead ends: 813 [2022-03-15 14:09:59,505 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 [2022-03-15 14:09:59,508 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 59 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:09:59,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 241 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:09:59,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-03-15 14:09:59,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 524. [2022-03-15 14:09:59,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 2.4684512428298278) internal successors, (1291), 523 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:59,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1291 transitions. [2022-03-15 14:09:59,525 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1291 transitions. Word has length 65 [2022-03-15 14:09:59,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:09:59,525 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1291 transitions. [2022-03-15 14:09:59,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:59,525 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1291 transitions. [2022-03-15 14:09:59,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-15 14:09:59,527 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:09:59,527 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, 1, 1, 1] [2022-03-15 14:09:59,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-15 14:09:59,527 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:09:59,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:09:59,528 INFO L85 PathProgramCache]: Analyzing trace with hash 780130990, now seen corresponding path program 4 times [2022-03-15 14:09:59,528 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:09:59,529 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759897516] [2022-03-15 14:09:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:09:59,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:09:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:09:59,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:09:59,666 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:09:59,666 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759897516] [2022-03-15 14:09:59,666 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759897516] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:09:59,666 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:09:59,666 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:09:59,666 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098360427] [2022-03-15 14:09:59,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:09:59,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:09:59,667 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:09:59,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:09:59,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:09:59,668 INFO L87 Difference]: Start difference. First operand 524 states and 1291 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:59,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:09:59,711 INFO L93 Difference]: Finished difference Result 672 states and 1677 transitions. [2022-03-15 14:09:59,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 14:09:59,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-03-15 14:09:59,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:09:59,717 INFO L225 Difference]: With dead ends: 672 [2022-03-15 14:09:59,717 INFO L226 Difference]: Without dead ends: 672 [2022-03-15 14:09:59,717 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 [2022-03-15 14:09:59,719 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 41 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:09:59,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 176 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:09:59,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-03-15 14:09:59,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 556. [2022-03-15 14:09:59,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 2.4684684684684686) internal successors, (1370), 555 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:59,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1370 transitions. [2022-03-15 14:09:59,737 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1370 transitions. Word has length 65 [2022-03-15 14:09:59,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:09:59,737 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1370 transitions. [2022-03-15 14:09:59,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:59,738 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1370 transitions. [2022-03-15 14:09:59,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-15 14:09:59,739 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:09:59,739 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, 1, 1, 1] [2022-03-15 14:09:59,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-15 14:09:59,740 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:09:59,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:09:59,741 INFO L85 PathProgramCache]: Analyzing trace with hash 135630228, now seen corresponding path program 5 times [2022-03-15 14:09:59,741 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:09:59,741 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987601644] [2022-03-15 14:09:59,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:09:59,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:09:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:09:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:09:59,865 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:09:59,865 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987601644] [2022-03-15 14:09:59,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987601644] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:09:59,866 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:09:59,866 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 14:09:59,866 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433771670] [2022-03-15 14:09:59,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:09:59,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 14:09:59,866 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:09:59,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 14:09:59,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-15 14:09:59,867 INFO L87 Difference]: Start difference. First operand 556 states and 1370 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:59,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:09:59,959 INFO L93 Difference]: Finished difference Result 812 states and 2053 transitions. [2022-03-15 14:09:59,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 14:09:59,960 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-03-15 14:09:59,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:09:59,963 INFO L225 Difference]: With dead ends: 812 [2022-03-15 14:09:59,963 INFO L226 Difference]: Without dead ends: 812 [2022-03-15 14:09:59,964 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 [2022-03-15 14:09:59,965 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 56 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:09:59,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 336 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:09:59,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-03-15 14:09:59,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 544. [2022-03-15 14:09:59,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 543 states have (on average 2.4622467771639043) internal successors, (1337), 543 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:59,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 1337 transitions. [2022-03-15 14:09:59,980 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 1337 transitions. Word has length 65 [2022-03-15 14:09:59,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:09:59,980 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 1337 transitions. [2022-03-15 14:09:59,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:09:59,981 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 1337 transitions. [2022-03-15 14:09:59,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-15 14:09:59,982 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:09:59,982 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, 1, 1, 1] [2022-03-15 14:09:59,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-15 14:09:59,982 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:09:59,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:09:59,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1678651950, now seen corresponding path program 6 times [2022-03-15 14:09:59,983 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:09:59,983 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472790015] [2022-03-15 14:09:59,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:09:59,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:00,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:00,092 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:00,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472790015] [2022-03-15 14:10:00,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472790015] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:10:00,092 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:10:00,092 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 14:10:00,092 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464670617] [2022-03-15 14:10:00,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:10:00,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 14:10:00,093 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:00,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 14:10:00,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-15 14:10:00,093 INFO L87 Difference]: Start difference. First operand 544 states and 1337 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:00,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:00,189 INFO L93 Difference]: Finished difference Result 843 states and 2140 transitions. [2022-03-15 14:10:00,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 14:10:00,190 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-03-15 14:10:00,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:00,194 INFO L225 Difference]: With dead ends: 843 [2022-03-15 14:10:00,194 INFO L226 Difference]: Without dead ends: 843 [2022-03-15 14:10:00,194 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 [2022-03-15 14:10:00,195 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 88 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:00,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 345 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:10:00,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-03-15 14:10:00,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 524. [2022-03-15 14:10:00,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 2.4684512428298278) internal successors, (1291), 523 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:00,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1291 transitions. [2022-03-15 14:10:00,210 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1291 transitions. Word has length 65 [2022-03-15 14:10:00,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:00,210 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1291 transitions. [2022-03-15 14:10:00,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:00,211 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1291 transitions. [2022-03-15 14:10:00,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-15 14:10:00,212 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:00,212 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, 1, 1, 1] [2022-03-15 14:10:00,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-15 14:10:00,213 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:00,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:00,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1844803496, now seen corresponding path program 7 times [2022-03-15 14:10:00,213 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:00,213 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371486824] [2022-03-15 14:10:00,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:00,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:00,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:00,265 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:00,265 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371486824] [2022-03-15 14:10:00,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371486824] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:10:00,265 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:10:00,265 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:10:00,266 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043296936] [2022-03-15 14:10:00,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:10:00,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:10:00,266 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:00,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:10:00,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:10:00,267 INFO L87 Difference]: Start difference. First operand 524 states and 1291 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:00,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:00,318 INFO L93 Difference]: Finished difference Result 790 states and 1951 transitions. [2022-03-15 14:10:00,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 14:10:00,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-03-15 14:10:00,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:00,322 INFO L225 Difference]: With dead ends: 790 [2022-03-15 14:10:00,322 INFO L226 Difference]: Without dead ends: 754 [2022-03-15 14:10:00,323 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 [2022-03-15 14:10:00,323 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 63 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:00,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 242 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:10:00,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-03-15 14:10:00,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 580. [2022-03-15 14:10:00,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 2.5025906735751295) internal successors, (1449), 579 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:00,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1449 transitions. [2022-03-15 14:10:00,339 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1449 transitions. Word has length 65 [2022-03-15 14:10:00,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:00,339 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 1449 transitions. [2022-03-15 14:10:00,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:00,340 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1449 transitions. [2022-03-15 14:10:00,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-15 14:10:00,341 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:00,341 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, 1, 1, 1] [2022-03-15 14:10:00,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-15 14:10:00,342 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:00,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:00,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1977551010, now seen corresponding path program 8 times [2022-03-15 14:10:00,342 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:00,342 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483716265] [2022-03-15 14:10:00,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:00,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:00,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:00,400 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:00,400 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483716265] [2022-03-15 14:10:00,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483716265] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:10:00,400 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:10:00,400 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:10:00,400 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014619362] [2022-03-15 14:10:00,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:10:00,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:10:00,401 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:00,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:10:00,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:10:00,401 INFO L87 Difference]: Start difference. First operand 580 states and 1449 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:00,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:00,450 INFO L93 Difference]: Finished difference Result 798 states and 1985 transitions. [2022-03-15 14:10:00,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 14:10:00,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-03-15 14:10:00,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:00,454 INFO L225 Difference]: With dead ends: 798 [2022-03-15 14:10:00,454 INFO L226 Difference]: Without dead ends: 798 [2022-03-15 14:10:00,454 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 [2022-03-15 14:10:00,455 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 43 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:00,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 212 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:10:00,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-03-15 14:10:00,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 588. [2022-03-15 14:10:00,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 587 states have (on average 2.4991482112436114) internal successors, (1467), 587 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:00,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1467 transitions. [2022-03-15 14:10:00,471 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1467 transitions. Word has length 65 [2022-03-15 14:10:00,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:00,471 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1467 transitions. [2022-03-15 14:10:00,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:00,472 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1467 transitions. [2022-03-15 14:10:00,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-15 14:10:00,473 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:00,474 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, 1, 1, 1] [2022-03-15 14:10:00,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-15 14:10:00,474 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:00,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:00,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1672915524, now seen corresponding path program 9 times [2022-03-15 14:10:00,475 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:00,475 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612332703] [2022-03-15 14:10:00,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:00,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:00,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:00,565 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:00,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612332703] [2022-03-15 14:10:00,566 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612332703] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:10:00,566 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:10:00,566 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 14:10:00,566 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18300203] [2022-03-15 14:10:00,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:10:00,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 14:10:00,566 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:00,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 14:10:00,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-15 14:10:00,567 INFO L87 Difference]: Start difference. First operand 588 states and 1467 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:00,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:00,626 INFO L93 Difference]: Finished difference Result 719 states and 1804 transitions. [2022-03-15 14:10:00,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 14:10:00,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-03-15 14:10:00,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:00,630 INFO L225 Difference]: With dead ends: 719 [2022-03-15 14:10:00,630 INFO L226 Difference]: Without dead ends: 719 [2022-03-15 14:10:00,630 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 [2022-03-15 14:10:00,631 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 41 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:00,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 290 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:10:00,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-03-15 14:10:00,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 492. [2022-03-15 14:10:00,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 2.441955193482688) internal successors, (1199), 491 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:00,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1199 transitions. [2022-03-15 14:10:00,644 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1199 transitions. Word has length 65 [2022-03-15 14:10:00,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:00,644 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 1199 transitions. [2022-03-15 14:10:00,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:00,645 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1199 transitions. [2022-03-15 14:10:00,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:10:00,646 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:00,646 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:10:00,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-15 14:10:00,646 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:00,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:00,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1959986980, now seen corresponding path program 1 times [2022-03-15 14:10:00,647 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:00,647 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626909256] [2022-03-15 14:10:00,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:00,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:00,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:00,773 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:00,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626909256] [2022-03-15 14:10:00,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626909256] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:10:00,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257132043] [2022-03-15 14:10:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:00,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:00,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:10:00,783 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) [2022-03-15 14:10:00,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 14:10:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:00,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-15 14:10:00,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:10:01,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:10:01,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:10:01,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257132043] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:10:01,160 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:10:01,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 7 [2022-03-15 14:10:01,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908734359] [2022-03-15 14:10:01,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:10:01,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 14:10:01,160 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:01,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 14:10:01,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-15 14:10:01,161 INFO L87 Difference]: Start difference. First operand 492 states and 1199 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:01,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:01,235 INFO L93 Difference]: Finished difference Result 1185 states and 2967 transitions. [2022-03-15 14:10:01,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 14:10:01,236 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:10:01,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:01,241 INFO L225 Difference]: With dead ends: 1185 [2022-03-15 14:10:01,241 INFO L226 Difference]: Without dead ends: 996 [2022-03-15 14:10:01,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-03-15 14:10:01,242 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 48 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:01,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 359 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:10:01,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2022-03-15 14:10:01,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 862. [2022-03-15 14:10:01,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 2.5516840882694543) internal successors, (2197), 861 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:01,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 2197 transitions. [2022-03-15 14:10:01,264 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 2197 transitions. Word has length 70 [2022-03-15 14:10:01,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:01,264 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 2197 transitions. [2022-03-15 14:10:01,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:01,264 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 2197 transitions. [2022-03-15 14:10:01,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:10:01,266 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:01,267 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:10:01,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-15 14:10:01,489 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,SelfDestructingSolverStorable11 [2022-03-15 14:10:01,489 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:01,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:01,490 INFO L85 PathProgramCache]: Analyzing trace with hash 864971766, now seen corresponding path program 2 times [2022-03-15 14:10:01,490 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:01,490 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673714613] [2022-03-15 14:10:01,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:01,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:01,672 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:01,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673714613] [2022-03-15 14:10:01,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673714613] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:10:01,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665863939] [2022-03-15 14:10:01,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:10:01,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:01,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:10:01,674 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) [2022-03-15 14:10:01,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 14:10:01,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:10:01,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:10:01,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:10:01,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:10:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:01,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:10:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:02,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665863939] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:10:02,267 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:10:02,267 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:10:02,267 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647881304] [2022-03-15 14:10:02,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:10:02,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:10:02,268 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:02,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:10:02,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:10:02,268 INFO L87 Difference]: Start difference. First operand 862 states and 2197 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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) [2022-03-15 14:10:05,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:05,363 INFO L93 Difference]: Finished difference Result 3702 states and 9759 transitions. [2022-03-15 14:10:05,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-15 14:10:05,364 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 75 [2022-03-15 14:10:05,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:05,381 INFO L225 Difference]: With dead ends: 3702 [2022-03-15 14:10:05,381 INFO L226 Difference]: Without dead ends: 3654 [2022-03-15 14:10:05,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=993, Invalid=5169, Unknown=0, NotChecked=0, Total=6162 [2022-03-15 14:10:05,383 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 649 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:05,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 1510 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:10:05,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2022-03-15 14:10:05,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 1578. [2022-03-15 14:10:05,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1577 states have (on average 2.7228915662650603) internal successors, (4294), 1577 states have internal predecessors, (4294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:05,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 4294 transitions. [2022-03-15 14:10:05,452 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 4294 transitions. Word has length 75 [2022-03-15 14:10:05,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:05,452 INFO L470 AbstractCegarLoop]: Abstraction has 1578 states and 4294 transitions. [2022-03-15 14:10:05,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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) [2022-03-15 14:10:05,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 4294 transitions. [2022-03-15 14:10:05,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:10:05,456 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:05,456 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:10:05,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-15 14:10:05,671 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,SelfDestructingSolverStorable12 [2022-03-15 14:10:05,671 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:05,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:05,672 INFO L85 PathProgramCache]: Analyzing trace with hash 885689152, now seen corresponding path program 3 times [2022-03-15 14:10:05,672 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:05,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275666602] [2022-03-15 14:10:05,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:05,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:05,822 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:05,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275666602] [2022-03-15 14:10:05,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275666602] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:10:05,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221161823] [2022-03-15 14:10:05,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:10:05,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:05,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:10:05,824 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) [2022-03-15 14:10:05,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 14:10:05,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:10:05,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:10:05,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:10:05,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:10:06,136 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:06,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:10:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:06,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221161823] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:10:06,396 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:10:06,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-03-15 14:10:06,399 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437347243] [2022-03-15 14:10:06,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:10:06,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:10:06,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:06,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:10:06,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:10:06,400 INFO L87 Difference]: Start difference. First operand 1578 states and 4294 transitions. Second operand has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 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) [2022-03-15 14:10:10,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:10,436 INFO L93 Difference]: Finished difference Result 4718 states and 12452 transitions. [2022-03-15 14:10:10,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-03-15 14:10:10,437 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 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 75 [2022-03-15 14:10:10,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:10,475 INFO L225 Difference]: With dead ends: 4718 [2022-03-15 14:10:10,475 INFO L226 Difference]: Without dead ends: 4658 [2022-03-15 14:10:10,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3570 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1817, Invalid=8083, Unknown=0, NotChecked=0, Total=9900 [2022-03-15 14:10:10,478 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 878 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 1921 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:10,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [878 Valid, 1921 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:10:10,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2022-03-15 14:10:10,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 1633. [2022-03-15 14:10:10,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1632 states have (on average 2.7150735294117645) internal successors, (4431), 1632 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:10,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 4431 transitions. [2022-03-15 14:10:10,536 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 4431 transitions. Word has length 75 [2022-03-15 14:10:10,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:10,537 INFO L470 AbstractCegarLoop]: Abstraction has 1633 states and 4431 transitions. [2022-03-15 14:10:10,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 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) [2022-03-15 14:10:10,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 4431 transitions. [2022-03-15 14:10:10,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:10:10,541 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:10,541 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:10:10,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-15 14:10:10,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:10,756 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:10,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:10,756 INFO L85 PathProgramCache]: Analyzing trace with hash 487460194, now seen corresponding path program 4 times [2022-03-15 14:10:10,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:10,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269688463] [2022-03-15 14:10:10,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:10,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:10,901 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:10,901 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:10,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269688463] [2022-03-15 14:10:10,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269688463] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:10:10,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825456679] [2022-03-15 14:10:10,902 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:10:10,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:10,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:10:10,904 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) [2022-03-15 14:10:10,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 14:10:10,959 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:10:10,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:10:10,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:10:10,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:10:11,195 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:11,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:10:11,426 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:11,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825456679] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:10:11,426 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:10:11,426 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:10:11,426 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793829721] [2022-03-15 14:10:11,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:10:11,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:10:11,427 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:11,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:10:11,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:10:11,428 INFO L87 Difference]: Start difference. First operand 1633 states and 4431 transitions. Second operand has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 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) [2022-03-15 14:10:15,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:15,860 INFO L93 Difference]: Finished difference Result 5290 states and 14311 transitions. [2022-03-15 14:10:15,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-03-15 14:10:15,861 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 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 75 [2022-03-15 14:10:15,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:15,873 INFO L225 Difference]: With dead ends: 5290 [2022-03-15 14:10:15,873 INFO L226 Difference]: Without dead ends: 5125 [2022-03-15 14:10:15,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6103 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2438, Invalid=13818, Unknown=0, NotChecked=0, Total=16256 [2022-03-15 14:10:15,878 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 866 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:15,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [866 Valid, 1834 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:10:15,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5125 states. [2022-03-15 14:10:15,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5125 to 2188. [2022-03-15 14:10:15,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 2187 states have (on average 2.763145861911294) internal successors, (6043), 2187 states have internal predecessors, (6043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:15,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 6043 transitions. [2022-03-15 14:10:15,948 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 6043 transitions. Word has length 75 [2022-03-15 14:10:15,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:15,949 INFO L470 AbstractCegarLoop]: Abstraction has 2188 states and 6043 transitions. [2022-03-15 14:10:15,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 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) [2022-03-15 14:10:15,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 6043 transitions. [2022-03-15 14:10:15,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:10:15,954 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:15,954 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:10:15,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 14:10:16,167 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,SelfDestructingSolverStorable14 [2022-03-15 14:10:16,168 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:16,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:16,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1037023166, now seen corresponding path program 5 times [2022-03-15 14:10:16,168 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:16,168 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882502291] [2022-03-15 14:10:16,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:16,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:16,312 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:16,312 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:16,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882502291] [2022-03-15 14:10:16,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882502291] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:10:16,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747733861] [2022-03-15 14:10:16,312 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:10:16,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:16,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:10:16,316 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) [2022-03-15 14:10:16,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 14:10:16,381 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:10:16,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:10:16,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:10:16,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:10:16,592 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:16,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:10:16,828 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:16,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747733861] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:10:16,829 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:10:16,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:10:16,829 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985686050] [2022-03-15 14:10:16,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:10:16,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:10:16,829 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:16,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:10:16,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:10:16,830 INFO L87 Difference]: Start difference. First operand 2188 states and 6043 transitions. Second operand has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 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) [2022-03-15 14:10:19,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:19,390 INFO L93 Difference]: Finished difference Result 6064 states and 16644 transitions. [2022-03-15 14:10:19,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-15 14:10:19,391 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 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 75 [2022-03-15 14:10:19,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:19,403 INFO L225 Difference]: With dead ends: 6064 [2022-03-15 14:10:19,404 INFO L226 Difference]: Without dead ends: 5884 [2022-03-15 14:10:19,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2306 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1258, Invalid=6052, Unknown=0, NotChecked=0, Total=7310 [2022-03-15 14:10:19,406 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 524 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:19,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 1817 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:10:19,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-03-15 14:10:19,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 2812. [2022-03-15 14:10:19,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2812 states, 2811 states have (on average 2.7812166488794023) internal successors, (7818), 2811 states have internal predecessors, (7818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:19,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 7818 transitions. [2022-03-15 14:10:19,487 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 7818 transitions. Word has length 75 [2022-03-15 14:10:19,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:19,487 INFO L470 AbstractCegarLoop]: Abstraction has 2812 states and 7818 transitions. [2022-03-15 14:10:19,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 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) [2022-03-15 14:10:19,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 7818 transitions. [2022-03-15 14:10:19,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:10:19,494 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:19,494 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:10:19,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-15 14:10:19,707 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,SelfDestructingSolverStorable15 [2022-03-15 14:10:19,707 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:19,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:19,708 INFO L85 PathProgramCache]: Analyzing trace with hash 994302006, now seen corresponding path program 6 times [2022-03-15 14:10:19,708 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:19,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060949931] [2022-03-15 14:10:19,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:19,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:19,803 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:19,803 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:19,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060949931] [2022-03-15 14:10:19,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060949931] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:10:19,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362257980] [2022-03-15 14:10:19,803 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:10:19,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:19,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:10:19,805 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) [2022-03-15 14:10:19,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 14:10:19,869 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:10:19,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:10:19,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:10:19,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:10:20,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:20,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:10:20,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:20,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362257980] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:10:20,248 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:10:20,248 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 14:10:20,248 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178026342] [2022-03-15 14:10:20,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:10:20,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:10:20,248 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:20,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:10:20,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:10:20,249 INFO L87 Difference]: Start difference. First operand 2812 states and 7818 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:22,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:22,340 INFO L93 Difference]: Finished difference Result 6577 states and 18166 transitions. [2022-03-15 14:10:22,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-15 14:10:22,340 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-15 14:10:22,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:22,356 INFO L225 Difference]: With dead ends: 6577 [2022-03-15 14:10:22,356 INFO L226 Difference]: Without dead ends: 6529 [2022-03-15 14:10:22,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2359 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1048, Invalid=5758, Unknown=0, NotChecked=0, Total=6806 [2022-03-15 14:10:22,358 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 478 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:22,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 1536 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:10:22,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6529 states. [2022-03-15 14:10:22,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6529 to 4004. [2022-03-15 14:10:22,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4004 states, 4003 states have (on average 2.8258805895578316) internal successors, (11312), 4003 states have internal predecessors, (11312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:22,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 11312 transitions. [2022-03-15 14:10:22,483 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 11312 transitions. Word has length 75 [2022-03-15 14:10:22,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:22,483 INFO L470 AbstractCegarLoop]: Abstraction has 4004 states and 11312 transitions. [2022-03-15 14:10:22,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:22,484 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 11312 transitions. [2022-03-15 14:10:22,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:10:22,493 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:22,493 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:10:22,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-15 14:10:22,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-15 14:10:22,717 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:22,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:22,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1015019392, now seen corresponding path program 7 times [2022-03-15 14:10:22,717 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:22,717 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320592884] [2022-03-15 14:10:22,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:22,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:22,831 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:22,832 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:22,832 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320592884] [2022-03-15 14:10:22,832 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320592884] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:10:22,832 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654057365] [2022-03-15 14:10:22,832 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:10:22,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:22,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:10:22,834 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) [2022-03-15 14:10:22,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 14:10:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:22,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:10:22,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:10:23,098 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:23,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:10:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:23,314 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654057365] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:10:23,314 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:10:23,315 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:10:23,315 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686480734] [2022-03-15 14:10:23,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:10:23,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:10:23,315 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:23,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:10:23,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:10:23,316 INFO L87 Difference]: Start difference. First operand 4004 states and 11312 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:26,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:26,686 INFO L93 Difference]: Finished difference Result 7727 states and 21227 transitions. [2022-03-15 14:10:26,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-03-15 14:10:26,687 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-15 14:10:26,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:26,703 INFO L225 Difference]: With dead ends: 7727 [2022-03-15 14:10:26,703 INFO L226 Difference]: Without dead ends: 7667 [2022-03-15 14:10:26,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4567 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2049, Invalid=10161, Unknown=0, NotChecked=0, Total=12210 [2022-03-15 14:10:26,706 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 812 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:26,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 1704 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:10:26,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7667 states. [2022-03-15 14:10:26,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7667 to 4036. [2022-03-15 14:10:26,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4036 states, 4035 states have (on average 2.825278810408922) internal successors, (11400), 4035 states have internal predecessors, (11400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:26,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4036 states to 4036 states and 11400 transitions. [2022-03-15 14:10:26,812 INFO L78 Accepts]: Start accepts. Automaton has 4036 states and 11400 transitions. Word has length 75 [2022-03-15 14:10:26,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:26,812 INFO L470 AbstractCegarLoop]: Abstraction has 4036 states and 11400 transitions. [2022-03-15 14:10:26,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:26,813 INFO L276 IsEmpty]: Start isEmpty. Operand 4036 states and 11400 transitions. [2022-03-15 14:10:26,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:10:26,822 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:26,822 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:10:26,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-15 14:10:27,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:27,044 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:27,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:27,044 INFO L85 PathProgramCache]: Analyzing trace with hash 616790434, now seen corresponding path program 8 times [2022-03-15 14:10:27,044 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:27,044 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260657559] [2022-03-15 14:10:27,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:27,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:27,154 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:27,155 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:27,155 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260657559] [2022-03-15 14:10:27,155 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260657559] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:10:27,155 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892209050] [2022-03-15 14:10:27,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:10:27,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:27,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:10:27,160 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) [2022-03-15 14:10:27,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 14:10:27,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:10:27,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:10:27,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:10:27,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:10:27,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:27,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:10:27,640 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:27,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892209050] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:10:27,640 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:10:27,641 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 14:10:27,641 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949914796] [2022-03-15 14:10:27,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:10:27,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:10:27,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:27,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:10:27,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:10:27,642 INFO L87 Difference]: Start difference. First operand 4036 states and 11400 transitions. Second operand has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:30,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:30,078 INFO L93 Difference]: Finished difference Result 7437 states and 20688 transitions. [2022-03-15 14:10:30,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-03-15 14:10:30,078 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-15 14:10:30,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:30,088 INFO L225 Difference]: With dead ends: 7437 [2022-03-15 14:10:30,088 INFO L226 Difference]: Without dead ends: 7332 [2022-03-15 14:10:30,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4055 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1699, Invalid=9431, Unknown=0, NotChecked=0, Total=11130 [2022-03-15 14:10:30,090 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 628 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:30,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 1387 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:10:30,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7332 states. [2022-03-15 14:10:30,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7332 to 4376. [2022-03-15 14:10:30,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4375 states have (on average 2.824) internal successors, (12355), 4375 states have internal predecessors, (12355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:30,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 12355 transitions. [2022-03-15 14:10:30,188 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 12355 transitions. Word has length 75 [2022-03-15 14:10:30,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:30,188 INFO L470 AbstractCegarLoop]: Abstraction has 4376 states and 12355 transitions. [2022-03-15 14:10:30,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:30,189 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 12355 transitions. [2022-03-15 14:10:30,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:10:30,199 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:30,199 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:10:30,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-15 14:10:30,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:30,419 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:30,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:30,419 INFO L85 PathProgramCache]: Analyzing trace with hash -790464616, now seen corresponding path program 9 times [2022-03-15 14:10:30,419 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:30,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147481632] [2022-03-15 14:10:30,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:30,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:30,525 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:30,525 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:30,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147481632] [2022-03-15 14:10:30,525 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147481632] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:10:30,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240259813] [2022-03-15 14:10:30,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:10:30,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:30,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:10:30,528 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) [2022-03-15 14:10:30,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 14:10:30,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:10:30,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:10:30,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:10:30,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:10:30,736 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:30,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:10:30,920 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:30,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240259813] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:10:30,921 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:10:30,921 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 14:10:30,921 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496710752] [2022-03-15 14:10:30,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:10:30,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:10:30,921 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:30,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:10:30,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:10:30,922 INFO L87 Difference]: Start difference. First operand 4376 states and 12355 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:32,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:32,208 INFO L93 Difference]: Finished difference Result 7236 states and 20083 transitions. [2022-03-15 14:10:32,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-15 14:10:32,208 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-15 14:10:32,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:32,223 INFO L225 Difference]: With dead ends: 7236 [2022-03-15 14:10:32,223 INFO L226 Difference]: Without dead ends: 7188 [2022-03-15 14:10:32,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=676, Invalid=2984, Unknown=0, NotChecked=0, Total=3660 [2022-03-15 14:10:32,225 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 542 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:32,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 1178 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:10:32,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7188 states. [2022-03-15 14:10:32,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7188 to 5152. [2022-03-15 14:10:32,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5152 states, 5151 states have (on average 2.839254513686663) internal successors, (14625), 5151 states have internal predecessors, (14625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:32,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5152 states to 5152 states and 14625 transitions. [2022-03-15 14:10:32,395 INFO L78 Accepts]: Start accepts. Automaton has 5152 states and 14625 transitions. Word has length 75 [2022-03-15 14:10:32,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:32,395 INFO L470 AbstractCegarLoop]: Abstraction has 5152 states and 14625 transitions. [2022-03-15 14:10:32,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:32,395 INFO L276 IsEmpty]: Start isEmpty. Operand 5152 states and 14625 transitions. [2022-03-15 14:10:32,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:10:32,404 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:32,404 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:10:32,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-15 14:10:32,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:32,619 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:32,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:32,620 INFO L85 PathProgramCache]: Analyzing trace with hash -769747230, now seen corresponding path program 10 times [2022-03-15 14:10:32,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:32,620 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678518013] [2022-03-15 14:10:32,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:32,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:32,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:32,748 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:32,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678518013] [2022-03-15 14:10:32,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678518013] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:10:32,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147938800] [2022-03-15 14:10:32,749 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:10:32,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:32,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:10:32,750 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) [2022-03-15 14:10:32,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 14:10:32,817 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:10:32,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:10:32,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:10:32,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:10:33,003 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:33,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:10:33,229 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:33,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147938800] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:10:33,229 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:10:33,229 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:10:33,229 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702363291] [2022-03-15 14:10:33,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:10:33,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:10:33,230 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:33,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:10:33,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:10:33,231 INFO L87 Difference]: Start difference. First operand 5152 states and 14625 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:35,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:35,120 INFO L93 Difference]: Finished difference Result 8235 states and 22815 transitions. [2022-03-15 14:10:35,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-15 14:10:35,121 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-15 14:10:35,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:35,132 INFO L225 Difference]: With dead ends: 8235 [2022-03-15 14:10:35,133 INFO L226 Difference]: Without dead ends: 8175 [2022-03-15 14:10:35,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2070 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1162, Invalid=5158, Unknown=0, NotChecked=0, Total=6320 [2022-03-15 14:10:35,134 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 755 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:35,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 1395 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:10:35,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8175 states. [2022-03-15 14:10:35,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8175 to 5464. [2022-03-15 14:10:35,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5464 states, 5463 states have (on average 2.8407468423942888) internal successors, (15519), 5463 states have internal predecessors, (15519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:35,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5464 states to 5464 states and 15519 transitions. [2022-03-15 14:10:35,257 INFO L78 Accepts]: Start accepts. Automaton has 5464 states and 15519 transitions. Word has length 75 [2022-03-15 14:10:35,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:35,257 INFO L470 AbstractCegarLoop]: Abstraction has 5464 states and 15519 transitions. [2022-03-15 14:10:35,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:35,257 INFO L276 IsEmpty]: Start isEmpty. Operand 5464 states and 15519 transitions. [2022-03-15 14:10:35,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:10:35,268 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:35,268 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:10:35,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-15 14:10:35,483 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,SelfDestructingSolverStorable20 [2022-03-15 14:10:35,483 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:35,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:35,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1088159336, now seen corresponding path program 11 times [2022-03-15 14:10:35,484 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:35,484 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404926268] [2022-03-15 14:10:35,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:35,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:35,586 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:35,586 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:35,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404926268] [2022-03-15 14:10:35,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404926268] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:10:35,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510950134] [2022-03-15 14:10:35,587 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:10:35,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:35,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:10:35,588 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) [2022-03-15 14:10:35,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-15 14:10:35,673 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:10:35,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:10:35,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:10:35,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:10:35,847 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:35,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:10:36,047 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:36,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510950134] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:10:36,047 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:10:36,047 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-15 14:10:36,048 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506151077] [2022-03-15 14:10:36,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:10:36,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 14:10:36,048 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:36,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 14:10:36,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-03-15 14:10:36,048 INFO L87 Difference]: Start difference. First operand 5464 states and 15519 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:37,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:37,024 INFO L93 Difference]: Finished difference Result 6404 states and 18019 transitions. [2022-03-15 14:10:37,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:10:37,024 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-15 14:10:37,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:37,034 INFO L225 Difference]: With dead ends: 6404 [2022-03-15 14:10:37,034 INFO L226 Difference]: Without dead ends: 6332 [2022-03-15 14:10:37,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=370, Invalid=1886, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 14:10:37,035 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 273 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:37,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 1549 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:10:37,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2022-03-15 14:10:37,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 5584. [2022-03-15 14:10:37,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5584 states, 5583 states have (on average 2.8366469639978504) internal successors, (15837), 5583 states have internal predecessors, (15837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:37,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5584 states to 5584 states and 15837 transitions. [2022-03-15 14:10:37,140 INFO L78 Accepts]: Start accepts. Automaton has 5584 states and 15837 transitions. Word has length 75 [2022-03-15 14:10:37,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:37,140 INFO L470 AbstractCegarLoop]: Abstraction has 5584 states and 15837 transitions. [2022-03-15 14:10:37,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:37,141 INFO L276 IsEmpty]: Start isEmpty. Operand 5584 states and 15837 transitions. [2022-03-15 14:10:37,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:10:37,151 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:37,151 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:10:37,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-15 14:10:37,367 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,SelfDestructingSolverStorable21 [2022-03-15 14:10:37,367 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:37,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:37,368 INFO L85 PathProgramCache]: Analyzing trace with hash 723432570, now seen corresponding path program 12 times [2022-03-15 14:10:37,368 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:37,368 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393403006] [2022-03-15 14:10:37,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:37,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:37,468 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:37,468 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:37,468 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393403006] [2022-03-15 14:10:37,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393403006] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:10:37,468 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117966700] [2022-03-15 14:10:37,469 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:10:37,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:37,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:10:37,472 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) [2022-03-15 14:10:37,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-15 14:10:37,535 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:10:37,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:10:37,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:10:37,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:10:37,710 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:37,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:10:37,906 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:37,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117966700] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:10:37,906 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:10:37,906 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 14:10:37,907 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368517502] [2022-03-15 14:10:37,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:10:37,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:10:37,907 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:37,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:10:37,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:10:37,908 INFO L87 Difference]: Start difference. First operand 5584 states and 15837 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:39,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:39,146 INFO L93 Difference]: Finished difference Result 7773 states and 21686 transitions. [2022-03-15 14:10:39,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-15 14:10:39,147 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-15 14:10:39,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:39,159 INFO L225 Difference]: With dead ends: 7773 [2022-03-15 14:10:39,159 INFO L226 Difference]: Without dead ends: 7725 [2022-03-15 14:10:39,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1198 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=680, Invalid=3102, Unknown=0, NotChecked=0, Total=3782 [2022-03-15 14:10:39,160 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 461 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:39,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 1128 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:10:39,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7725 states. [2022-03-15 14:10:39,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7725 to 6084. [2022-03-15 14:10:39,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6084 states, 6083 states have (on average 2.842018740752918) internal successors, (17288), 6083 states have internal predecessors, (17288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:39,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 17288 transitions. [2022-03-15 14:10:39,264 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 17288 transitions. Word has length 75 [2022-03-15 14:10:39,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:39,264 INFO L470 AbstractCegarLoop]: Abstraction has 6084 states and 17288 transitions. [2022-03-15 14:10:39,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:39,265 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 17288 transitions. [2022-03-15 14:10:39,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:10:39,276 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:39,276 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:10:39,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-15 14:10:39,499 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,SelfDestructingSolverStorable22 [2022-03-15 14:10:39,499 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:39,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:39,499 INFO L85 PathProgramCache]: Analyzing trace with hash 744149956, now seen corresponding path program 13 times [2022-03-15 14:10:39,499 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:39,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695346787] [2022-03-15 14:10:39,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:39,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:39,607 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:39,608 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:39,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695346787] [2022-03-15 14:10:39,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695346787] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:10:39,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872801723] [2022-03-15 14:10:39,608 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:10:39,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:39,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:10:39,612 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) [2022-03-15 14:10:39,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-15 14:10:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:39,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:10:39,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:10:39,843 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:39,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:10:40,038 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:40,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872801723] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:10:40,038 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:10:40,038 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:10:40,038 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760182911] [2022-03-15 14:10:40,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:10:40,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:10:40,038 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:40,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:10:40,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:10:40,039 INFO L87 Difference]: Start difference. First operand 6084 states and 17288 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:42,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:42,757 INFO L93 Difference]: Finished difference Result 9659 states and 26854 transitions. [2022-03-15 14:10:42,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-03-15 14:10:42,758 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-15 14:10:42,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:42,773 INFO L225 Difference]: With dead ends: 9659 [2022-03-15 14:10:42,773 INFO L226 Difference]: Without dead ends: 9599 [2022-03-15 14:10:42,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3599 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1688, Invalid=8212, Unknown=0, NotChecked=0, Total=9900 [2022-03-15 14:10:42,774 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 555 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:42,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 1989 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:10:42,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9599 states. [2022-03-15 14:10:42,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9599 to 6296. [2022-03-15 14:10:42,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6296 states, 6295 states have (on average 2.845909451945989) internal successors, (17915), 6295 states have internal predecessors, (17915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:42,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6296 states to 6296 states and 17915 transitions. [2022-03-15 14:10:42,895 INFO L78 Accepts]: Start accepts. Automaton has 6296 states and 17915 transitions. Word has length 75 [2022-03-15 14:10:42,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:42,895 INFO L470 AbstractCegarLoop]: Abstraction has 6296 states and 17915 transitions. [2022-03-15 14:10:42,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:42,895 INFO L276 IsEmpty]: Start isEmpty. Operand 6296 states and 17915 transitions. [2022-03-15 14:10:42,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:10:42,905 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:42,905 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:10:42,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-15 14:10:43,105 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,SelfDestructingSolverStorable23 [2022-03-15 14:10:43,106 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:43,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:43,106 INFO L85 PathProgramCache]: Analyzing trace with hash 345920998, now seen corresponding path program 14 times [2022-03-15 14:10:43,106 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:43,106 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058827560] [2022-03-15 14:10:43,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:43,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:43,209 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:43,210 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:43,210 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058827560] [2022-03-15 14:10:43,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058827560] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:10:43,210 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562732926] [2022-03-15 14:10:43,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:10:43,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:43,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:10:43,212 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) [2022-03-15 14:10:43,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-15 14:10:43,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:10:43,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:10:43,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:10:43,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:10:43,437 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:43,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:10:43,614 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:43,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562732926] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:10:43,614 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:10:43,615 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 14:10:43,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293970075] [2022-03-15 14:10:43,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:10:43,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:10:43,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:43,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:10:43,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:10:43,615 INFO L87 Difference]: Start difference. First operand 6296 states and 17915 transitions. Second operand has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:45,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:45,313 INFO L93 Difference]: Finished difference Result 9212 states and 25881 transitions. [2022-03-15 14:10:45,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-15 14:10:45,313 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-15 14:10:45,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:45,327 INFO L225 Difference]: With dead ends: 9212 [2022-03-15 14:10:45,327 INFO L226 Difference]: Without dead ends: 9107 [2022-03-15 14:10:45,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2050 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1097, Invalid=5065, Unknown=0, NotChecked=0, Total=6162 [2022-03-15 14:10:45,328 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 507 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:45,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 1529 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:10:45,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9107 states. [2022-03-15 14:10:45,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9107 to 6668. [2022-03-15 14:10:45,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6668 states, 6667 states have (on average 2.8447577621118945) internal successors, (18966), 6667 states have internal predecessors, (18966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:45,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6668 states to 6668 states and 18966 transitions. [2022-03-15 14:10:45,513 INFO L78 Accepts]: Start accepts. Automaton has 6668 states and 18966 transitions. Word has length 75 [2022-03-15 14:10:45,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:45,513 INFO L470 AbstractCegarLoop]: Abstraction has 6668 states and 18966 transitions. [2022-03-15 14:10:45,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:45,513 INFO L276 IsEmpty]: Start isEmpty. Operand 6668 states and 18966 transitions. [2022-03-15 14:10:45,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:10:45,524 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:45,524 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:10:45,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-15 14:10:45,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:45,739 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:45,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:45,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1061334052, now seen corresponding path program 15 times [2022-03-15 14:10:45,739 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:45,739 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878088396] [2022-03-15 14:10:45,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:45,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:45,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:45,850 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:45,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878088396] [2022-03-15 14:10:45,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878088396] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:10:45,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261686121] [2022-03-15 14:10:45,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:10:45,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:45,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:10:45,852 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) [2022-03-15 14:10:45,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-15 14:10:45,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:10:45,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:10:45,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:10:45,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:10:46,075 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:46,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:10:46,250 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:46,250 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261686121] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:10:46,250 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:10:46,251 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 14:10:46,251 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923691458] [2022-03-15 14:10:46,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:10:46,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:10:46,251 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:46,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:10:46,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:10:46,252 INFO L87 Difference]: Start difference. First operand 6668 states and 18966 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:47,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:47,617 INFO L93 Difference]: Finished difference Result 10227 states and 28654 transitions. [2022-03-15 14:10:47,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-15 14:10:47,617 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-15 14:10:47,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:47,632 INFO L225 Difference]: With dead ends: 10227 [2022-03-15 14:10:47,632 INFO L226 Difference]: Without dead ends: 10179 [2022-03-15 14:10:47,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1423 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=790, Invalid=3632, Unknown=0, NotChecked=0, Total=4422 [2022-03-15 14:10:47,633 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 503 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:47,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 1442 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:10:47,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10179 states. [2022-03-15 14:10:47,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10179 to 7688. [2022-03-15 14:10:47,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7688 states, 7687 states have (on average 2.8477949785351893) internal successors, (21891), 7687 states have internal predecessors, (21891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:47,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7688 states to 7688 states and 21891 transitions. [2022-03-15 14:10:47,801 INFO L78 Accepts]: Start accepts. Automaton has 7688 states and 21891 transitions. Word has length 75 [2022-03-15 14:10:47,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:47,801 INFO L470 AbstractCegarLoop]: Abstraction has 7688 states and 21891 transitions. [2022-03-15 14:10:47,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:47,801 INFO L276 IsEmpty]: Start isEmpty. Operand 7688 states and 21891 transitions. [2022-03-15 14:10:47,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:10:47,811 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:47,811 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:10:47,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-15 14:10:48,012 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,SelfDestructingSolverStorable25 [2022-03-15 14:10:48,012 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:48,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:48,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1040616666, now seen corresponding path program 16 times [2022-03-15 14:10:48,012 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:48,012 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984776923] [2022-03-15 14:10:48,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:48,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:48,114 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:48,114 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:48,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984776923] [2022-03-15 14:10:48,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984776923] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:10:48,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309854449] [2022-03-15 14:10:48,114 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:10:48,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:48,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:10:48,115 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) [2022-03-15 14:10:48,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-15 14:10:48,169 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:10:48,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:10:48,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:10:48,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:10:48,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:48,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:10:48,567 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:48,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309854449] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:10:48,567 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:10:48,567 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:10:48,567 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276477200] [2022-03-15 14:10:48,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:10:48,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:10:48,568 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:48,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:10:48,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:10:48,571 INFO L87 Difference]: Start difference. First operand 7688 states and 21891 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:50,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:50,853 INFO L93 Difference]: Finished difference Result 11197 states and 31292 transitions. [2022-03-15 14:10:50,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-15 14:10:50,853 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-15 14:10:50,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:50,867 INFO L225 Difference]: With dead ends: 11197 [2022-03-15 14:10:50,868 INFO L226 Difference]: Without dead ends: 11137 [2022-03-15 14:10:50,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2794 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1413, Invalid=6597, Unknown=0, NotChecked=0, Total=8010 [2022-03-15 14:10:50,868 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 727 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:50,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 1483 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:10:50,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11137 states. [2022-03-15 14:10:50,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11137 to 7824. [2022-03-15 14:10:50,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7824 states, 7823 states have (on average 2.8491627252972007) internal successors, (22289), 7823 states have internal predecessors, (22289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:50,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7824 states to 7824 states and 22289 transitions. [2022-03-15 14:10:50,992 INFO L78 Accepts]: Start accepts. Automaton has 7824 states and 22289 transitions. Word has length 75 [2022-03-15 14:10:50,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:50,992 INFO L470 AbstractCegarLoop]: Abstraction has 7824 states and 22289 transitions. [2022-03-15 14:10:50,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:50,992 INFO L276 IsEmpty]: Start isEmpty. Operand 7824 states and 22289 transitions. [2022-03-15 14:10:51,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:10:51,002 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:51,002 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:10:51,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-15 14:10:51,202 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,SelfDestructingSolverStorable26 [2022-03-15 14:10:51,203 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:51,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:51,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1359028772, now seen corresponding path program 17 times [2022-03-15 14:10:51,203 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:51,203 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507307554] [2022-03-15 14:10:51,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:51,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:51,303 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:51,304 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:51,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507307554] [2022-03-15 14:10:51,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507307554] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:10:51,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118266526] [2022-03-15 14:10:51,304 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:10:51,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:51,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:10:51,308 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) [2022-03-15 14:10:51,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-15 14:10:51,368 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:10:51,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:10:51,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:10:51,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:10:51,539 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:51,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:10:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:51,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118266526] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:10:51,789 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:10:51,789 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-15 14:10:51,790 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327180273] [2022-03-15 14:10:51,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:10:51,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 14:10:51,790 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:51,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 14:10:51,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-03-15 14:10:51,791 INFO L87 Difference]: Start difference. First operand 7824 states and 22289 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:52,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:52,692 INFO L93 Difference]: Finished difference Result 8740 states and 24715 transitions. [2022-03-15 14:10:52,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-15 14:10:52,693 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-15 14:10:52,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:52,705 INFO L225 Difference]: With dead ends: 8740 [2022-03-15 14:10:52,706 INFO L226 Difference]: Without dead ends: 8668 [2022-03-15 14:10:52,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=413, Invalid=2037, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 14:10:52,706 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 297 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:52,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 1369 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:10:52,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8668 states. [2022-03-15 14:10:52,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8668 to 7940. [2022-03-15 14:10:52,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7940 states, 7939 states have (on average 2.846706134273838) internal successors, (22600), 7939 states have internal predecessors, (22600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:52,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7940 states to 7940 states and 22600 transitions. [2022-03-15 14:10:52,817 INFO L78 Accepts]: Start accepts. Automaton has 7940 states and 22600 transitions. Word has length 75 [2022-03-15 14:10:52,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:52,817 INFO L470 AbstractCegarLoop]: Abstraction has 7940 states and 22600 transitions. [2022-03-15 14:10:52,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:52,818 INFO L276 IsEmpty]: Start isEmpty. Operand 7940 states and 22600 transitions. [2022-03-15 14:10:52,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:10:52,830 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:52,830 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:10:52,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-03-15 14:10:53,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-15 14:10:53,031 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:53,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:53,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1556288346, now seen corresponding path program 18 times [2022-03-15 14:10:53,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:53,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285261528] [2022-03-15 14:10:53,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:53,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:53,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:53,143 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:53,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285261528] [2022-03-15 14:10:53,143 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285261528] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:10:53,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531119556] [2022-03-15 14:10:53,143 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:10:53,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:53,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:10:53,144 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) [2022-03-15 14:10:53,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-15 14:10:53,200 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:10:53,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:10:53,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:10:53,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:10:53,350 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:53,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:10:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:53,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531119556] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:10:53,557 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:10:53,557 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:10:53,557 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860691482] [2022-03-15 14:10:53,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:10:53,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:10:53,557 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:53,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:10:53,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:10:53,558 INFO L87 Difference]: Start difference. First operand 7940 states and 22600 transitions. Second operand has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 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) [2022-03-15 14:10:54,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:54,802 INFO L93 Difference]: Finished difference Result 12785 states and 36011 transitions. [2022-03-15 14:10:54,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-15 14:10:54,802 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 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 75 [2022-03-15 14:10:54,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:54,822 INFO L225 Difference]: With dead ends: 12785 [2022-03-15 14:10:54,822 INFO L226 Difference]: Without dead ends: 12737 [2022-03-15 14:10:54,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=756, Invalid=3026, Unknown=0, NotChecked=0, Total=3782 [2022-03-15 14:10:54,823 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 606 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:54,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 1422 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:10:54,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12737 states. [2022-03-15 14:10:54,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12737 to 9228. [2022-03-15 14:10:54,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9228 states, 9227 states have (on average 2.849680286116831) internal successors, (26294), 9227 states have internal predecessors, (26294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:55,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9228 states to 9228 states and 26294 transitions. [2022-03-15 14:10:55,033 INFO L78 Accepts]: Start accepts. Automaton has 9228 states and 26294 transitions. Word has length 75 [2022-03-15 14:10:55,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:55,033 INFO L470 AbstractCegarLoop]: Abstraction has 9228 states and 26294 transitions. [2022-03-15 14:10:55,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 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) [2022-03-15 14:10:55,034 INFO L276 IsEmpty]: Start isEmpty. Operand 9228 states and 26294 transitions. [2022-03-15 14:10:55,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:10:55,044 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:55,044 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:10:55,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-15 14:10:55,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-15 14:10:55,245 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:55,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:55,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1535570960, now seen corresponding path program 19 times [2022-03-15 14:10:55,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:55,246 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655339039] [2022-03-15 14:10:55,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:55,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:55,360 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:55,360 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:55,360 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655339039] [2022-03-15 14:10:55,360 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655339039] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:10:55,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970893178] [2022-03-15 14:10:55,361 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:10:55,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:55,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:10:55,364 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) [2022-03-15 14:10:55,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-15 14:10:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:55,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:10:55,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:10:55,608 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:55,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:10:55,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:55,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970893178] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:10:55,817 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:10:55,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-03-15 14:10:55,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936029515] [2022-03-15 14:10:55,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:10:55,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:10:55,818 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:55,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:10:55,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:10:55,818 INFO L87 Difference]: Start difference. First operand 9228 states and 26294 transitions. Second operand has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:57,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:57,698 INFO L93 Difference]: Finished difference Result 13632 states and 38321 transitions. [2022-03-15 14:10:57,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-15 14:10:57,698 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-15 14:10:57,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:57,720 INFO L225 Difference]: With dead ends: 13632 [2022-03-15 14:10:57,720 INFO L226 Difference]: Without dead ends: 13572 [2022-03-15 14:10:57,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2319 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1291, Invalid=5351, Unknown=0, NotChecked=0, Total=6642 [2022-03-15 14:10:57,721 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 720 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:57,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [720 Valid, 1610 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:10:57,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13572 states. [2022-03-15 14:10:57,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13572 to 9472. [2022-03-15 14:10:57,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9472 states, 9471 states have (on average 2.851335656213705) internal successors, (27005), 9471 states have internal predecessors, (27005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:57,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9472 states to 9472 states and 27005 transitions. [2022-03-15 14:10:57,887 INFO L78 Accepts]: Start accepts. Automaton has 9472 states and 27005 transitions. Word has length 75 [2022-03-15 14:10:57,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:57,887 INFO L470 AbstractCegarLoop]: Abstraction has 9472 states and 27005 transitions. [2022-03-15 14:10:57,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:57,888 INFO L276 IsEmpty]: Start isEmpty. Operand 9472 states and 27005 transitions. [2022-03-15 14:10:57,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:10:57,901 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:57,901 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:10:57,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-15 14:10:58,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:58,114 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:10:58,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:10:58,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1853983066, now seen corresponding path program 20 times [2022-03-15 14:10:58,114 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:10:58,114 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622521402] [2022-03-15 14:10:58,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:10:58,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:10:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:10:58,223 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:58,223 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:10:58,223 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622521402] [2022-03-15 14:10:58,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622521402] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:10:58,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354599467] [2022-03-15 14:10:58,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:10:58,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:10:58,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:10:58,225 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) [2022-03-15 14:10:58,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-15 14:10:58,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:10:58,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:10:58,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:10:58,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:10:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:58,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:10:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:10:58,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354599467] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:10:58,764 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:10:58,764 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 14:10:58,764 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070193737] [2022-03-15 14:10:58,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:10:58,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:10:58,765 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:10:58,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:10:58,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:10:58,766 INFO L87 Difference]: Start difference. First operand 9472 states and 27005 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:59,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:10:59,625 INFO L93 Difference]: Finished difference Result 10784 states and 30439 transitions. [2022-03-15 14:10:59,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:10:59,625 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-15 14:10:59,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:10:59,641 INFO L225 Difference]: With dead ends: 10784 [2022-03-15 14:10:59,641 INFO L226 Difference]: Without dead ends: 10712 [2022-03-15 14:10:59,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=405, Invalid=1757, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 14:10:59,642 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 374 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:10:59,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 1296 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:10:59,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10712 states. [2022-03-15 14:10:59,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10712 to 9616. [2022-03-15 14:10:59,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9616 states, 9615 states have (on average 2.8510660426417056) internal successors, (27413), 9615 states have internal predecessors, (27413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:59,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9616 states to 9616 states and 27413 transitions. [2022-03-15 14:10:59,792 INFO L78 Accepts]: Start accepts. Automaton has 9616 states and 27413 transitions. Word has length 75 [2022-03-15 14:10:59,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:10:59,792 INFO L470 AbstractCegarLoop]: Abstraction has 9616 states and 27413 transitions. [2022-03-15 14:10:59,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:10:59,792 INFO L276 IsEmpty]: Start isEmpty. Operand 9616 states and 27413 transitions. [2022-03-15 14:10:59,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:10:59,807 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:10:59,807 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:10:59,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-15 14:11:00,023 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,SelfDestructingSolverStorable30 [2022-03-15 14:11:00,023 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:11:00,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:11:00,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1620543276, now seen corresponding path program 21 times [2022-03-15 14:11:00,024 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:11:00,024 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997739087] [2022-03-15 14:11:00,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:11:00,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:11:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:00,127 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:00,128 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:11:00,128 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997739087] [2022-03-15 14:11:00,128 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997739087] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:11:00,128 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55057800] [2022-03-15 14:11:00,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:11:00,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:00,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:11:00,129 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) [2022-03-15 14:11:00,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-15 14:11:00,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:11:00,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:11:00,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:11:00,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:11:00,418 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:00,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:11:00,599 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:00,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55057800] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:11:00,600 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:11:00,600 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-15 14:11:00,600 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111712675] [2022-03-15 14:11:00,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:11:00,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 14:11:00,600 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:11:00,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 14:11:00,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-03-15 14:11:00,601 INFO L87 Difference]: Start difference. First operand 9616 states and 27413 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:01,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:11:01,042 INFO L93 Difference]: Finished difference Result 10060 states and 28541 transitions. [2022-03-15 14:11:01,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 14:11:01,043 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-15 14:11:01,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:11:01,058 INFO L225 Difference]: With dead ends: 10060 [2022-03-15 14:11:01,058 INFO L226 Difference]: Without dead ends: 10012 [2022-03-15 14:11:01,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=800, Unknown=0, NotChecked=0, Total=992 [2022-03-15 14:11:01,059 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 247 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:11:01,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 956 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:11:01,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10012 states. [2022-03-15 14:11:01,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10012 to 9640. [2022-03-15 14:11:01,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9640 states, 9639 states have (on average 2.8495694574125947) internal successors, (27467), 9639 states have internal predecessors, (27467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:01,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9640 states to 9640 states and 27467 transitions. [2022-03-15 14:11:01,191 INFO L78 Accepts]: Start accepts. Automaton has 9640 states and 27467 transitions. Word has length 75 [2022-03-15 14:11:01,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:11:01,192 INFO L470 AbstractCegarLoop]: Abstraction has 9640 states and 27467 transitions. [2022-03-15 14:11:01,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:01,192 INFO L276 IsEmpty]: Start isEmpty. Operand 9640 states and 27467 transitions. [2022-03-15 14:11:01,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:11:01,205 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:11:01,205 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:11:01,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-15 14:11:01,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:01,406 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:11:01,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:11:01,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1305078476, now seen corresponding path program 22 times [2022-03-15 14:11:01,406 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:11:01,406 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707294749] [2022-03-15 14:11:01,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:11:01,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:11:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:01,501 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:11:01,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707294749] [2022-03-15 14:11:01,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707294749] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:11:01,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433675361] [2022-03-15 14:11:01,502 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:11:01,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:01,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:11:01,504 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) [2022-03-15 14:11:01,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-15 14:11:01,567 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:11:01,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:11:01,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:11:01,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:11:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:01,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:11:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:01,933 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433675361] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:11:01,933 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:11:01,934 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:11:01,934 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378210379] [2022-03-15 14:11:01,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:11:01,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:11:01,934 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:11:01,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:11:01,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:11:01,935 INFO L87 Difference]: Start difference. First operand 9640 states and 27467 transitions. Second operand has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:03,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:11:03,060 INFO L93 Difference]: Finished difference Result 13911 states and 39419 transitions. [2022-03-15 14:11:03,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-15 14:11:03,060 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-15 14:11:03,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:11:03,083 INFO L225 Difference]: With dead ends: 13911 [2022-03-15 14:11:03,083 INFO L226 Difference]: Without dead ends: 13887 [2022-03-15 14:11:03,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1685 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=891, Invalid=4365, Unknown=0, NotChecked=0, Total=5256 [2022-03-15 14:11:03,084 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 808 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:11:03,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 1347 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:11:03,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13887 states. [2022-03-15 14:11:03,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13887 to 9952. [2022-03-15 14:11:03,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9952 states, 9951 states have (on average 2.8531805848658425) internal successors, (28392), 9951 states have internal predecessors, (28392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:03,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9952 states to 9952 states and 28392 transitions. [2022-03-15 14:11:03,315 INFO L78 Accepts]: Start accepts. Automaton has 9952 states and 28392 transitions. Word has length 75 [2022-03-15 14:11:03,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:11:03,315 INFO L470 AbstractCegarLoop]: Abstraction has 9952 states and 28392 transitions. [2022-03-15 14:11:03,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:03,315 INFO L276 IsEmpty]: Start isEmpty. Operand 9952 states and 28392 transitions. [2022-03-15 14:11:03,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:11:03,326 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:11:03,326 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:11:03,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-03-15 14:11:03,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:03,526 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:11:03,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:11:03,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1284361090, now seen corresponding path program 23 times [2022-03-15 14:11:03,527 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:11:03,527 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618388672] [2022-03-15 14:11:03,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:11:03,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:11:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:03,632 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:11:03,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618388672] [2022-03-15 14:11:03,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618388672] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:11:03,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392083246] [2022-03-15 14:11:03,632 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:11:03,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:03,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:11:03,633 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) [2022-03-15 14:11:03,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-15 14:11:03,691 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:11:03,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:11:03,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-15 14:11:03,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:11:03,950 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:03,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:11:04,208 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:04,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392083246] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:11:04,208 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:11:04,208 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-15 14:11:04,208 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582966938] [2022-03-15 14:11:04,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:11:04,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-15 14:11:04,209 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:11:04,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-15 14:11:04,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-03-15 14:11:04,210 INFO L87 Difference]: Start difference. First operand 9952 states and 28392 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) [2022-03-15 14:11:06,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:11:06,646 INFO L93 Difference]: Finished difference Result 14859 states and 41765 transitions. [2022-03-15 14:11:06,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-15 14:11:06,646 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 75 [2022-03-15 14:11:06,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:11:06,672 INFO L225 Difference]: With dead ends: 14859 [2022-03-15 14:11:06,672 INFO L226 Difference]: Without dead ends: 14814 [2022-03-15 14:11:06,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2811 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1567, Invalid=7175, Unknown=0, NotChecked=0, Total=8742 [2022-03-15 14:11:06,673 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 1420 mSDsluCounter, 1922 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 1976 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:11:06,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1420 Valid, 1976 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:11:06,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14814 states. [2022-03-15 14:11:06,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14814 to 9836. [2022-03-15 14:11:06,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9836 states, 9835 states have (on average 2.85246568378241) internal successors, (28054), 9835 states have internal predecessors, (28054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:06,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9836 states to 9836 states and 28054 transitions. [2022-03-15 14:11:06,871 INFO L78 Accepts]: Start accepts. Automaton has 9836 states and 28054 transitions. Word has length 75 [2022-03-15 14:11:06,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:11:06,871 INFO L470 AbstractCegarLoop]: Abstraction has 9836 states and 28054 transitions. [2022-03-15 14:11:06,871 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) [2022-03-15 14:11:06,871 INFO L276 IsEmpty]: Start isEmpty. Operand 9836 states and 28054 transitions. [2022-03-15 14:11:06,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:11:06,883 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:11:06,883 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:11:06,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-03-15 14:11:07,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:07,084 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:11:07,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:11:07,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1906375620, now seen corresponding path program 24 times [2022-03-15 14:11:07,084 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:11:07,084 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141261705] [2022-03-15 14:11:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:11:07,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:11:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:07,190 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:07,190 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:11:07,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141261705] [2022-03-15 14:11:07,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141261705] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:11:07,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402872127] [2022-03-15 14:11:07,191 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:11:07,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:07,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:11:07,196 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) [2022-03-15 14:11:07,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-15 14:11:07,268 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:11:07,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:11:07,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:11:07,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:11:07,468 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:07,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:11:07,653 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:07,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402872127] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:11:07,654 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:11:07,654 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:11:07,654 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648322900] [2022-03-15 14:11:07,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:11:07,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:11:07,654 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:11:07,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:11:07,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:11:07,655 INFO L87 Difference]: Start difference. First operand 9836 states and 28054 transitions. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 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) [2022-03-15 14:11:09,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:11:09,260 INFO L93 Difference]: Finished difference Result 13587 states and 38339 transitions. [2022-03-15 14:11:09,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-15 14:11:09,260 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 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 75 [2022-03-15 14:11:09,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:11:09,281 INFO L225 Difference]: With dead ends: 13587 [2022-03-15 14:11:09,282 INFO L226 Difference]: Without dead ends: 13512 [2022-03-15 14:11:09,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 145 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2525 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1294, Invalid=6362, Unknown=0, NotChecked=0, Total=7656 [2022-03-15 14:11:09,283 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 625 mSDsluCounter, 2069 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 2063 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:11:09,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 2063 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:11:09,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13512 states. [2022-03-15 14:11:09,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13512 to 10124. [2022-03-15 14:11:09,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10124 states, 10123 states have (on average 2.854292205867826) internal successors, (28894), 10123 states have internal predecessors, (28894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:09,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10124 states to 10124 states and 28894 transitions. [2022-03-15 14:11:09,442 INFO L78 Accepts]: Start accepts. Automaton has 10124 states and 28894 transitions. Word has length 75 [2022-03-15 14:11:09,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:11:09,442 INFO L470 AbstractCegarLoop]: Abstraction has 10124 states and 28894 transitions. [2022-03-15 14:11:09,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 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) [2022-03-15 14:11:09,442 INFO L276 IsEmpty]: Start isEmpty. Operand 10124 states and 28894 transitions. [2022-03-15 14:11:09,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:11:09,454 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:11:09,455 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:11:09,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-03-15 14:11:09,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:09,655 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:11:09,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:11:09,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1356812648, now seen corresponding path program 25 times [2022-03-15 14:11:09,656 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:11:09,656 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491675589] [2022-03-15 14:11:09,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:11:09,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:11:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:09,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:09,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:11:09,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491675589] [2022-03-15 14:11:09,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491675589] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:11:09,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213576735] [2022-03-15 14:11:09,738 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:11:09,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:09,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:11:09,739 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) [2022-03-15 14:11:09,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-15 14:11:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:09,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:11:09,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:11:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:09,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:11:10,113 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:10,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213576735] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:11:10,113 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:11:10,113 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 14:11:10,113 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634819306] [2022-03-15 14:11:10,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:11:10,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:11:10,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:11:10,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:11:10,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:11:10,114 INFO L87 Difference]: Start difference. First operand 10124 states and 28894 transitions. Second operand has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 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) [2022-03-15 14:11:11,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:11:11,338 INFO L93 Difference]: Finished difference Result 13500 states and 38140 transitions. [2022-03-15 14:11:11,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-15 14:11:11,338 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 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 75 [2022-03-15 14:11:11,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:11:11,359 INFO L225 Difference]: With dead ends: 13500 [2022-03-15 14:11:11,359 INFO L226 Difference]: Without dead ends: 13410 [2022-03-15 14:11:11,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1494 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=927, Invalid=4185, Unknown=0, NotChecked=0, Total=5112 [2022-03-15 14:11:11,360 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 523 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:11:11,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 1915 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:11:11,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13410 states. [2022-03-15 14:11:11,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13410 to 10124. [2022-03-15 14:11:11,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10124 states, 10123 states have (on average 2.8531067865257334) internal successors, (28882), 10123 states have internal predecessors, (28882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:11,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10124 states to 10124 states and 28882 transitions. [2022-03-15 14:11:11,516 INFO L78 Accepts]: Start accepts. Automaton has 10124 states and 28882 transitions. Word has length 75 [2022-03-15 14:11:11,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:11:11,516 INFO L470 AbstractCegarLoop]: Abstraction has 10124 states and 28882 transitions. [2022-03-15 14:11:11,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 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) [2022-03-15 14:11:11,516 INFO L276 IsEmpty]: Start isEmpty. Operand 10124 states and 28882 transitions. [2022-03-15 14:11:11,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:11:11,528 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:11:11,529 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:11:11,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-15 14:11:11,733 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,SelfDestructingSolverStorable35 [2022-03-15 14:11:11,733 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:11:11,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:11:11,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1594629350, now seen corresponding path program 26 times [2022-03-15 14:11:11,733 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:11:11,733 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753891091] [2022-03-15 14:11:11,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:11:11,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:11:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:11,835 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:11,835 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:11:11,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753891091] [2022-03-15 14:11:11,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753891091] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:11:11,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657352393] [2022-03-15 14:11:11,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:11:11,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:11,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:11:11,837 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) [2022-03-15 14:11:11,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-15 14:11:11,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:11:11,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:11:11,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:11:11,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:11:12,057 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:12,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:11:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:12,243 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657352393] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:11:12,243 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:11:12,243 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-03-15 14:11:12,243 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063649081] [2022-03-15 14:11:12,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:11:12,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 14:11:12,244 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:11:12,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 14:11:12,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-03-15 14:11:12,244 INFO L87 Difference]: Start difference. First operand 10124 states and 28882 transitions. Second operand has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 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) [2022-03-15 14:11:13,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:11:13,173 INFO L93 Difference]: Finished difference Result 13442 states and 38145 transitions. [2022-03-15 14:11:13,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:11:13,173 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 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 75 [2022-03-15 14:11:13,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:11:13,194 INFO L225 Difference]: With dead ends: 13442 [2022-03-15 14:11:13,194 INFO L226 Difference]: Without dead ends: 13382 [2022-03-15 14:11:13,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 149 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=678, Invalid=2628, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:11:13,195 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 522 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:11:13,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 1622 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:11:13,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13382 states. [2022-03-15 14:11:13,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13382 to 10064. [2022-03-15 14:11:13,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10064 states, 10063 states have (on average 2.8505415879956275) internal successors, (28685), 10063 states have internal predecessors, (28685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:13,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10064 states to 10064 states and 28685 transitions. [2022-03-15 14:11:13,364 INFO L78 Accepts]: Start accepts. Automaton has 10064 states and 28685 transitions. Word has length 75 [2022-03-15 14:11:13,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:11:13,364 INFO L470 AbstractCegarLoop]: Abstraction has 10064 states and 28685 transitions. [2022-03-15 14:11:13,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 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) [2022-03-15 14:11:13,365 INFO L276 IsEmpty]: Start isEmpty. Operand 10064 states and 28685 transitions. [2022-03-15 14:11:13,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:11:13,377 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:11:13,377 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:11:13,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-15 14:11:13,577 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,SelfDestructingSolverStorable36 [2022-03-15 14:11:13,578 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:11:13,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:11:13,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1909193570, now seen corresponding path program 27 times [2022-03-15 14:11:13,578 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:11:13,578 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799273867] [2022-03-15 14:11:13,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:11:13,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:11:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:13,672 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:13,672 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:11:13,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799273867] [2022-03-15 14:11:13,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799273867] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:11:13,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679432576] [2022-03-15 14:11:13,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:11:13,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:13,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:11:13,674 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) [2022-03-15 14:11:13,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-15 14:11:13,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:11:13,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:11:13,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:11:13,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:11:13,910 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:13,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:11:14,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:14,086 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679432576] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:11:14,086 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:11:14,087 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:11:14,087 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332497720] [2022-03-15 14:11:14,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:11:14,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:11:14,087 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:11:14,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:11:14,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:11:14,088 INFO L87 Difference]: Start difference. First operand 10064 states and 28685 transitions. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 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) [2022-03-15 14:11:17,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:11:17,827 INFO L93 Difference]: Finished difference Result 13835 states and 38920 transitions. [2022-03-15 14:11:17,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-03-15 14:11:17,828 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 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 75 [2022-03-15 14:11:17,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:11:17,850 INFO L225 Difference]: With dead ends: 13835 [2022-03-15 14:11:17,850 INFO L226 Difference]: Without dead ends: 13685 [2022-03-15 14:11:17,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7133 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2600, Invalid=16306, Unknown=0, NotChecked=0, Total=18906 [2022-03-15 14:11:17,853 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 626 mSDsluCounter, 2045 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:11:17,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 2027 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:11:17,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13685 states. [2022-03-15 14:11:18,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13685 to 10524. [2022-03-15 14:11:18,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10524 states, 10523 states have (on average 2.8526085717000855) internal successors, (30018), 10523 states have internal predecessors, (30018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:18,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10524 states to 10524 states and 30018 transitions. [2022-03-15 14:11:18,053 INFO L78 Accepts]: Start accepts. Automaton has 10524 states and 30018 transitions. Word has length 75 [2022-03-15 14:11:18,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:11:18,053 INFO L470 AbstractCegarLoop]: Abstraction has 10524 states and 30018 transitions. [2022-03-15 14:11:18,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 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) [2022-03-15 14:11:18,054 INFO L276 IsEmpty]: Start isEmpty. Operand 10524 states and 30018 transitions. [2022-03-15 14:11:18,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:11:18,065 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:11:18,065 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:11:18,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-15 14:11:18,274 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,SelfDestructingSolverStorable37 [2022-03-15 14:11:18,275 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:11:18,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:11:18,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1359630598, now seen corresponding path program 28 times [2022-03-15 14:11:18,275 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:11:18,275 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143748002] [2022-03-15 14:11:18,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:11:18,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:11:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:18,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:18,370 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:11:18,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143748002] [2022-03-15 14:11:18,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143748002] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:11:18,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792837835] [2022-03-15 14:11:18,370 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:11:18,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:18,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:11:18,376 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) [2022-03-15 14:11:18,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-15 14:11:18,453 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:11:18,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:11:18,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:11:18,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:11:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:18,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:11:18,807 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:18,807 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792837835] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:11:18,807 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:11:18,807 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 14:11:18,807 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672500919] [2022-03-15 14:11:18,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:11:18,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:11:18,808 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:11:18,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:11:18,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:11:18,808 INFO L87 Difference]: Start difference. First operand 10524 states and 30018 transitions. Second operand has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 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) [2022-03-15 14:11:20,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:11:20,595 INFO L93 Difference]: Finished difference Result 13590 states and 38411 transitions. [2022-03-15 14:11:20,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-03-15 14:11:20,596 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 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 75 [2022-03-15 14:11:20,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:11:20,617 INFO L225 Difference]: With dead ends: 13590 [2022-03-15 14:11:20,617 INFO L226 Difference]: Without dead ends: 13500 [2022-03-15 14:11:20,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2194 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1039, Invalid=5767, Unknown=0, NotChecked=0, Total=6806 [2022-03-15 14:11:20,618 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 491 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:11:20,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 1854 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:11:20,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13500 states. [2022-03-15 14:11:20,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13500 to 10508. [2022-03-15 14:11:20,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10508 states, 10507 states have (on average 2.84971923479585) internal successors, (29942), 10507 states have internal predecessors, (29942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:20,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10508 states to 10508 states and 29942 transitions. [2022-03-15 14:11:20,851 INFO L78 Accepts]: Start accepts. Automaton has 10508 states and 29942 transitions. Word has length 75 [2022-03-15 14:11:20,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:11:20,851 INFO L470 AbstractCegarLoop]: Abstraction has 10508 states and 29942 transitions. [2022-03-15 14:11:20,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 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) [2022-03-15 14:11:20,851 INFO L276 IsEmpty]: Start isEmpty. Operand 10508 states and 29942 transitions. [2022-03-15 14:11:20,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:11:20,865 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:11:20,865 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:11:20,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-03-15 14:11:21,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-03-15 14:11:21,065 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:11:21,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:11:21,066 INFO L85 PathProgramCache]: Analyzing trace with hash -796141068, now seen corresponding path program 29 times [2022-03-15 14:11:21,066 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:11:21,066 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728731556] [2022-03-15 14:11:21,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:11:21,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:11:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:21,162 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:11:21,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728731556] [2022-03-15 14:11:21,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728731556] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:11:21,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336483751] [2022-03-15 14:11:21,162 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:11:21,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:21,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:11:21,164 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) [2022-03-15 14:11:21,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-15 14:11:21,241 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:11:21,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:11:21,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-15 14:11:21,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:11:21,500 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:21,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:11:21,782 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:21,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336483751] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:11:21,782 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:11:21,782 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-03-15 14:11:21,783 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884212841] [2022-03-15 14:11:21,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:11:21,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:11:21,783 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:11:21,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:11:21,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:11:21,784 INFO L87 Difference]: Start difference. First operand 10508 states and 29942 transitions. Second operand has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 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) [2022-03-15 14:11:24,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:11:24,927 INFO L93 Difference]: Finished difference Result 14449 states and 40857 transitions. [2022-03-15 14:11:24,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-03-15 14:11:24,928 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 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 75 [2022-03-15 14:11:24,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:11:24,952 INFO L225 Difference]: With dead ends: 14449 [2022-03-15 14:11:24,952 INFO L226 Difference]: Without dead ends: 14401 [2022-03-15 14:11:24,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4938 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2058, Invalid=11514, Unknown=0, NotChecked=0, Total=13572 [2022-03-15 14:11:24,954 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 885 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:11:24,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 2321 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:11:24,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14401 states. [2022-03-15 14:11:25,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14401 to 11468. [2022-03-15 14:11:25,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11468 states, 11467 states have (on average 2.8532310107264323) internal successors, (32718), 11467 states have internal predecessors, (32718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:25,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11468 states to 11468 states and 32718 transitions. [2022-03-15 14:11:25,139 INFO L78 Accepts]: Start accepts. Automaton has 11468 states and 32718 transitions. Word has length 75 [2022-03-15 14:11:25,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:11:25,139 INFO L470 AbstractCegarLoop]: Abstraction has 11468 states and 32718 transitions. [2022-03-15 14:11:25,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 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) [2022-03-15 14:11:25,140 INFO L276 IsEmpty]: Start isEmpty. Operand 11468 states and 32718 transitions. [2022-03-15 14:11:25,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:11:25,153 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:11:25,154 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:11:25,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-03-15 14:11:25,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-15 14:11:25,354 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:11:25,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:11:25,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1419924444, now seen corresponding path program 30 times [2022-03-15 14:11:25,354 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:11:25,354 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454666223] [2022-03-15 14:11:25,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:11:25,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:11:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:25,462 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:25,463 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:11:25,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454666223] [2022-03-15 14:11:25,463 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454666223] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:11:25,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066650349] [2022-03-15 14:11:25,463 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:11:25,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:25,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:11:25,465 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) [2022-03-15 14:11:25,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-15 14:11:25,540 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:11:25,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:11:25,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:11:25,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:11:25,674 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:25,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:11:25,845 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:25,846 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066650349] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:11:25,846 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:11:25,846 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:11:25,846 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264523524] [2022-03-15 14:11:25,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:11:25,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:11:25,846 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:11:25,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:11:25,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:11:25,847 INFO L87 Difference]: Start difference. First operand 11468 states and 32718 transitions. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 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) [2022-03-15 14:11:29,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:11:29,243 INFO L93 Difference]: Finished difference Result 16177 states and 45532 transitions. [2022-03-15 14:11:29,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-03-15 14:11:29,244 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 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 75 [2022-03-15 14:11:29,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:11:29,270 INFO L225 Difference]: With dead ends: 16177 [2022-03-15 14:11:29,270 INFO L226 Difference]: Without dead ends: 16117 [2022-03-15 14:11:29,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7362 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2857, Invalid=15503, Unknown=0, NotChecked=0, Total=18360 [2022-03-15 14:11:29,272 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 795 mSDsluCounter, 1957 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:11:29,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 1975 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:11:29,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16117 states. [2022-03-15 14:11:29,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16117 to 12112. [2022-03-15 14:11:29,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12112 states, 12111 states have (on average 2.860622574519032) internal successors, (34645), 12111 states have internal predecessors, (34645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:29,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12112 states to 12112 states and 34645 transitions. [2022-03-15 14:11:29,466 INFO L78 Accepts]: Start accepts. Automaton has 12112 states and 34645 transitions. Word has length 75 [2022-03-15 14:11:29,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:11:29,466 INFO L470 AbstractCegarLoop]: Abstraction has 12112 states and 34645 transitions. [2022-03-15 14:11:29,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 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) [2022-03-15 14:11:29,467 INFO L276 IsEmpty]: Start isEmpty. Operand 12112 states and 34645 transitions. [2022-03-15 14:11:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:11:29,481 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:11:29,481 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:11:29,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-15 14:11:29,682 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,SelfDestructingSolverStorable40 [2022-03-15 14:11:29,682 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:11:29,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:11:29,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1818153402, now seen corresponding path program 31 times [2022-03-15 14:11:29,682 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:11:29,682 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927567650] [2022-03-15 14:11:29,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:11:29,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:11:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:29,765 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:29,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:11:29,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927567650] [2022-03-15 14:11:29,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927567650] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:11:29,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659332825] [2022-03-15 14:11:29,765 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:11:29,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:29,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:11:29,766 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) [2022-03-15 14:11:29,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-15 14:11:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:29,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:11:29,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:11:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:30,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:11:30,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:30,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659332825] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:11:30,181 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:11:30,181 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 14:11:30,181 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702968951] [2022-03-15 14:11:30,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:11:30,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:11:30,181 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:11:30,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:11:30,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:11:30,182 INFO L87 Difference]: Start difference. First operand 12112 states and 34645 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 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) [2022-03-15 14:11:32,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:11:32,098 INFO L93 Difference]: Finished difference Result 14497 states and 41139 transitions. [2022-03-15 14:11:32,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-15 14:11:32,099 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 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 75 [2022-03-15 14:11:32,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:11:32,122 INFO L225 Difference]: With dead ends: 14497 [2022-03-15 14:11:32,122 INFO L226 Difference]: Without dead ends: 14407 [2022-03-15 14:11:32,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3015 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1418, Invalid=7324, Unknown=0, NotChecked=0, Total=8742 [2022-03-15 14:11:32,124 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 475 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1908 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:11:32,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 1908 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:11:32,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14407 states. [2022-03-15 14:11:32,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14407 to 12140. [2022-03-15 14:11:32,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12140 states, 12139 states have (on average 2.857401762912925) internal successors, (34686), 12139 states have internal predecessors, (34686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:32,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12140 states to 12140 states and 34686 transitions. [2022-03-15 14:11:32,389 INFO L78 Accepts]: Start accepts. Automaton has 12140 states and 34686 transitions. Word has length 75 [2022-03-15 14:11:32,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:11:32,389 INFO L470 AbstractCegarLoop]: Abstraction has 12140 states and 34686 transitions. [2022-03-15 14:11:32,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 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) [2022-03-15 14:11:32,389 INFO L276 IsEmpty]: Start isEmpty. Operand 12140 states and 34686 transitions. [2022-03-15 14:11:32,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:11:32,402 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:11:32,402 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:11:32,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-15 14:11:32,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:32,603 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:11:32,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:11:32,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1714059606, now seen corresponding path program 32 times [2022-03-15 14:11:32,603 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:11:32,603 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041696694] [2022-03-15 14:11:32,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:11:32,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:11:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:32,684 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:32,684 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:11:32,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041696694] [2022-03-15 14:11:32,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041696694] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:11:32,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61636264] [2022-03-15 14:11:32,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:11:32,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:32,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:11:32,685 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) [2022-03-15 14:11:32,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-15 14:11:32,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:11:32,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:11:32,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:11:32,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:11:32,887 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:32,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:11:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:33,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61636264] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:11:33,080 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:11:33,080 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 14:11:33,080 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972872807] [2022-03-15 14:11:33,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:11:33,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:11:33,080 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:11:33,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:11:33,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:11:33,081 INFO L87 Difference]: Start difference. First operand 12140 states and 34686 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:34,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:11:34,317 INFO L93 Difference]: Finished difference Result 14819 states and 41810 transitions. [2022-03-15 14:11:34,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-15 14:11:34,317 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-15 14:11:34,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:11:34,342 INFO L225 Difference]: With dead ends: 14819 [2022-03-15 14:11:34,342 INFO L226 Difference]: Without dead ends: 14771 [2022-03-15 14:11:34,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1384 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=792, Invalid=3498, Unknown=0, NotChecked=0, Total=4290 [2022-03-15 14:11:34,343 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 621 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:11:34,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 1288 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:11:34,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14771 states. [2022-03-15 14:11:34,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14771 to 12640. [2022-03-15 14:11:34,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12640 states, 12639 states have (on average 2.8597990347337605) internal successors, (36145), 12639 states have internal predecessors, (36145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:34,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12640 states to 12640 states and 36145 transitions. [2022-03-15 14:11:34,602 INFO L78 Accepts]: Start accepts. Automaton has 12640 states and 36145 transitions. Word has length 75 [2022-03-15 14:11:34,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:11:34,603 INFO L470 AbstractCegarLoop]: Abstraction has 12640 states and 36145 transitions. [2022-03-15 14:11:34,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:34,603 INFO L276 IsEmpty]: Start isEmpty. Operand 12640 states and 36145 transitions. [2022-03-15 14:11:34,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:11:34,620 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:11:34,620 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:11:34,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-03-15 14:11:34,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:34,821 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:11:34,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:11:34,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1734776992, now seen corresponding path program 33 times [2022-03-15 14:11:34,821 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:11:34,821 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776894011] [2022-03-15 14:11:34,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:11:34,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:11:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:34,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:34,932 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:11:34,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776894011] [2022-03-15 14:11:34,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776894011] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:11:34,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116018468] [2022-03-15 14:11:34,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:11:34,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:34,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:11:34,934 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) [2022-03-15 14:11:34,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-15 14:11:35,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 14:11:35,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:11:35,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:11:35,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:11:35,181 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:35,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:11:35,389 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:35,389 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116018468] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:11:35,389 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:11:35,389 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:11:35,389 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445533593] [2022-03-15 14:11:35,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:11:35,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:11:35,390 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:11:35,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:11:35,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:11:35,390 INFO L87 Difference]: Start difference. First operand 12640 states and 36145 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:37,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:11:37,368 INFO L93 Difference]: Finished difference Result 15902 states and 44805 transitions. [2022-03-15 14:11:37,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-03-15 14:11:37,369 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-15 14:11:37,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:11:37,394 INFO L225 Difference]: With dead ends: 15902 [2022-03-15 14:11:37,394 INFO L226 Difference]: Without dead ends: 15842 [2022-03-15 14:11:37,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2971 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1467, Invalid=6905, Unknown=0, NotChecked=0, Total=8372 [2022-03-15 14:11:37,395 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 826 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:11:37,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 1766 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:11:37,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15842 states. [2022-03-15 14:11:37,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15842 to 12380. [2022-03-15 14:11:37,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12380 states, 12379 states have (on average 2.855319492689232) internal successors, (35346), 12379 states have internal predecessors, (35346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:37,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12380 states to 12380 states and 35346 transitions. [2022-03-15 14:11:37,675 INFO L78 Accepts]: Start accepts. Automaton has 12380 states and 35346 transitions. Word has length 75 [2022-03-15 14:11:37,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:11:37,675 INFO L470 AbstractCegarLoop]: Abstraction has 12380 states and 35346 transitions. [2022-03-15 14:11:37,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:37,675 INFO L276 IsEmpty]: Start isEmpty. Operand 12380 states and 35346 transitions. [2022-03-15 14:11:37,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:11:37,697 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:11:37,697 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:11:37,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-03-15 14:11:37,911 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,SelfDestructingSolverStorable43 [2022-03-15 14:11:37,911 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:11:37,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:11:37,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1416364886, now seen corresponding path program 34 times [2022-03-15 14:11:37,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:11:37,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933806823] [2022-03-15 14:11:37,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:11:37,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:11:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:38,006 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:38,006 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:11:38,006 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933806823] [2022-03-15 14:11:38,006 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933806823] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:11:38,007 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058501003] [2022-03-15 14:11:38,007 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:11:38,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:38,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:11:38,008 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) [2022-03-15 14:11:38,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-15 14:11:38,082 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:11:38,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:11:38,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:11:38,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:11:38,235 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:38,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:11:38,405 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:38,405 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058501003] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:11:38,405 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:11:38,405 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-15 14:11:38,405 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408745516] [2022-03-15 14:11:38,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:11:38,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 14:11:38,406 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:11:38,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 14:11:38,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-03-15 14:11:38,406 INFO L87 Difference]: Start difference. First operand 12380 states and 35346 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:38,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:11:38,999 INFO L93 Difference]: Finished difference Result 12832 states and 36524 transitions. [2022-03-15 14:11:39,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-15 14:11:39,000 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-15 14:11:39,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:11:39,021 INFO L225 Difference]: With dead ends: 12832 [2022-03-15 14:11:39,022 INFO L226 Difference]: Without dead ends: 12796 [2022-03-15 14:11:39,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=362, Invalid=1360, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:11:39,022 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 288 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:11:39,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 1230 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:11:39,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12796 states. [2022-03-15 14:11:39,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12796 to 12380. [2022-03-15 14:11:39,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12380 states, 12379 states have (on average 2.8549963648113743) internal successors, (35342), 12379 states have internal predecessors, (35342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:39,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12380 states to 12380 states and 35342 transitions. [2022-03-15 14:11:39,209 INFO L78 Accepts]: Start accepts. Automaton has 12380 states and 35342 transitions. Word has length 75 [2022-03-15 14:11:39,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:11:39,209 INFO L470 AbstractCegarLoop]: Abstraction has 12380 states and 35342 transitions. [2022-03-15 14:11:39,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:39,209 INFO L276 IsEmpty]: Start isEmpty. Operand 12380 states and 35342 transitions. [2022-03-15 14:11:39,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:11:39,226 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:11:39,226 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:11:39,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-15 14:11:39,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:39,426 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:11:39,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:11:39,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1192039042, now seen corresponding path program 35 times [2022-03-15 14:11:39,427 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:11:39,427 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601571802] [2022-03-15 14:11:39,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:11:39,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:11:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:39,588 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:39,588 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:11:39,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601571802] [2022-03-15 14:11:39,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601571802] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:11:39,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63321588] [2022-03-15 14:11:39,588 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:11:39,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:39,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:11:39,589 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) [2022-03-15 14:11:39,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-15 14:11:39,656 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:11:39,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:11:39,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:11:39,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:11:39,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:39,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:11:39,961 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:39,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63321588] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:11:39,961 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:11:39,961 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:11:39,961 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603880276] [2022-03-15 14:11:39,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:11:39,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:11:39,962 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:11:39,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:11:39,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:11:39,962 INFO L87 Difference]: Start difference. First operand 12380 states and 35342 transitions. Second operand has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 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) [2022-03-15 14:11:42,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:11:42,436 INFO L93 Difference]: Finished difference Result 21100 states and 59755 transitions. [2022-03-15 14:11:42,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-03-15 14:11:42,437 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 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 75 [2022-03-15 14:11:42,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:11:42,473 INFO L225 Difference]: With dead ends: 21100 [2022-03-15 14:11:42,473 INFO L226 Difference]: Without dead ends: 21052 [2022-03-15 14:11:42,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3625 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1406, Invalid=8100, Unknown=0, NotChecked=0, Total=9506 [2022-03-15 14:11:42,475 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 636 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:11:42,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 1750 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:11:42,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21052 states. [2022-03-15 14:11:42,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21052 to 13940. [2022-03-15 14:11:42,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13940 states, 13939 states have (on average 2.869072386828323) internal successors, (39992), 13939 states have internal predecessors, (39992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:42,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13940 states to 13940 states and 39992 transitions. [2022-03-15 14:11:42,861 INFO L78 Accepts]: Start accepts. Automaton has 13940 states and 39992 transitions. Word has length 75 [2022-03-15 14:11:42,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:11:42,861 INFO L470 AbstractCegarLoop]: Abstraction has 13940 states and 39992 transitions. [2022-03-15 14:11:42,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 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) [2022-03-15 14:11:42,861 INFO L276 IsEmpty]: Start isEmpty. Operand 13940 states and 39992 transitions. [2022-03-15 14:11:42,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:11:42,880 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:11:42,880 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:11:42,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-15 14:11:43,081 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,SelfDestructingSolverStorable45 [2022-03-15 14:11:43,082 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:11:43,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:11:43,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1171321656, now seen corresponding path program 36 times [2022-03-15 14:11:43,082 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:11:43,082 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214086396] [2022-03-15 14:11:43,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:11:43,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:11:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:43,272 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:43,272 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:11:43,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214086396] [2022-03-15 14:11:43,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214086396] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:11:43,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884406443] [2022-03-15 14:11:43,272 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:11:43,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:43,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:11:43,273 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) [2022-03-15 14:11:43,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-15 14:11:43,350 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:11:43,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:11:43,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:11:43,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:11:43,484 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:43,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:11:43,651 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:43,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884406443] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:11:43,652 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:11:43,652 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-03-15 14:11:43,652 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389640551] [2022-03-15 14:11:43,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:11:43,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:11:43,652 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:11:43,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:11:43,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:11:43,652 INFO L87 Difference]: Start difference. First operand 13940 states and 39992 transitions. Second operand has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 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) [2022-03-15 14:11:47,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:11:47,266 INFO L93 Difference]: Finished difference Result 23366 states and 66194 transitions. [2022-03-15 14:11:47,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-03-15 14:11:47,267 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 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 75 [2022-03-15 14:11:47,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:11:47,305 INFO L225 Difference]: With dead ends: 23366 [2022-03-15 14:11:47,305 INFO L226 Difference]: Without dead ends: 23306 [2022-03-15 14:11:47,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4285 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2009, Invalid=8911, Unknown=0, NotChecked=0, Total=10920 [2022-03-15 14:11:47,306 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 827 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:11:47,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 1936 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:11:47,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23306 states. [2022-03-15 14:11:47,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23306 to 14704. [2022-03-15 14:11:47,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14704 states, 14703 states have (on average 2.873767258382643) internal successors, (42253), 14703 states have internal predecessors, (42253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:47,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14704 states to 14704 states and 42253 transitions. [2022-03-15 14:11:47,651 INFO L78 Accepts]: Start accepts. Automaton has 14704 states and 42253 transitions. Word has length 75 [2022-03-15 14:11:47,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:11:47,652 INFO L470 AbstractCegarLoop]: Abstraction has 14704 states and 42253 transitions. [2022-03-15 14:11:47,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 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) [2022-03-15 14:11:47,652 INFO L276 IsEmpty]: Start isEmpty. Operand 14704 states and 42253 transitions. [2022-03-15 14:11:47,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:11:47,670 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:11:47,670 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:11:47,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-15 14:11:47,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:47,871 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:11:47,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:11:47,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1569550614, now seen corresponding path program 37 times [2022-03-15 14:11:47,871 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:11:47,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003353413] [2022-03-15 14:11:47,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:11:47,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:11:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:47,980 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:47,981 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:11:47,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003353413] [2022-03-15 14:11:47,981 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003353413] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:11:47,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552383470] [2022-03-15 14:11:47,981 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:11:47,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:47,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:11:47,982 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) [2022-03-15 14:11:47,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-15 14:11:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:48,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:11:48,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:11:48,239 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:48,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:11:48,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:48,438 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552383470] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:11:48,438 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:11:48,438 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:11:48,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323481276] [2022-03-15 14:11:48,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:11:48,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:11:48,439 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:11:48,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:11:48,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:11:48,439 INFO L87 Difference]: Start difference. First operand 14704 states and 42253 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) [2022-03-15 14:11:51,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:11:51,715 INFO L93 Difference]: Finished difference Result 23910 states and 68020 transitions. [2022-03-15 14:11:51,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-03-15 14:11:51,715 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 75 [2022-03-15 14:11:51,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:11:51,757 INFO L225 Difference]: With dead ends: 23910 [2022-03-15 14:11:51,757 INFO L226 Difference]: Without dead ends: 23745 [2022-03-15 14:11:51,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4628 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1812, Invalid=10398, Unknown=0, NotChecked=0, Total=12210 [2022-03-15 14:11:51,760 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 602 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 2130 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:11:51,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 2130 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 14:11:51,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23745 states. [2022-03-15 14:11:52,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23745 to 15332. [2022-03-15 14:11:52,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15332 states, 15331 states have (on average 2.87495923292675) internal successors, (44076), 15331 states have internal predecessors, (44076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:52,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15332 states to 15332 states and 44076 transitions. [2022-03-15 14:11:52,101 INFO L78 Accepts]: Start accepts. Automaton has 15332 states and 44076 transitions. Word has length 75 [2022-03-15 14:11:52,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:11:52,101 INFO L470 AbstractCegarLoop]: Abstraction has 15332 states and 44076 transitions. [2022-03-15 14:11:52,101 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) [2022-03-15 14:11:52,101 INFO L276 IsEmpty]: Start isEmpty. Operand 15332 states and 44076 transitions. [2022-03-15 14:11:52,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:11:52,120 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:11:52,120 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:11:52,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-03-15 14:11:52,321 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,SelfDestructingSolverStorable47 [2022-03-15 14:11:52,321 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:11:52,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:11:52,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1019987642, now seen corresponding path program 38 times [2022-03-15 14:11:52,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:11:52,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117244711] [2022-03-15 14:11:52,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:11:52,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:11:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:52,439 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:52,439 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:11:52,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117244711] [2022-03-15 14:11:52,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117244711] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:11:52,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447661118] [2022-03-15 14:11:52,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:11:52,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:52,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:11:52,444 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) [2022-03-15 14:11:52,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-15 14:11:52,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:11:52,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:11:52,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:11:52,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:11:52,678 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:52,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:11:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:52,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447661118] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:11:52,851 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:11:52,851 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:11:52,851 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900616302] [2022-03-15 14:11:52,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:11:52,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:11:52,851 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:11:52,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:11:52,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:11:52,852 INFO L87 Difference]: Start difference. First operand 15332 states and 44076 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) [2022-03-15 14:11:54,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:11:54,412 INFO L93 Difference]: Finished difference Result 22691 states and 64784 transitions. [2022-03-15 14:11:54,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-15 14:11:54,413 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 75 [2022-03-15 14:11:54,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:11:54,448 INFO L225 Difference]: With dead ends: 22691 [2022-03-15 14:11:54,448 INFO L226 Difference]: Without dead ends: 22511 [2022-03-15 14:11:54,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1198 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=751, Invalid=3281, Unknown=0, NotChecked=0, Total=4032 [2022-03-15 14:11:54,448 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 612 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:11:54,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 1426 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:11:54,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22511 states. [2022-03-15 14:11:54,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22511 to 15528. [2022-03-15 14:11:54,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15528 states, 15527 states have (on average 2.872093772138855) internal successors, (44595), 15527 states have internal predecessors, (44595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:54,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15528 states to 15528 states and 44595 transitions. [2022-03-15 14:11:54,735 INFO L78 Accepts]: Start accepts. Automaton has 15528 states and 44595 transitions. Word has length 75 [2022-03-15 14:11:54,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:11:54,735 INFO L470 AbstractCegarLoop]: Abstraction has 15528 states and 44595 transitions. [2022-03-15 14:11:54,735 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) [2022-03-15 14:11:54,736 INFO L276 IsEmpty]: Start isEmpty. Operand 15528 states and 44595 transitions. [2022-03-15 14:11:54,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:11:54,756 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:11:54,756 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:11:54,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-03-15 14:11:54,956 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,SelfDestructingSolverStorable48 [2022-03-15 14:11:54,956 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:11:54,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:11:54,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1062708802, now seen corresponding path program 39 times [2022-03-15 14:11:54,957 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:11:54,957 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068158151] [2022-03-15 14:11:54,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:11:54,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:11:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:55,072 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:55,072 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:11:55,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068158151] [2022-03-15 14:11:55,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068158151] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:11:55,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093645132] [2022-03-15 14:11:55,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:11:55,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:55,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:11:55,074 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) [2022-03-15 14:11:55,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-15 14:11:55,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:11:55,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:11:55,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:11:55,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:11:55,280 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:55,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:11:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:55,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093645132] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:11:55,447 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:11:55,447 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 14:11:55,447 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047150436] [2022-03-15 14:11:55,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:11:55,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:11:55,448 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:11:55,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:11:55,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:11:55,448 INFO L87 Difference]: Start difference. First operand 15528 states and 44595 transitions. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 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) [2022-03-15 14:11:57,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:11:57,270 INFO L93 Difference]: Finished difference Result 20081 states and 57112 transitions. [2022-03-15 14:11:57,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-03-15 14:11:57,271 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 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 75 [2022-03-15 14:11:57,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:11:57,304 INFO L225 Difference]: With dead ends: 20081 [2022-03-15 14:11:57,304 INFO L226 Difference]: Without dead ends: 20033 [2022-03-15 14:11:57,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2776 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1165, Invalid=6667, Unknown=0, NotChecked=0, Total=7832 [2022-03-15 14:11:57,306 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 534 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:11:57,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 1527 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:11:57,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20033 states. [2022-03-15 14:11:57,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20033 to 16404. [2022-03-15 14:11:57,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16404 states, 16403 states have (on average 2.8733768213131743) internal successors, (47132), 16403 states have internal predecessors, (47132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:11:57,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16404 states to 16404 states and 47132 transitions. [2022-03-15 14:11:57,703 INFO L78 Accepts]: Start accepts. Automaton has 16404 states and 47132 transitions. Word has length 75 [2022-03-15 14:11:57,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:11:57,703 INFO L470 AbstractCegarLoop]: Abstraction has 16404 states and 47132 transitions. [2022-03-15 14:11:57,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 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) [2022-03-15 14:11:57,703 INFO L276 IsEmpty]: Start isEmpty. Operand 16404 states and 47132 transitions. [2022-03-15 14:11:57,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:11:57,722 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:11:57,722 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:11:57,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-15 14:11:57,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-03-15 14:11:57,922 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:11:57,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:11:57,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1041991416, now seen corresponding path program 40 times [2022-03-15 14:11:57,923 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:11:57,923 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191443806] [2022-03-15 14:11:57,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:11:57,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:11:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:11:58,022 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:58,022 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:11:58,022 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191443806] [2022-03-15 14:11:58,022 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191443806] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:11:58,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498883096] [2022-03-15 14:11:58,023 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:11:58,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:11:58,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:11:58,024 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) [2022-03-15 14:11:58,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-15 14:11:58,100 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:11:58,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:11:58,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:11:58,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:11:58,227 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:58,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:11:58,397 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:11:58,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498883096] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:11:58,397 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:11:58,397 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:11:58,397 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772146509] [2022-03-15 14:11:58,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:11:58,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:11:58,398 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:11:58,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:11:58,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:11:58,398 INFO L87 Difference]: Start difference. First operand 16404 states and 47132 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) [2022-03-15 14:12:01,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:12:01,600 INFO L93 Difference]: Finished difference Result 22690 states and 64575 transitions. [2022-03-15 14:12:01,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-03-15 14:12:01,600 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 75 [2022-03-15 14:12:01,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:12:01,730 INFO L225 Difference]: With dead ends: 22690 [2022-03-15 14:12:01,731 INFO L226 Difference]: Without dead ends: 22630 [2022-03-15 14:12:01,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4575 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2158, Invalid=10052, Unknown=0, NotChecked=0, Total=12210 [2022-03-15 14:12:01,732 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 790 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:12:01,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [790 Valid, 1957 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:12:01,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22630 states. [2022-03-15 14:12:02,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22630 to 17120. [2022-03-15 14:12:02,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17120 states, 17119 states have (on average 2.8759273322039838) internal successors, (49233), 17119 states have internal predecessors, (49233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:12:02,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17120 states to 17120 states and 49233 transitions. [2022-03-15 14:12:02,101 INFO L78 Accepts]: Start accepts. Automaton has 17120 states and 49233 transitions. Word has length 75 [2022-03-15 14:12:02,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:12:02,101 INFO L470 AbstractCegarLoop]: Abstraction has 17120 states and 49233 transitions. [2022-03-15 14:12:02,101 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) [2022-03-15 14:12:02,101 INFO L276 IsEmpty]: Start isEmpty. Operand 17120 states and 49233 transitions. [2022-03-15 14:12:02,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:12:02,123 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:12:02,123 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:12:02,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-15 14:12:02,323 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,SelfDestructingSolverStorable50 [2022-03-15 14:12:02,324 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:12:02,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:12:02,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1440220374, now seen corresponding path program 41 times [2022-03-15 14:12:02,324 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:12:02,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841829609] [2022-03-15 14:12:02,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:12:02,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:12:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:12:02,419 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:02,419 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:12:02,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841829609] [2022-03-15 14:12:02,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841829609] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:12:02,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417513864] [2022-03-15 14:12:02,419 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:12:02,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:02,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:12:02,421 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) [2022-03-15 14:12:02,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-15 14:12:02,501 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:12:02,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:12:02,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:12:02,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:12:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:02,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:12:02,809 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:02,809 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417513864] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:12:02,809 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:12:02,809 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 14:12:02,809 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219881635] [2022-03-15 14:12:02,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:12:02,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:12:02,810 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:12:02,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:12:02,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:12:02,810 INFO L87 Difference]: Start difference. First operand 17120 states and 49233 transitions. Second operand has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 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) [2022-03-15 14:12:04,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:12:04,944 INFO L93 Difference]: Finished difference Result 22004 states and 62810 transitions. [2022-03-15 14:12:04,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-15 14:12:04,944 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 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 75 [2022-03-15 14:12:04,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:12:04,981 INFO L225 Difference]: With dead ends: 22004 [2022-03-15 14:12:04,981 INFO L226 Difference]: Without dead ends: 21899 [2022-03-15 14:12:04,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2611 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1247, Invalid=6409, Unknown=0, NotChecked=0, Total=7656 [2022-03-15 14:12:04,982 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 548 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:12:04,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [548 Valid, 1591 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:12:04,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21899 states. [2022-03-15 14:12:05,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21899 to 17596. [2022-03-15 14:12:05,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17596 states, 17595 states have (on average 2.8738846263142936) internal successors, (50566), 17595 states have internal predecessors, (50566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:12:05,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17596 states to 17596 states and 50566 transitions. [2022-03-15 14:12:05,309 INFO L78 Accepts]: Start accepts. Automaton has 17596 states and 50566 transitions. Word has length 75 [2022-03-15 14:12:05,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:12:05,309 INFO L470 AbstractCegarLoop]: Abstraction has 17596 states and 50566 transitions. [2022-03-15 14:12:05,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 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) [2022-03-15 14:12:05,309 INFO L276 IsEmpty]: Start isEmpty. Operand 17596 states and 50566 transitions. [2022-03-15 14:12:05,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:12:05,334 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:12:05,334 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:12:05,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-15 14:12:05,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:05,535 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:12:05,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:12:05,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1447491872, now seen corresponding path program 42 times [2022-03-15 14:12:05,535 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:12:05,535 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321282929] [2022-03-15 14:12:05,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:12:05,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:12:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:12:05,640 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:05,641 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:12:05,641 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321282929] [2022-03-15 14:12:05,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321282929] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:12:05,641 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644406124] [2022-03-15 14:12:05,641 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:12:05,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:05,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:12:05,642 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) [2022-03-15 14:12:05,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-15 14:12:05,726 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:12:05,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:12:05,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:12:05,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:12:05,882 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:05,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:12:06,050 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:06,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644406124] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:12:06,050 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:12:06,050 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 14:12:06,050 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320786158] [2022-03-15 14:12:06,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:12:06,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:12:06,051 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:12:06,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:12:06,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:12:06,051 INFO L87 Difference]: Start difference. First operand 17596 states and 50566 transitions. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 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) [2022-03-15 14:12:07,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:12:07,491 INFO L93 Difference]: Finished difference Result 20505 states and 58358 transitions. [2022-03-15 14:12:07,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-15 14:12:07,491 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 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 75 [2022-03-15 14:12:07,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:12:07,525 INFO L225 Difference]: With dead ends: 20505 [2022-03-15 14:12:07,526 INFO L226 Difference]: Without dead ends: 20457 [2022-03-15 14:12:07,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1266 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=734, Invalid=3298, Unknown=0, NotChecked=0, Total=4032 [2022-03-15 14:12:07,526 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 437 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:12:07,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 1423 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:12:07,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20457 states. [2022-03-15 14:12:07,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20457 to 18060. [2022-03-15 14:12:07,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18060 states, 18059 states have (on average 2.874024032338446) internal successors, (51902), 18059 states have internal predecessors, (51902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:12:07,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18060 states to 18060 states and 51902 transitions. [2022-03-15 14:12:07,843 INFO L78 Accepts]: Start accepts. Automaton has 18060 states and 51902 transitions. Word has length 75 [2022-03-15 14:12:07,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:12:07,843 INFO L470 AbstractCegarLoop]: Abstraction has 18060 states and 51902 transitions. [2022-03-15 14:12:07,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 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) [2022-03-15 14:12:07,843 INFO L276 IsEmpty]: Start isEmpty. Operand 18060 states and 51902 transitions. [2022-03-15 14:12:07,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:12:07,866 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:12:07,866 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:12:07,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-03-15 14:12:08,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:08,067 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:12:08,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:12:08,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1468209258, now seen corresponding path program 43 times [2022-03-15 14:12:08,067 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:12:08,067 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663068238] [2022-03-15 14:12:08,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:12:08,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:12:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:12:08,157 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:08,157 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:12:08,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663068238] [2022-03-15 14:12:08,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663068238] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:12:08,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164492666] [2022-03-15 14:12:08,158 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:12:08,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:08,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:12:08,159 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) [2022-03-15 14:12:08,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-15 14:12:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:12:08,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:12:08,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:12:08,357 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:08,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:12:08,540 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:08,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164492666] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:12:08,540 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:12:08,540 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:12:08,540 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108777037] [2022-03-15 14:12:08,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:12:08,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:12:08,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:12:08,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:12:08,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:12:08,541 INFO L87 Difference]: Start difference. First operand 18060 states and 51902 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) [2022-03-15 14:12:09,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:12:09,818 INFO L93 Difference]: Finished difference Result 21387 states and 60825 transitions. [2022-03-15 14:12:09,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 14:12:09,818 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 75 [2022-03-15 14:12:09,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:12:09,853 INFO L225 Difference]: With dead ends: 21387 [2022-03-15 14:12:09,854 INFO L226 Difference]: Without dead ends: 21327 [2022-03-15 14:12:09,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=645, Invalid=2325, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 14:12:09,854 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 436 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:12:09,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 1489 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:12:09,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21327 states. [2022-03-15 14:12:10,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21327 to 18008. [2022-03-15 14:12:10,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18008 states, 18007 states have (on average 2.8728272338535015) internal successors, (51731), 18007 states have internal predecessors, (51731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:12:10,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18008 states to 18008 states and 51731 transitions. [2022-03-15 14:12:10,181 INFO L78 Accepts]: Start accepts. Automaton has 18008 states and 51731 transitions. Word has length 75 [2022-03-15 14:12:10,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:12:10,181 INFO L470 AbstractCegarLoop]: Abstraction has 18008 states and 51731 transitions. [2022-03-15 14:12:10,181 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) [2022-03-15 14:12:10,181 INFO L276 IsEmpty]: Start isEmpty. Operand 18008 states and 51731 transitions. [2022-03-15 14:12:10,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:12:10,204 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:12:10,205 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:12:10,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-03-15 14:12:10,405 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,SelfDestructingSolverStorable53 [2022-03-15 14:12:10,405 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:12:10,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:12:10,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1149797152, now seen corresponding path program 44 times [2022-03-15 14:12:10,406 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:12:10,406 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548177674] [2022-03-15 14:12:10,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:12:10,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:12:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:12:10,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:10,490 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:12:10,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548177674] [2022-03-15 14:12:10,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548177674] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:12:10,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779492378] [2022-03-15 14:12:10,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:12:10,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:10,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:12:10,491 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) [2022-03-15 14:12:10,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-15 14:12:10,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:12:10,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:12:10,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:12:10,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:12:10,715 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:10,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:12:10,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:10,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779492378] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:12:10,879 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:12:10,879 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-15 14:12:10,879 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540164879] [2022-03-15 14:12:10,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:12:10,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 14:12:10,880 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:12:10,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 14:12:10,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-03-15 14:12:10,880 INFO L87 Difference]: Start difference. First operand 18008 states and 51731 transitions. Second operand has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 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) [2022-03-15 14:12:11,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:12:11,620 INFO L93 Difference]: Finished difference Result 18902 states and 54100 transitions. [2022-03-15 14:12:11,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-15 14:12:11,620 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 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 75 [2022-03-15 14:12:11,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:12:11,651 INFO L225 Difference]: With dead ends: 18902 [2022-03-15 14:12:11,652 INFO L226 Difference]: Without dead ends: 18830 [2022-03-15 14:12:11,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=319, Invalid=1573, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 14:12:11,652 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 240 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:12:11,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 1431 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:12:11,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18830 states. [2022-03-15 14:12:11,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18830 to 18028. [2022-03-15 14:12:11,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18028 states, 18027 states have (on average 2.872469074166528) internal successors, (51782), 18027 states have internal predecessors, (51782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:12:12,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18028 states to 18028 states and 51782 transitions. [2022-03-15 14:12:12,006 INFO L78 Accepts]: Start accepts. Automaton has 18028 states and 51782 transitions. Word has length 75 [2022-03-15 14:12:12,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:12:12,006 INFO L470 AbstractCegarLoop]: Abstraction has 18028 states and 51782 transitions. [2022-03-15 14:12:12,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 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) [2022-03-15 14:12:12,006 INFO L276 IsEmpty]: Start isEmpty. Operand 18028 states and 51782 transitions. [2022-03-15 14:12:12,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:12:12,029 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:12:12,029 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:12:12,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-03-15 14:12:12,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:12,230 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:12:12,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:12:12,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1333578238, now seen corresponding path program 45 times [2022-03-15 14:12:12,231 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:12:12,231 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146523957] [2022-03-15 14:12:12,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:12:12,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:12:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:12:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:12,319 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:12:12,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146523957] [2022-03-15 14:12:12,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146523957] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:12:12,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327724892] [2022-03-15 14:12:12,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:12:12,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:12,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:12:12,321 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) [2022-03-15 14:12:12,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-15 14:12:12,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:12:12,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:12:12,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:12:12,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:12:12,535 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:12,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:12:12,719 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:12,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327724892] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:12:12,720 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:12:12,720 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 14:12:12,720 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630513546] [2022-03-15 14:12:12,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:12:12,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:12:12,720 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:12:12,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:12:12,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:12:12,721 INFO L87 Difference]: Start difference. First operand 18028 states and 51782 transitions. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 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) [2022-03-15 14:12:14,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:12:14,203 INFO L93 Difference]: Finished difference Result 22013 states and 62717 transitions. [2022-03-15 14:12:14,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-15 14:12:14,204 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 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 75 [2022-03-15 14:12:14,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:12:14,240 INFO L225 Difference]: With dead ends: 22013 [2022-03-15 14:12:14,240 INFO L226 Difference]: Without dead ends: 21965 [2022-03-15 14:12:14,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1903 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=941, Invalid=4911, Unknown=0, NotChecked=0, Total=5852 [2022-03-15 14:12:14,242 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 486 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:12:14,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1242 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:12:14,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21965 states. [2022-03-15 14:12:14,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21965 to 18656. [2022-03-15 14:12:14,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18656 states, 18655 states have (on average 2.874135620477084) internal successors, (53617), 18655 states have internal predecessors, (53617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:12:14,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18656 states to 18656 states and 53617 transitions. [2022-03-15 14:12:14,631 INFO L78 Accepts]: Start accepts. Automaton has 18656 states and 53617 transitions. Word has length 75 [2022-03-15 14:12:14,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:12:14,631 INFO L470 AbstractCegarLoop]: Abstraction has 18656 states and 53617 transitions. [2022-03-15 14:12:14,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 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) [2022-03-15 14:12:14,631 INFO L276 IsEmpty]: Start isEmpty. Operand 18656 states and 53617 transitions. [2022-03-15 14:12:14,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:12:14,655 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:12:14,655 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:12:14,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-03-15 14:12:14,856 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,SelfDestructingSolverStorable55 [2022-03-15 14:12:14,856 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:12:14,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:12:14,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1312860852, now seen corresponding path program 46 times [2022-03-15 14:12:14,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:12:14,857 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049867750] [2022-03-15 14:12:14,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:12:14,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:12:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:12:14,942 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:14,942 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:12:14,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049867750] [2022-03-15 14:12:14,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049867750] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:12:14,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732512521] [2022-03-15 14:12:14,942 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:12:14,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:14,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:12:14,943 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) [2022-03-15 14:12:14,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-15 14:12:15,013 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:12:15,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:12:15,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:12:15,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:12:15,140 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:15,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:12:15,317 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:15,317 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732512521] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:12:15,317 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:12:15,317 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:12:15,317 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081206590] [2022-03-15 14:12:15,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:12:15,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:12:15,318 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:12:15,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:12:15,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:12:15,318 INFO L87 Difference]: Start difference. First operand 18656 states and 53617 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) [2022-03-15 14:12:18,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:12:18,312 INFO L93 Difference]: Finished difference Result 23691 states and 67298 transitions. [2022-03-15 14:12:18,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-03-15 14:12:18,312 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 75 [2022-03-15 14:12:18,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:12:18,348 INFO L225 Difference]: With dead ends: 23691 [2022-03-15 14:12:18,348 INFO L226 Difference]: Without dead ends: 23631 [2022-03-15 14:12:18,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4120 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1898, Invalid=9444, Unknown=0, NotChecked=0, Total=11342 [2022-03-15 14:12:18,349 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 674 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:12:18,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 2050 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:12:18,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23631 states. [2022-03-15 14:12:18,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23631 to 18820. [2022-03-15 14:12:18,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18820 states, 18819 states have (on average 2.874966788883575) internal successors, (54104), 18819 states have internal predecessors, (54104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:12:18,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18820 states to 18820 states and 54104 transitions. [2022-03-15 14:12:18,698 INFO L78 Accepts]: Start accepts. Automaton has 18820 states and 54104 transitions. Word has length 75 [2022-03-15 14:12:18,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:12:18,698 INFO L470 AbstractCegarLoop]: Abstraction has 18820 states and 54104 transitions. [2022-03-15 14:12:18,699 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) [2022-03-15 14:12:18,699 INFO L276 IsEmpty]: Start isEmpty. Operand 18820 states and 54104 transitions. [2022-03-15 14:12:18,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:12:18,725 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:12:18,725 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:12:18,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-03-15 14:12:18,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:18,926 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:12:18,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:12:18,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1711089810, now seen corresponding path program 47 times [2022-03-15 14:12:18,926 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:12:18,926 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914239340] [2022-03-15 14:12:18,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:12:18,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:12:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:12:19,023 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:19,023 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:12:19,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914239340] [2022-03-15 14:12:19,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914239340] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:12:19,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972731954] [2022-03-15 14:12:19,023 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:12:19,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:19,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:12:19,025 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) [2022-03-15 14:12:19,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-15 14:12:19,103 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:12:19,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:12:19,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:12:19,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:12:19,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:19,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:12:19,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:19,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972731954] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:12:19,414 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:12:19,414 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 14:12:19,414 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410252036] [2022-03-15 14:12:19,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:12:19,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:12:19,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:12:19,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:12:19,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:12:19,414 INFO L87 Difference]: Start difference. First operand 18820 states and 54104 transitions. Second operand has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 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) [2022-03-15 14:12:21,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:12:21,349 INFO L93 Difference]: Finished difference Result 22773 states and 65043 transitions. [2022-03-15 14:12:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-03-15 14:12:21,350 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 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 75 [2022-03-15 14:12:21,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:12:21,388 INFO L225 Difference]: With dead ends: 22773 [2022-03-15 14:12:21,388 INFO L226 Difference]: Without dead ends: 22668 [2022-03-15 14:12:21,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2182 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1133, Invalid=5673, Unknown=0, NotChecked=0, Total=6806 [2022-03-15 14:12:21,388 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 449 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:12:21,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 1645 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:12:21,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22668 states. [2022-03-15 14:12:21,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22668 to 19184. [2022-03-15 14:12:21,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19184 states, 19183 states have (on average 2.8723870093311787) internal successors, (55101), 19183 states have internal predecessors, (55101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:12:21,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19184 states to 19184 states and 55101 transitions. [2022-03-15 14:12:21,732 INFO L78 Accepts]: Start accepts. Automaton has 19184 states and 55101 transitions. Word has length 75 [2022-03-15 14:12:21,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:12:21,733 INFO L470 AbstractCegarLoop]: Abstraction has 19184 states and 55101 transitions. [2022-03-15 14:12:21,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 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) [2022-03-15 14:12:21,733 INFO L276 IsEmpty]: Start isEmpty. Operand 19184 states and 55101 transitions. [2022-03-15 14:12:21,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:12:21,757 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:12:21,757 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:12:21,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-03-15 14:12:21,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:21,958 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:12:21,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:12:21,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1176622436, now seen corresponding path program 48 times [2022-03-15 14:12:21,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:12:21,958 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565971783] [2022-03-15 14:12:21,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:12:21,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:12:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:12:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:22,058 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:12:22,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565971783] [2022-03-15 14:12:22,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565971783] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:12:22,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093051409] [2022-03-15 14:12:22,059 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:12:22,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:22,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:12:22,064 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) [2022-03-15 14:12:22,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-15 14:12:22,157 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:12:22,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:12:22,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:12:22,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:12:22,322 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:22,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:12:22,503 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:22,504 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093051409] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:12:22,504 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:12:22,504 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 14:12:22,504 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146837979] [2022-03-15 14:12:22,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:12:22,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:12:22,504 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:12:22,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:12:22,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:12:22,504 INFO L87 Difference]: Start difference. First operand 19184 states and 55101 transitions. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 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) [2022-03-15 14:12:23,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:12:23,630 INFO L93 Difference]: Finished difference Result 22162 states and 63098 transitions. [2022-03-15 14:12:23,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-15 14:12:23,630 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 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 75 [2022-03-15 14:12:23,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:12:23,756 INFO L225 Difference]: With dead ends: 22162 [2022-03-15 14:12:23,757 INFO L226 Difference]: Without dead ends: 22114 [2022-03-15 14:12:23,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=605, Invalid=2935, Unknown=0, NotChecked=0, Total=3540 [2022-03-15 14:12:23,758 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 457 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:12:23,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 1475 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:12:23,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22114 states. [2022-03-15 14:12:24,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22114 to 19912. [2022-03-15 14:12:24,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19912 states, 19911 states have (on average 2.8705238310481644) internal successors, (57155), 19911 states have internal predecessors, (57155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:12:24,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19912 states to 19912 states and 57155 transitions. [2022-03-15 14:12:24,088 INFO L78 Accepts]: Start accepts. Automaton has 19912 states and 57155 transitions. Word has length 75 [2022-03-15 14:12:24,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:12:24,088 INFO L470 AbstractCegarLoop]: Abstraction has 19912 states and 57155 transitions. [2022-03-15 14:12:24,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 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) [2022-03-15 14:12:24,089 INFO L276 IsEmpty]: Start isEmpty. Operand 19912 states and 57155 transitions. [2022-03-15 14:12:24,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:12:24,115 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:12:24,115 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:12:24,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-03-15 14:12:24,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-03-15 14:12:24,315 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:12:24,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:12:24,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1197339822, now seen corresponding path program 49 times [2022-03-15 14:12:24,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:12:24,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248911654] [2022-03-15 14:12:24,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:12:24,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:12:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:12:24,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:24,405 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:12:24,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248911654] [2022-03-15 14:12:24,405 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248911654] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:12:24,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936660443] [2022-03-15 14:12:24,405 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:12:24,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:24,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:12:24,406 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) [2022-03-15 14:12:24,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-15 14:12:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:12:24,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:12:24,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:12:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:24,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:12:24,825 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:24,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936660443] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:12:24,825 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:12:24,825 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:12:24,825 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501637007] [2022-03-15 14:12:24,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:12:24,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:12:24,826 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:12:24,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:12:24,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:12:24,826 INFO L87 Difference]: Start difference. First operand 19912 states and 57155 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) [2022-03-15 14:12:26,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:12:26,335 INFO L93 Difference]: Finished difference Result 24111 states and 68592 transitions. [2022-03-15 14:12:26,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-15 14:12:26,335 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 75 [2022-03-15 14:12:26,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:12:26,377 INFO L225 Difference]: With dead ends: 24111 [2022-03-15 14:12:26,378 INFO L226 Difference]: Without dead ends: 24051 [2022-03-15 14:12:26,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1217 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=805, Invalid=3485, Unknown=0, NotChecked=0, Total=4290 [2022-03-15 14:12:26,378 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 446 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:12:26,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 1896 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:12:26,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24051 states. [2022-03-15 14:12:26,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24051 to 20240. [2022-03-15 14:12:26,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20240 states, 20239 states have (on average 2.870151687336331) internal successors, (58089), 20239 states have internal predecessors, (58089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:12:26,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20240 states to 20240 states and 58089 transitions. [2022-03-15 14:12:26,802 INFO L78 Accepts]: Start accepts. Automaton has 20240 states and 58089 transitions. Word has length 75 [2022-03-15 14:12:26,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:12:26,802 INFO L470 AbstractCegarLoop]: Abstraction has 20240 states and 58089 transitions. [2022-03-15 14:12:26,802 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) [2022-03-15 14:12:26,802 INFO L276 IsEmpty]: Start isEmpty. Operand 20240 states and 58089 transitions. [2022-03-15 14:12:26,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:12:26,830 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:12:26,830 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:12:26,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-15 14:12:27,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-03-15 14:12:27,031 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:12:27,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:12:27,031 INFO L85 PathProgramCache]: Analyzing trace with hash 878927716, now seen corresponding path program 50 times [2022-03-15 14:12:27,031 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:12:27,031 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200621083] [2022-03-15 14:12:27,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:12:27,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:12:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:12:27,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:27,112 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:12:27,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200621083] [2022-03-15 14:12:27,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200621083] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:12:27,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008497695] [2022-03-15 14:12:27,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:12:27,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:27,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:12:27,113 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) [2022-03-15 14:12:27,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-15 14:12:27,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:12:27,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:12:27,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:12:27,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:12:27,332 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:27,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:12:27,503 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:27,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008497695] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:12:27,503 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:12:27,503 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-15 14:12:27,504 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108739256] [2022-03-15 14:12:27,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:12:27,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 14:12:27,504 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:12:27,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 14:12:27,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-03-15 14:12:27,504 INFO L87 Difference]: Start difference. First operand 20240 states and 58089 transitions. Second operand has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 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) [2022-03-15 14:12:28,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:12:28,205 INFO L93 Difference]: Finished difference Result 21080 states and 60318 transitions. [2022-03-15 14:12:28,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:12:28,205 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 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 75 [2022-03-15 14:12:28,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:12:28,243 INFO L225 Difference]: With dead ends: 21080 [2022-03-15 14:12:28,244 INFO L226 Difference]: Without dead ends: 21008 [2022-03-15 14:12:28,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=301, Invalid=1591, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 14:12:28,244 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 288 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:12:28,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 1358 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:12:28,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21008 states. [2022-03-15 14:12:28,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21008 to 20256. [2022-03-15 14:12:28,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20256 states, 20255 states have (on average 2.8698592940014813) internal successors, (58129), 20255 states have internal predecessors, (58129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:12:28,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20256 states to 20256 states and 58129 transitions. [2022-03-15 14:12:28,684 INFO L78 Accepts]: Start accepts. Automaton has 20256 states and 58129 transitions. Word has length 75 [2022-03-15 14:12:28,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:12:28,684 INFO L470 AbstractCegarLoop]: Abstraction has 20256 states and 58129 transitions. [2022-03-15 14:12:28,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 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) [2022-03-15 14:12:28,684 INFO L276 IsEmpty]: Start isEmpty. Operand 20256 states and 58129 transitions. [2022-03-15 14:12:28,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:12:28,710 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:12:28,711 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:12:28,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-15 14:12:28,911 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,SelfDestructingSolverStorable60 [2022-03-15 14:12:28,911 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:12:28,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:12:28,912 INFO L85 PathProgramCache]: Analyzing trace with hash 681668142, now seen corresponding path program 51 times [2022-03-15 14:12:28,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:12:28,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398527016] [2022-03-15 14:12:28,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:12:28,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:12:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:12:29,008 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:29,008 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:12:29,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398527016] [2022-03-15 14:12:29,009 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398527016] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:12:29,009 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365855510] [2022-03-15 14:12:29,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:12:29,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:29,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:12:29,010 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) [2022-03-15 14:12:29,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-15 14:12:29,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:12:29,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:12:29,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:12:29,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:12:29,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:29,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:12:29,405 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:29,405 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365855510] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:12:29,405 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:12:29,405 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:12:29,405 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832169827] [2022-03-15 14:12:29,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:12:29,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:12:29,406 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:12:29,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:12:29,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:12:29,406 INFO L87 Difference]: Start difference. First operand 20256 states and 58129 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) [2022-03-15 14:12:30,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:12:30,967 INFO L93 Difference]: Finished difference Result 25665 states and 73225 transitions. [2022-03-15 14:12:30,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-15 14:12:30,967 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 75 [2022-03-15 14:12:30,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:12:31,020 INFO L225 Difference]: With dead ends: 25665 [2022-03-15 14:12:31,020 INFO L226 Difference]: Without dead ends: 25617 [2022-03-15 14:12:31,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=656, Invalid=2766, Unknown=0, NotChecked=0, Total=3422 [2022-03-15 14:12:31,021 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 465 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:12:31,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 1548 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:12:31,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25617 states. [2022-03-15 14:12:31,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25617 to 22132. [2022-03-15 14:12:31,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22132 states, 22131 states have (on average 2.8727124847498984) internal successors, (63576), 22131 states have internal predecessors, (63576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:12:31,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22132 states to 22132 states and 63576 transitions. [2022-03-15 14:12:31,481 INFO L78 Accepts]: Start accepts. Automaton has 22132 states and 63576 transitions. Word has length 75 [2022-03-15 14:12:31,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:12:31,481 INFO L470 AbstractCegarLoop]: Abstraction has 22132 states and 63576 transitions. [2022-03-15 14:12:31,481 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) [2022-03-15 14:12:31,481 INFO L276 IsEmpty]: Start isEmpty. Operand 22132 states and 63576 transitions. [2022-03-15 14:12:31,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:12:31,511 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:12:31,512 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:12:31,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-03-15 14:12:31,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:31,712 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:12:31,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:12:31,713 INFO L85 PathProgramCache]: Analyzing trace with hash 702385528, now seen corresponding path program 52 times [2022-03-15 14:12:31,713 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:12:31,713 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872686130] [2022-03-15 14:12:31,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:12:31,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:12:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:12:31,821 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:31,821 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:12:31,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872686130] [2022-03-15 14:12:31,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872686130] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:12:31,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611698265] [2022-03-15 14:12:31,821 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:12:31,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:31,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:12:31,824 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) [2022-03-15 14:12:31,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-15 14:12:31,902 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:12:31,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:12:31,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:12:31,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:12:32,039 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:32,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:12:32,217 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:32,217 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611698265] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:12:32,217 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:12:32,217 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-03-15 14:12:32,217 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691198826] [2022-03-15 14:12:32,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:12:32,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:12:32,218 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:12:32,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:12:32,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:12:32,218 INFO L87 Difference]: Start difference. First operand 22132 states and 63576 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 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) [2022-03-15 14:12:33,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:12:33,488 INFO L93 Difference]: Finished difference Result 25750 states and 73381 transitions. [2022-03-15 14:12:33,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 14:12:33,488 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 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 75 [2022-03-15 14:12:33,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:12:33,541 INFO L225 Difference]: With dead ends: 25750 [2022-03-15 14:12:33,541 INFO L226 Difference]: Without dead ends: 25690 [2022-03-15 14:12:33,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=707, Invalid=2833, Unknown=0, NotChecked=0, Total=3540 [2022-03-15 14:12:33,542 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 618 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:12:33,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 1390 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:12:33,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25690 states. [2022-03-15 14:12:33,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25690 to 21240. [2022-03-15 14:12:33,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21240 states, 21239 states have (on average 2.8690145487075664) internal successors, (60935), 21239 states have internal predecessors, (60935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:12:34,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21240 states to 21240 states and 60935 transitions. [2022-03-15 14:12:34,026 INFO L78 Accepts]: Start accepts. Automaton has 21240 states and 60935 transitions. Word has length 75 [2022-03-15 14:12:34,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:12:34,027 INFO L470 AbstractCegarLoop]: Abstraction has 21240 states and 60935 transitions. [2022-03-15 14:12:34,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 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) [2022-03-15 14:12:34,027 INFO L276 IsEmpty]: Start isEmpty. Operand 21240 states and 60935 transitions. [2022-03-15 14:12:34,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:12:34,054 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:12:34,054 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:12:34,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-03-15 14:12:34,255 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,SelfDestructingSolverStorable62 [2022-03-15 14:12:34,255 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:12:34,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:12:34,256 INFO L85 PathProgramCache]: Analyzing trace with hash 383973422, now seen corresponding path program 53 times [2022-03-15 14:12:34,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:12:34,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995278168] [2022-03-15 14:12:34,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:12:34,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:12:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:12:34,354 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:34,354 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:12:34,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995278168] [2022-03-15 14:12:34,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995278168] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:12:34,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777969705] [2022-03-15 14:12:34,355 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:12:34,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:34,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:12:34,356 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) [2022-03-15 14:12:34,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-15 14:12:34,432 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:12:34,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:12:34,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:12:34,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:12:34,576 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:34,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:12:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:34,749 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777969705] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:12:34,749 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:12:34,749 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 14:12:34,749 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410819037] [2022-03-15 14:12:34,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:12:34,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:12:34,749 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:12:34,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:12:34,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:12:34,750 INFO L87 Difference]: Start difference. First operand 21240 states and 60935 transitions. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 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) [2022-03-15 14:12:35,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:12:35,516 INFO L93 Difference]: Finished difference Result 22388 states and 63935 transitions. [2022-03-15 14:12:35,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 14:12:35,516 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 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 75 [2022-03-15 14:12:35,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:12:35,557 INFO L225 Difference]: With dead ends: 22388 [2022-03-15 14:12:35,557 INFO L226 Difference]: Without dead ends: 22316 [2022-03-15 14:12:35,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=339, Invalid=1553, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 14:12:35,558 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 331 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:12:35,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 1369 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:12:35,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22316 states. [2022-03-15 14:12:35,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22316 to 21248. [2022-03-15 14:12:35,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21248 states, 21247 states have (on average 2.8691579987762976) internal successors, (60961), 21247 states have internal predecessors, (60961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:12:35,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21248 states to 21248 states and 60961 transitions. [2022-03-15 14:12:35,986 INFO L78 Accepts]: Start accepts. Automaton has 21248 states and 60961 transitions. Word has length 75 [2022-03-15 14:12:35,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:12:35,987 INFO L470 AbstractCegarLoop]: Abstraction has 21248 states and 60961 transitions. [2022-03-15 14:12:35,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 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) [2022-03-15 14:12:35,987 INFO L276 IsEmpty]: Start isEmpty. Operand 21248 states and 60961 transitions. [2022-03-15 14:12:36,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-15 14:12:36,016 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:12:36,016 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:12:36,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-15 14:12:36,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:36,217 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:12:36,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:12:36,217 INFO L85 PathProgramCache]: Analyzing trace with hash 617413212, now seen corresponding path program 54 times [2022-03-15 14:12:36,217 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:12:36,217 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776741102] [2022-03-15 14:12:36,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:12:36,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:12:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:12:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:36,307 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:12:36,307 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776741102] [2022-03-15 14:12:36,307 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776741102] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:12:36,307 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41750837] [2022-03-15 14:12:36,307 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:12:36,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:36,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:12:36,308 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) [2022-03-15 14:12:36,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-15 14:12:36,409 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:12:36,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:12:36,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:12:36,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:12:36,562 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:36,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:12:36,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:36,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41750837] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:12:36,735 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:12:36,735 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-15 14:12:36,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655145419] [2022-03-15 14:12:36,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:12:36,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 14:12:36,736 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:12:36,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 14:12:36,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-03-15 14:12:36,736 INFO L87 Difference]: Start difference. First operand 21248 states and 60961 transitions. Second operand has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 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) [2022-03-15 14:12:37,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:12:37,145 INFO L93 Difference]: Finished difference Result 21972 states and 62883 transitions. [2022-03-15 14:12:37,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 14:12:37,147 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 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 75 [2022-03-15 14:12:37,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:12:37,187 INFO L225 Difference]: With dead ends: 21972 [2022-03-15 14:12:37,188 INFO L226 Difference]: Without dead ends: 21924 [2022-03-15 14:12:37,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2022-03-15 14:12:37,188 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 242 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:12:37,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 1122 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:12:37,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21924 states. [2022-03-15 14:12:37,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21924 to 21240. [2022-03-15 14:12:37,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21240 states, 21239 states have (on average 2.8690145487075664) internal successors, (60935), 21239 states have internal predecessors, (60935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:12:37,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21240 states to 21240 states and 60935 transitions. [2022-03-15 14:12:37,609 INFO L78 Accepts]: Start accepts. Automaton has 21240 states and 60935 transitions. Word has length 75 [2022-03-15 14:12:37,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:12:37,609 INFO L470 AbstractCegarLoop]: Abstraction has 21240 states and 60935 transitions. [2022-03-15 14:12:37,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 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) [2022-03-15 14:12:37,609 INFO L276 IsEmpty]: Start isEmpty. Operand 21240 states and 60935 transitions. [2022-03-15 14:12:37,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-15 14:12:37,638 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:12:37,638 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:12:37,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-03-15 14:12:37,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:37,839 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:12:37,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:12:37,839 INFO L85 PathProgramCache]: Analyzing trace with hash 710815400, now seen corresponding path program 55 times [2022-03-15 14:12:37,840 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:12:37,840 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928010516] [2022-03-15 14:12:37,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:12:37,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:12:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:12:37,919 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:12:37,919 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:12:37,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928010516] [2022-03-15 14:12:37,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928010516] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:12:37,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62786364] [2022-03-15 14:12:37,919 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:12:37,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:37,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:12:37,924 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) [2022-03-15 14:12:37,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-15 14:12:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:12:38,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:12:38,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:12:38,192 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:12:38,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:12:38,371 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:12:38,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62786364] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:12:38,371 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:12:38,371 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 11 [2022-03-15 14:12:38,371 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142326931] [2022-03-15 14:12:38,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:12:38,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 14:12:38,372 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:12:38,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 14:12:38,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-15 14:12:38,372 INFO L87 Difference]: Start difference. First operand 21240 states and 60935 transitions. Second operand has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:12:38,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:12:38,636 INFO L93 Difference]: Finished difference Result 35624 states and 103549 transitions. [2022-03-15 14:12:38,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 14:12:38,636 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-03-15 14:12:38,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:12:38,733 INFO L225 Difference]: With dead ends: 35624 [2022-03-15 14:12:38,734 INFO L226 Difference]: Without dead ends: 35321 [2022-03-15 14:12:38,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:12:38,734 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 125 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:12:38,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 828 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:12:38,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35321 states. [2022-03-15 14:12:39,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35321 to 29881. [2022-03-15 14:12:39,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29881 states, 29880 states have (on average 2.897657295850067) internal successors, (86582), 29880 states have internal predecessors, (86582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:12:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29881 states to 29881 states and 86582 transitions. [2022-03-15 14:12:39,538 INFO L78 Accepts]: Start accepts. Automaton has 29881 states and 86582 transitions. Word has length 80 [2022-03-15 14:12:39,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:12:39,538 INFO L470 AbstractCegarLoop]: Abstraction has 29881 states and 86582 transitions. [2022-03-15 14:12:39,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:12:39,538 INFO L276 IsEmpty]: Start isEmpty. Operand 29881 states and 86582 transitions. [2022-03-15 14:12:39,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:12:39,583 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:12:39,583 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:12:39,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-15 14:12:39,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:39,783 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:12:39,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:12:39,784 INFO L85 PathProgramCache]: Analyzing trace with hash -58756830, now seen corresponding path program 56 times [2022-03-15 14:12:39,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:12:39,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247389532] [2022-03-15 14:12:39,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:12:39,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:12:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:12:40,040 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:40,041 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:12:40,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247389532] [2022-03-15 14:12:40,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247389532] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:12:40,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655538292] [2022-03-15 14:12:40,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:12:40,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:40,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:12:40,042 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) [2022-03-15 14:12:40,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-15 14:12:40,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:12:40,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:12:40,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:12:40,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:12:40,397 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:40,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:12:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:40,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655538292] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:12:40,786 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:12:40,786 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-15 14:12:40,786 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617027369] [2022-03-15 14:12:40,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:12:40,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:12:40,786 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:12:40,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:12:40,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:12:40,787 INFO L87 Difference]: Start difference. First operand 29881 states and 86582 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:12:53,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:12:53,958 INFO L93 Difference]: Finished difference Result 45744 states and 130515 transitions. [2022-03-15 14:12:53,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-03-15 14:12:53,959 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:12:53,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:12:54,067 INFO L225 Difference]: With dead ends: 45744 [2022-03-15 14:12:54,068 INFO L226 Difference]: Without dead ends: 45174 [2022-03-15 14:12:54,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13480 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=4705, Invalid=30827, Unknown=0, NotChecked=0, Total=35532 [2022-03-15 14:12:54,073 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 2400 mSDsluCounter, 4532 mSDsCounter, 0 mSdLazyCounter, 2576 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2400 SdHoareTripleChecker+Valid, 4290 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 2576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:12:54,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2400 Valid, 4290 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 2576 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-15 14:12:54,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45174 states. [2022-03-15 14:12:54,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45174 to 32125. [2022-03-15 14:12:54,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32125 states, 32124 states have (on average 2.8950628813348276) internal successors, (93001), 32124 states have internal predecessors, (93001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:12:54,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32125 states to 32125 states and 93001 transitions. [2022-03-15 14:12:54,887 INFO L78 Accepts]: Start accepts. Automaton has 32125 states and 93001 transitions. Word has length 85 [2022-03-15 14:12:54,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:12:54,887 INFO L470 AbstractCegarLoop]: Abstraction has 32125 states and 93001 transitions. [2022-03-15 14:12:54,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:12:54,887 INFO L276 IsEmpty]: Start isEmpty. Operand 32125 states and 93001 transitions. [2022-03-15 14:12:54,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:12:54,937 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:12:54,937 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:12:54,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-03-15 14:12:55,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:55,138 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:12:55,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:12:55,138 INFO L85 PathProgramCache]: Analyzing trace with hash -101477990, now seen corresponding path program 57 times [2022-03-15 14:12:55,138 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:12:55,138 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61787941] [2022-03-15 14:12:55,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:12:55,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:12:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:12:55,323 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:55,323 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:12:55,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61787941] [2022-03-15 14:12:55,323 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61787941] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:12:55,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22577367] [2022-03-15 14:12:55,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:12:55,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:12:55,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:12:55,324 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) [2022-03-15 14:12:55,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-15 14:12:55,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:12:55,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:12:55,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:12:55,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:12:55,854 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:55,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:12:56,213 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:12:56,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22577367] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:12:56,214 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:12:56,214 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-03-15 14:12:56,214 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236004907] [2022-03-15 14:12:56,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:12:56,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 14:12:56,214 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:12:56,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 14:12:56,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2022-03-15 14:12:56,215 INFO L87 Difference]: Start difference. First operand 32125 states and 93001 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:13:13,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:13:13,926 INFO L93 Difference]: Finished difference Result 41564 states and 118888 transitions. [2022-03-15 14:13:13,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-03-15 14:13:13,927 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:13:13,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:13:14,005 INFO L225 Difference]: With dead ends: 41564 [2022-03-15 14:13:14,005 INFO L226 Difference]: Without dead ends: 41468 [2022-03-15 14:13:14,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10995 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=3772, Invalid=25640, Unknown=0, NotChecked=0, Total=29412 [2022-03-15 14:13:14,008 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 1196 mSDsluCounter, 4356 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 4204 SdHoareTripleChecker+Invalid, 2574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:13:14,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1196 Valid, 4204 Invalid, 2574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-15 14:13:14,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41468 states. [2022-03-15 14:13:14,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41468 to 34425. [2022-03-15 14:13:14,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34425 states, 34424 states have (on average 2.8923425517081105) internal successors, (99566), 34424 states have internal predecessors, (99566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:13:14,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34425 states to 34425 states and 99566 transitions. [2022-03-15 14:13:14,735 INFO L78 Accepts]: Start accepts. Automaton has 34425 states and 99566 transitions. Word has length 85 [2022-03-15 14:13:14,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:13:14,735 INFO L470 AbstractCegarLoop]: Abstraction has 34425 states and 99566 transitions. [2022-03-15 14:13:14,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:13:14,736 INFO L276 IsEmpty]: Start isEmpty. Operand 34425 states and 99566 transitions. [2022-03-15 14:13:14,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:13:14,784 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:13:14,785 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:13:14,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-03-15 14:13:14,985 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,SelfDestructingSolverStorable67 [2022-03-15 14:13:14,985 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:13:14,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:13:14,985 INFO L85 PathProgramCache]: Analyzing trace with hash -80760604, now seen corresponding path program 58 times [2022-03-15 14:13:14,985 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:13:14,986 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949465090] [2022-03-15 14:13:14,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:13:14,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:13:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:13:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:13:15,217 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:13:15,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949465090] [2022-03-15 14:13:15,217 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949465090] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:13:15,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534613690] [2022-03-15 14:13:15,217 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:13:15,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:13:15,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:13:15,220 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) [2022-03-15 14:13:15,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-15 14:13:15,316 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:13:15,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:13:15,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:13:15,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:13:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:13:15,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:13:15,993 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:13:15,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534613690] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:13:15,993 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:13:15,993 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-15 14:13:15,993 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741279100] [2022-03-15 14:13:15,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:13:15,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:13:15,994 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:13:15,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:13:15,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:13:15,994 INFO L87 Difference]: Start difference. First operand 34425 states and 99566 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:13:48,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:13:48,966 INFO L93 Difference]: Finished difference Result 48154 states and 137808 transitions. [2022-03-15 14:13:48,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2022-03-15 14:13:48,966 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:13:48,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:13:49,060 INFO L225 Difference]: With dead ends: 48154 [2022-03-15 14:13:49,060 INFO L226 Difference]: Without dead ends: 48064 [2022-03-15 14:13:49,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22015 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=7064, Invalid=47458, Unknown=0, NotChecked=0, Total=54522 [2022-03-15 14:13:49,063 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 2138 mSDsluCounter, 4604 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2138 SdHoareTripleChecker+Valid, 4459 SdHoareTripleChecker+Invalid, 2599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:13:49,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2138 Valid, 4459 Invalid, 2599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-03-15 14:13:49,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48064 states. [2022-03-15 14:13:49,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48064 to 36521. [2022-03-15 14:13:49,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36521 states, 36520 states have (on average 2.894687842278204) internal successors, (105714), 36520 states have internal predecessors, (105714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:13:49,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36521 states to 36521 states and 105714 transitions. [2022-03-15 14:13:49,867 INFO L78 Accepts]: Start accepts. Automaton has 36521 states and 105714 transitions. Word has length 85 [2022-03-15 14:13:49,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:13:49,867 INFO L470 AbstractCegarLoop]: Abstraction has 36521 states and 105714 transitions. [2022-03-15 14:13:49,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:13:49,867 INFO L276 IsEmpty]: Start isEmpty. Operand 36521 states and 105714 transitions. [2022-03-15 14:13:49,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:13:49,919 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:13:49,919 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:13:49,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-03-15 14:13:50,119 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,SelfDestructingSolverStorable68 [2022-03-15 14:13:50,120 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:13:50,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:13:50,120 INFO L85 PathProgramCache]: Analyzing trace with hash -478989562, now seen corresponding path program 59 times [2022-03-15 14:13:50,120 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:13:50,120 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144097338] [2022-03-15 14:13:50,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:13:50,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:13:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:13:50,353 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:13:50,353 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:13:50,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144097338] [2022-03-15 14:13:50,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144097338] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:13:50,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380995399] [2022-03-15 14:13:50,354 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:13:50,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:13:50,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:13:50,355 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) [2022-03-15 14:13:50,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-15 14:13:50,480 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 14:13:50,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:13:50,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:13:50,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:13:50,964 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:13:50,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:13:51,503 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:13:51,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380995399] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:13:51,503 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:13:51,503 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-15 14:13:51,503 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014342133] [2022-03-15 14:13:51,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:13:51,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:13:51,504 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:13:51,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:13:51,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=955, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:13:51,504 INFO L87 Difference]: Start difference. First operand 36521 states and 105714 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:14:23,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:14:23,224 INFO L93 Difference]: Finished difference Result 50104 states and 143276 transitions. [2022-03-15 14:14:23,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 266 states. [2022-03-15 14:14:23,225 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:14:23,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:14:23,328 INFO L225 Difference]: With dead ends: 50104 [2022-03-15 14:14:23,328 INFO L226 Difference]: Without dead ends: 49879 [2022-03-15 14:14:23,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32669 ImplicationChecksByTransitivity, 29.0s TimeCoverageRelationStatistics Valid=8805, Invalid=69315, Unknown=0, NotChecked=0, Total=78120 [2022-03-15 14:14:23,332 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 1859 mSDsluCounter, 5844 mSDsCounter, 0 mSdLazyCounter, 3072 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 5658 SdHoareTripleChecker+Invalid, 3393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 3072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:14:23,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1859 Valid, 5658 Invalid, 3393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 3072 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-03-15 14:14:23,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49879 states. [2022-03-15 14:14:24,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49879 to 37749. [2022-03-15 14:14:24,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37749 states, 37748 states have (on average 2.890722687294691) internal successors, (109119), 37748 states have internal predecessors, (109119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:14:24,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37749 states to 37749 states and 109119 transitions. [2022-03-15 14:14:24,309 INFO L78 Accepts]: Start accepts. Automaton has 37749 states and 109119 transitions. Word has length 85 [2022-03-15 14:14:24,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:14:24,309 INFO L470 AbstractCegarLoop]: Abstraction has 37749 states and 109119 transitions. [2022-03-15 14:14:24,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:14:24,310 INFO L276 IsEmpty]: Start isEmpty. Operand 37749 states and 109119 transitions. [2022-03-15 14:14:24,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:14:24,363 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:14:24,363 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:14:24,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-03-15 14:14:24,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-03-15 14:14:24,564 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:14:24,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:14:24,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1886244612, now seen corresponding path program 60 times [2022-03-15 14:14:24,564 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:14:24,564 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676158747] [2022-03-15 14:14:24,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:14:24,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:14:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:14:24,755 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:14:24,755 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:14:24,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676158747] [2022-03-15 14:14:24,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676158747] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:14:24,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561806109] [2022-03-15 14:14:24,756 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:14:24,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:14:24,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:14:24,757 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) [2022-03-15 14:14:24,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-15 14:14:24,865 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:14:24,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:14:24,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:14:24,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:14:25,138 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:14:25,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:14:25,495 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:14:25,495 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561806109] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:14:25,495 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:14:25,495 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-03-15 14:14:25,496 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259669014] [2022-03-15 14:14:25,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:14:25,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 14:14:25,496 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:14:25,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 14:14:25,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=874, Unknown=0, NotChecked=0, Total=992 [2022-03-15 14:14:25,496 INFO L87 Difference]: Start difference. First operand 37749 states and 109119 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:14:42,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:14:42,208 INFO L93 Difference]: Finished difference Result 49124 states and 140439 transitions. [2022-03-15 14:14:42,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-03-15 14:14:42,208 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:14:42,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:14:42,308 INFO L225 Difference]: With dead ends: 49124 [2022-03-15 14:14:42,308 INFO L226 Difference]: Without dead ends: 49052 [2022-03-15 14:14:42,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9222 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=3353, Invalid=22407, Unknown=0, NotChecked=0, Total=25760 [2022-03-15 14:14:42,310 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 1256 mSDsluCounter, 4004 mSDsCounter, 0 mSdLazyCounter, 2241 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 3868 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:14:42,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1256 Valid, 3868 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2241 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-15 14:14:42,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49052 states. [2022-03-15 14:14:43,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49052 to 40385. [2022-03-15 14:14:43,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40385 states, 40384 states have (on average 2.8884706814580032) internal successors, (116648), 40384 states have internal predecessors, (116648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:14:43,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40385 states to 40385 states and 116648 transitions. [2022-03-15 14:14:43,330 INFO L78 Accepts]: Start accepts. Automaton has 40385 states and 116648 transitions. Word has length 85 [2022-03-15 14:14:43,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:14:43,330 INFO L470 AbstractCegarLoop]: Abstraction has 40385 states and 116648 transitions. [2022-03-15 14:14:43,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:14:43,331 INFO L276 IsEmpty]: Start isEmpty. Operand 40385 states and 116648 transitions. [2022-03-15 14:14:43,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:14:43,539 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:14:43,539 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:14:43,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-03-15 14:14:43,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:14:43,740 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:14:43,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:14:43,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1865527226, now seen corresponding path program 61 times [2022-03-15 14:14:43,740 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:14:43,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457171130] [2022-03-15 14:14:43,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:14:43,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:14:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:14:43,956 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:14:43,956 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:14:43,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457171130] [2022-03-15 14:14:43,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457171130] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:14:43,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709392259] [2022-03-15 14:14:43,956 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:14:43,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:14:43,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:14:43,957 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) [2022-03-15 14:14:43,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-15 14:14:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:14:44,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:14:44,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:14:44,288 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:14:44,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:14:44,705 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:14:44,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709392259] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:14:44,705 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:14:44,705 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-15 14:14:44,705 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253388116] [2022-03-15 14:14:44,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:14:44,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:14:44,706 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:14:44,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:14:44,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:14:44,706 INFO L87 Difference]: Start difference. First operand 40385 states and 116648 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:15:01,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:15:01,990 INFO L93 Difference]: Finished difference Result 53305 states and 152463 transitions. [2022-03-15 14:15:01,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2022-03-15 14:15:01,990 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:15:01,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:15:02,107 INFO L225 Difference]: With dead ends: 53305 [2022-03-15 14:15:02,107 INFO L226 Difference]: Without dead ends: 53215 [2022-03-15 14:15:02,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16013 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=5318, Invalid=36502, Unknown=0, NotChecked=0, Total=41820 [2022-03-15 14:15:02,110 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 1761 mSDsluCounter, 4369 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 4210 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:15:02,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1761 Valid, 4210 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-15 14:15:02,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53215 states. [2022-03-15 14:15:02,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53215 to 41541. [2022-03-15 14:15:03,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41541 states, 41540 states have (on average 2.887987481945113) internal successors, (119967), 41540 states have internal predecessors, (119967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:15:03,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41541 states to 41541 states and 119967 transitions. [2022-03-15 14:15:03,124 INFO L78 Accepts]: Start accepts. Automaton has 41541 states and 119967 transitions. Word has length 85 [2022-03-15 14:15:03,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:15:03,124 INFO L470 AbstractCegarLoop]: Abstraction has 41541 states and 119967 transitions. [2022-03-15 14:15:03,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:15:03,124 INFO L276 IsEmpty]: Start isEmpty. Operand 41541 states and 119967 transitions. [2022-03-15 14:15:03,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:15:03,187 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:15:03,187 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:15:03,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-03-15 14:15:03,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:15:03,396 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:15:03,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:15:03,397 INFO L85 PathProgramCache]: Analyzing trace with hash 2111027964, now seen corresponding path program 62 times [2022-03-15 14:15:03,397 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:15:03,397 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894117035] [2022-03-15 14:15:03,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:15:03,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:15:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:15:03,602 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:15:03,602 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:15:03,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894117035] [2022-03-15 14:15:03,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894117035] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:15:03,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421405533] [2022-03-15 14:15:03,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:15:03,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:15:03,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:15:03,604 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) [2022-03-15 14:15:03,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-15 14:15:03,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:15:03,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:15:03,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:15:03,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:15:04,144 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:15:04,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:15:04,669 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:15:04,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421405533] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:15:04,669 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:15:04,669 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 31 [2022-03-15 14:15:04,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731759997] [2022-03-15 14:15:04,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:15:04,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-15 14:15:04,670 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:15:04,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-15 14:15:04,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2022-03-15 14:15:04,670 INFO L87 Difference]: Start difference. First operand 41541 states and 119967 transitions. Second operand has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:15:16,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:15:16,992 INFO L93 Difference]: Finished difference Result 44680 states and 128452 transitions. [2022-03-15 14:15:16,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-03-15 14:15:16,992 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:15:16,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:15:17,073 INFO L225 Difference]: With dead ends: 44680 [2022-03-15 14:15:17,073 INFO L226 Difference]: Without dead ends: 44572 [2022-03-15 14:15:17,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6583 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=2128, Invalid=16504, Unknown=0, NotChecked=0, Total=18632 [2022-03-15 14:15:17,074 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 854 mSDsluCounter, 3249 mSDsCounter, 0 mSdLazyCounter, 1805 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 3173 SdHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:15:17,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [854 Valid, 3173 Invalid, 1951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1805 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-15 14:15:17,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44572 states. [2022-03-15 14:15:17,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44572 to 41641. [2022-03-15 14:15:17,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41641 states, 41640 states have (on average 2.887367915465898) internal successors, (120230), 41640 states have internal predecessors, (120230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:15:18,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41641 states to 41641 states and 120230 transitions. [2022-03-15 14:15:18,032 INFO L78 Accepts]: Start accepts. Automaton has 41641 states and 120230 transitions. Word has length 85 [2022-03-15 14:15:18,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:15:18,033 INFO L470 AbstractCegarLoop]: Abstraction has 41641 states and 120230 transitions. [2022-03-15 14:15:18,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:15:18,033 INFO L276 IsEmpty]: Start isEmpty. Operand 41641 states and 120230 transitions. [2022-03-15 14:15:18,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:15:18,103 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:15:18,104 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:15:18,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-03-15 14:15:18,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:15:18,316 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:15:18,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:15:18,317 INFO L85 PathProgramCache]: Analyzing trace with hash -372347426, now seen corresponding path program 63 times [2022-03-15 14:15:18,317 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:15:18,317 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689206519] [2022-03-15 14:15:18,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:15:18,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:15:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:15:18,626 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:15:18,627 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:15:18,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689206519] [2022-03-15 14:15:18,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689206519] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:15:18,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339386362] [2022-03-15 14:15:18,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:15:18,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:15:18,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:15:18,628 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) [2022-03-15 14:15:18,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-15 14:15:18,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:15:18,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:15:18,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:15:18,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:15:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:15:19,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:15:19,367 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:15:19,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339386362] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:15:19,367 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:15:19,367 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-03-15 14:15:19,367 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014407493] [2022-03-15 14:15:19,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:15:19,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 14:15:19,367 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:15:19,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 14:15:19,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2022-03-15 14:15:19,368 INFO L87 Difference]: Start difference. First operand 41641 states and 120230 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:15:32,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:15:32,375 INFO L93 Difference]: Finished difference Result 49660 states and 142447 transitions. [2022-03-15 14:15:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-03-15 14:15:32,376 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:15:32,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:15:32,477 INFO L225 Difference]: With dead ends: 49660 [2022-03-15 14:15:32,477 INFO L226 Difference]: Without dead ends: 49540 [2022-03-15 14:15:32,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7130 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=2555, Invalid=18037, Unknown=0, NotChecked=0, Total=20592 [2022-03-15 14:15:32,479 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 1237 mSDsluCounter, 4768 mSDsCounter, 0 mSdLazyCounter, 2569 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 4586 SdHoareTripleChecker+Invalid, 2741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 2569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:15:32,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1237 Valid, 4586 Invalid, 2741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 2569 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-15 14:15:32,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49540 states. [2022-03-15 14:15:33,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49540 to 44153. [2022-03-15 14:15:33,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44153 states, 44152 states have (on average 2.8891556441384307) internal successors, (127562), 44152 states have internal predecessors, (127562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:15:33,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44153 states to 44153 states and 127562 transitions. [2022-03-15 14:15:33,481 INFO L78 Accepts]: Start accepts. Automaton has 44153 states and 127562 transitions. Word has length 85 [2022-03-15 14:15:33,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:15:33,481 INFO L470 AbstractCegarLoop]: Abstraction has 44153 states and 127562 transitions. [2022-03-15 14:15:33,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:15:33,481 INFO L276 IsEmpty]: Start isEmpty. Operand 44153 states and 127562 transitions. [2022-03-15 14:15:33,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:15:33,548 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:15:33,548 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:15:33,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-03-15 14:15:33,748 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,SelfDestructingSolverStorable73 [2022-03-15 14:15:33,749 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:15:33,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:15:33,749 INFO L85 PathProgramCache]: Analyzing trace with hash -351630040, now seen corresponding path program 64 times [2022-03-15 14:15:33,749 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:15:33,749 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186169639] [2022-03-15 14:15:33,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:15:33,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:15:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:15:34,130 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:15:34,130 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:15:34,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186169639] [2022-03-15 14:15:34,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186169639] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:15:34,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034846608] [2022-03-15 14:15:34,130 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:15:34,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:15:34,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:15:34,132 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) [2022-03-15 14:15:34,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-15 14:15:34,237 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:15:34,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:15:34,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:15:34,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:15:34,490 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:15:34,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:15:34,964 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:15:34,964 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034846608] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:15:34,964 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:15:34,964 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-15 14:15:34,964 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689306363] [2022-03-15 14:15:34,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:15:34,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:15:34,965 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:15:34,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:15:34,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=937, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:15:34,965 INFO L87 Difference]: Start difference. First operand 44153 states and 127562 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:15:59,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:15:59,806 INFO L93 Difference]: Finished difference Result 53685 states and 153583 transitions. [2022-03-15 14:15:59,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2022-03-15 14:15:59,807 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:15:59,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:15:59,948 INFO L225 Difference]: With dead ends: 53685 [2022-03-15 14:15:59,948 INFO L226 Difference]: Without dead ends: 53580 [2022-03-15 14:15:59,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16397 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=5127, Invalid=37515, Unknown=0, NotChecked=0, Total=42642 [2022-03-15 14:15:59,950 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 1849 mSDsluCounter, 5078 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 4920 SdHoareTripleChecker+Invalid, 2788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:15:59,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1849 Valid, 4920 Invalid, 2788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-15 14:15:59,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53580 states. [2022-03-15 14:16:00,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53580 to 43241. [2022-03-15 14:16:00,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43241 states, 43240 states have (on average 2.8871877890841815) internal successors, (124842), 43240 states have internal predecessors, (124842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:16:00,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43241 states to 43241 states and 124842 transitions. [2022-03-15 14:16:00,990 INFO L78 Accepts]: Start accepts. Automaton has 43241 states and 124842 transitions. Word has length 85 [2022-03-15 14:16:00,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:16:00,990 INFO L470 AbstractCegarLoop]: Abstraction has 43241 states and 124842 transitions. [2022-03-15 14:16:00,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:16:00,990 INFO L276 IsEmpty]: Start isEmpty. Operand 43241 states and 124842 transitions. [2022-03-15 14:16:01,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:16:01,053 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:16:01,053 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:16:01,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-03-15 14:16:01,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:16:01,254 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:16:01,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:16:01,254 INFO L85 PathProgramCache]: Analyzing trace with hash -749858998, now seen corresponding path program 65 times [2022-03-15 14:16:01,254 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:16:01,254 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626194995] [2022-03-15 14:16:01,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:16:01,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:16:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:16:01,447 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:16:01,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:16:01,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626194995] [2022-03-15 14:16:01,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626194995] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:16:01,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451393948] [2022-03-15 14:16:01,447 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:16:01,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:16:01,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:16:01,449 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) [2022-03-15 14:16:01,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-15 14:16:01,552 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 14:16:01,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:16:01,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:16:01,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:16:01,825 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:16:01,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:16:02,209 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:16:02,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451393948] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:16:02,209 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:16:02,209 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-15 14:16:02,209 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311253906] [2022-03-15 14:16:02,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:16:02,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:16:02,210 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:16:02,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:16:02,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:16:02,210 INFO L87 Difference]: Start difference. First operand 43241 states and 124842 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:16:27,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:16:27,650 INFO L93 Difference]: Finished difference Result 53446 states and 152839 transitions. [2022-03-15 14:16:27,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2022-03-15 14:16:27,651 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:16:27,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:16:27,768 INFO L225 Difference]: With dead ends: 53446 [2022-03-15 14:16:27,768 INFO L226 Difference]: Without dead ends: 53191 [2022-03-15 14:16:27,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23523 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=6453, Invalid=51869, Unknown=0, NotChecked=0, Total=58322 [2022-03-15 14:16:27,771 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 1920 mSDsluCounter, 4669 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1920 SdHoareTripleChecker+Valid, 4531 SdHoareTripleChecker+Invalid, 2876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:16:27,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1920 Valid, 4531 Invalid, 2876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-15 14:16:27,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53191 states. [2022-03-15 14:16:28,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53191 to 43337. [2022-03-15 14:16:28,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43337 states, 43336 states have (on average 2.885776259922466) internal successors, (125058), 43336 states have internal predecessors, (125058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:16:28,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43337 states to 43337 states and 125058 transitions. [2022-03-15 14:16:29,000 INFO L78 Accepts]: Start accepts. Automaton has 43337 states and 125058 transitions. Word has length 85 [2022-03-15 14:16:29,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:16:29,000 INFO L470 AbstractCegarLoop]: Abstraction has 43337 states and 125058 transitions. [2022-03-15 14:16:29,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:16:29,000 INFO L276 IsEmpty]: Start isEmpty. Operand 43337 states and 125058 transitions. [2022-03-15 14:16:29,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:16:29,067 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:16:29,067 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:16:29,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-03-15 14:16:29,268 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,SelfDestructingSolverStorable75 [2022-03-15 14:16:29,268 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:16:29,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:16:29,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2137853248, now seen corresponding path program 66 times [2022-03-15 14:16:29,268 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:16:29,268 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570664883] [2022-03-15 14:16:29,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:16:29,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:16:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:16:29,522 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:16:29,523 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:16:29,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570664883] [2022-03-15 14:16:29,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570664883] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:16:29,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785613138] [2022-03-15 14:16:29,523 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:16:29,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:16:29,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:16:29,524 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) [2022-03-15 14:16:29,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-15 14:16:29,636 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:16:29,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:16:29,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:16:29,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:16:29,888 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:16:29,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:16:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:16:30,254 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785613138] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:16:30,254 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:16:30,254 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-03-15 14:16:30,254 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640180107] [2022-03-15 14:16:30,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:16:30,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 14:16:30,254 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:16:30,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 14:16:30,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2022-03-15 14:16:30,255 INFO L87 Difference]: Start difference. First operand 43337 states and 125058 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:16:49,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:16:49,087 INFO L93 Difference]: Finished difference Result 50227 states and 143883 transitions. [2022-03-15 14:16:49,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2022-03-15 14:16:49,087 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:16:49,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:16:49,201 INFO L225 Difference]: With dead ends: 50227 [2022-03-15 14:16:49,201 INFO L226 Difference]: Without dead ends: 50155 [2022-03-15 14:16:49,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9855 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=3346, Invalid=23714, Unknown=0, NotChecked=0, Total=27060 [2022-03-15 14:16:49,202 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 1312 mSDsluCounter, 3760 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 3649 SdHoareTripleChecker+Invalid, 2424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:16:49,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1312 Valid, 3649 Invalid, 2424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-15 14:16:49,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50155 states. [2022-03-15 14:16:50,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50155 to 44785. [2022-03-15 14:16:50,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44785 states, 44784 states have (on average 2.8848695962843873) internal successors, (129196), 44784 states have internal predecessors, (129196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:16:50,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44785 states to 44785 states and 129196 transitions. [2022-03-15 14:16:50,206 INFO L78 Accepts]: Start accepts. Automaton has 44785 states and 129196 transitions. Word has length 85 [2022-03-15 14:16:50,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:16:50,207 INFO L470 AbstractCegarLoop]: Abstraction has 44785 states and 129196 transitions. [2022-03-15 14:16:50,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:16:50,207 INFO L276 IsEmpty]: Start isEmpty. Operand 44785 states and 129196 transitions. [2022-03-15 14:16:50,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:16:50,275 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:16:50,275 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:16:50,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-03-15 14:16:50,475 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,SelfDestructingSolverStorable76 [2022-03-15 14:16:50,476 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:16:50,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:16:50,476 INFO L85 PathProgramCache]: Analyzing trace with hash -2136396662, now seen corresponding path program 67 times [2022-03-15 14:16:50,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:16:50,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038561472] [2022-03-15 14:16:50,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:16:50,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:16:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:16:50,697 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:16:50,698 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:16:50,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038561472] [2022-03-15 14:16:50,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038561472] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:16:50,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611650306] [2022-03-15 14:16:50,698 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:16:50,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:16:50,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:16:50,700 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) [2022-03-15 14:16:50,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-15 14:16:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:16:50,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:16:50,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:16:51,039 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:16:51,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:16:51,614 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:16:51,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611650306] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:16:51,614 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:16:51,614 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-15 14:16:51,614 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979748570] [2022-03-15 14:16:51,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:16:51,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:16:51,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:16:51,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:16:51,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=938, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:16:51,615 INFO L87 Difference]: Start difference. First operand 44785 states and 129196 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:17:25,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:17:25,456 INFO L93 Difference]: Finished difference Result 56654 states and 162214 transitions. [2022-03-15 14:17:25,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2022-03-15 14:17:25,456 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:17:25,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:17:25,570 INFO L225 Difference]: With dead ends: 56654 [2022-03-15 14:17:25,570 INFO L226 Difference]: Without dead ends: 56564 [2022-03-15 14:17:25,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21249 ImplicationChecksByTransitivity, 31.0s TimeCoverageRelationStatistics Valid=6131, Invalid=47461, Unknown=0, NotChecked=0, Total=53592 [2022-03-15 14:17:25,572 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 1829 mSDsluCounter, 4495 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 4348 SdHoareTripleChecker+Invalid, 2722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:17:25,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1829 Valid, 4348 Invalid, 2722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-03-15 14:17:25,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56564 states. [2022-03-15 14:17:26,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56564 to 46285. [2022-03-15 14:17:26,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46285 states, 46284 states have (on average 2.88386915564774) internal successors, (133477), 46284 states have internal predecessors, (133477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:17:26,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46285 states to 46285 states and 133477 transitions. [2022-03-15 14:17:26,796 INFO L78 Accepts]: Start accepts. Automaton has 46285 states and 133477 transitions. Word has length 85 [2022-03-15 14:17:26,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:17:26,796 INFO L470 AbstractCegarLoop]: Abstraction has 46285 states and 133477 transitions. [2022-03-15 14:17:26,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:17:26,797 INFO L276 IsEmpty]: Start isEmpty. Operand 46285 states and 133477 transitions. [2022-03-15 14:17:26,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:17:26,874 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:17:26,874 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:17:26,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-03-15 14:17:27,074 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,SelfDestructingSolverStorable77 [2022-03-15 14:17:27,074 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:17:27,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:17:27,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1840158528, now seen corresponding path program 68 times [2022-03-15 14:17:27,075 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:17:27,075 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350361881] [2022-03-15 14:17:27,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:17:27,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:17:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:17:27,365 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:17:27,365 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:17:27,365 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350361881] [2022-03-15 14:17:27,365 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350361881] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:17:27,365 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298592234] [2022-03-15 14:17:27,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:17:27,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:17:27,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:17:27,367 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) [2022-03-15 14:17:27,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-15 14:17:27,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:17:27,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:17:27,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:17:27,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:17:27,721 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:17:27,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:17:28,155 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:17:28,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298592234] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:17:28,156 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:17:28,156 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 31 [2022-03-15 14:17:28,156 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54874313] [2022-03-15 14:17:28,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:17:28,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-15 14:17:28,156 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:17:28,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-15 14:17:28,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=833, Unknown=0, NotChecked=0, Total=930 [2022-03-15 14:17:28,157 INFO L87 Difference]: Start difference. First operand 46285 states and 133477 transitions. Second operand has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:17:47,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:17:47,081 INFO L93 Difference]: Finished difference Result 48661 states and 139878 transitions. [2022-03-15 14:17:47,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-03-15 14:17:47,082 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:17:47,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:17:47,174 INFO L225 Difference]: With dead ends: 48661 [2022-03-15 14:17:47,174 INFO L226 Difference]: Without dead ends: 48553 [2022-03-15 14:17:47,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8543 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=2558, Invalid=20698, Unknown=0, NotChecked=0, Total=23256 [2022-03-15 14:17:47,176 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 862 mSDsluCounter, 3403 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 3347 SdHoareTripleChecker+Invalid, 2108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:17:47,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 3347 Invalid, 2108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-03-15 14:17:47,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48553 states. [2022-03-15 14:17:48,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48553 to 46373. [2022-03-15 14:17:48,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46373 states, 46372 states have (on average 2.883442594669197) internal successors, (133711), 46372 states have internal predecessors, (133711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:17:48,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46373 states to 46373 states and 133711 transitions. [2022-03-15 14:17:48,192 INFO L78 Accepts]: Start accepts. Automaton has 46373 states and 133711 transitions. Word has length 85 [2022-03-15 14:17:48,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:17:48,192 INFO L470 AbstractCegarLoop]: Abstraction has 46373 states and 133711 transitions. [2022-03-15 14:17:48,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:17:48,192 INFO L276 IsEmpty]: Start isEmpty. Operand 46373 states and 133711 transitions. [2022-03-15 14:17:48,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:17:48,261 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:17:48,261 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:17:48,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-03-15 14:17:48,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-03-15 14:17:48,462 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:17:48,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:17:48,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1642898954, now seen corresponding path program 69 times [2022-03-15 14:17:48,462 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:17:48,462 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095431678] [2022-03-15 14:17:48,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:17:48,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:17:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:17:48,677 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:17:48,677 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:17:48,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095431678] [2022-03-15 14:17:48,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095431678] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:17:48,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560781988] [2022-03-15 14:17:48,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:17:48,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:17:48,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:17:48,680 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) [2022-03-15 14:17:48,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-15 14:17:48,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:17:48,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:17:48,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:17:48,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:17:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:17:49,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:17:49,622 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:17:49,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560781988] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:17:49,622 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:17:49,622 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-03-15 14:17:49,622 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281523633] [2022-03-15 14:17:49,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:17:49,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 14:17:49,623 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:17:49,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 14:17:49,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=867, Unknown=0, NotChecked=0, Total=992 [2022-03-15 14:17:49,623 INFO L87 Difference]: Start difference. First operand 46373 states and 133711 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:18:06,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:18:06,791 INFO L93 Difference]: Finished difference Result 57743 states and 165651 transitions. [2022-03-15 14:18:06,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-03-15 14:18:06,792 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:18:06,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:18:06,975 INFO L225 Difference]: With dead ends: 57743 [2022-03-15 14:18:06,975 INFO L226 Difference]: Without dead ends: 57671 [2022-03-15 14:18:06,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7360 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=2873, Invalid=18007, Unknown=0, NotChecked=0, Total=20880 [2022-03-15 14:18:06,976 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 1303 mSDsluCounter, 4003 mSDsCounter, 0 mSdLazyCounter, 2223 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 3884 SdHoareTripleChecker+Invalid, 2364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 2223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:18:06,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1303 Valid, 3884 Invalid, 2364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 2223 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-15 14:18:07,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57671 states. [2022-03-15 14:18:07,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57671 to 49169. [2022-03-15 14:18:07,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49169 states, 49168 states have (on average 2.884396355353075) internal successors, (141820), 49168 states have internal predecessors, (141820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:18:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49169 states to 49169 states and 141820 transitions. [2022-03-15 14:18:08,231 INFO L78 Accepts]: Start accepts. Automaton has 49169 states and 141820 transitions. Word has length 85 [2022-03-15 14:18:08,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:18:08,231 INFO L470 AbstractCegarLoop]: Abstraction has 49169 states and 141820 transitions. [2022-03-15 14:18:08,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:18:08,232 INFO L276 IsEmpty]: Start isEmpty. Operand 49169 states and 141820 transitions. [2022-03-15 14:18:08,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:18:08,447 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:18:08,447 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:18:08,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-03-15 14:18:08,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:18:08,651 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:18:08,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:18:08,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1663616340, now seen corresponding path program 70 times [2022-03-15 14:18:08,652 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:18:08,652 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427083661] [2022-03-15 14:18:08,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:18:08,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:18:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:18:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:08,851 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:18:08,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427083661] [2022-03-15 14:18:08,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427083661] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:18:08,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310420161] [2022-03-15 14:18:08,851 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:18:08,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:18:08,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:18:08,853 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) [2022-03-15 14:18:08,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-15 14:18:08,942 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:18:08,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:18:08,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:18:08,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:18:09,200 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:09,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:18:09,581 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:09,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310420161] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:18:09,582 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:18:09,582 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-15 14:18:09,582 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289430969] [2022-03-15 14:18:09,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:18:09,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:18:09,582 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:18:09,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:18:09,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:18:09,583 INFO L87 Difference]: Start difference. First operand 49169 states and 141820 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:18:32,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:18:32,639 INFO L93 Difference]: Finished difference Result 59715 states and 170993 transitions. [2022-03-15 14:18:32,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2022-03-15 14:18:32,639 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:18:32,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:18:32,851 INFO L225 Difference]: With dead ends: 59715 [2022-03-15 14:18:32,852 INFO L226 Difference]: Without dead ends: 59655 [2022-03-15 14:18:32,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12342 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=4300, Invalid=28642, Unknown=0, NotChecked=0, Total=32942 [2022-03-15 14:18:32,853 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 1858 mSDsluCounter, 3884 mSDsCounter, 0 mSdLazyCounter, 2159 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 3787 SdHoareTripleChecker+Invalid, 2374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 2159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:18:32,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1858 Valid, 3787 Invalid, 2374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 2159 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-15 14:18:32,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59655 states. [2022-03-15 14:18:33,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59655 to 47205. [2022-03-15 14:18:33,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47205 states, 47204 states have (on average 2.881853232776883) internal successors, (136035), 47204 states have internal predecessors, (136035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:18:34,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47205 states to 47205 states and 136035 transitions. [2022-03-15 14:18:34,055 INFO L78 Accepts]: Start accepts. Automaton has 47205 states and 136035 transitions. Word has length 85 [2022-03-15 14:18:34,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:18:34,055 INFO L470 AbstractCegarLoop]: Abstraction has 47205 states and 136035 transitions. [2022-03-15 14:18:34,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:18:34,055 INFO L276 IsEmpty]: Start isEmpty. Operand 47205 states and 136035 transitions. [2022-03-15 14:18:34,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:18:34,315 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:18:34,315 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:18:34,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-03-15 14:18:34,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:18:34,516 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:18:34,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:18:34,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1345204234, now seen corresponding path program 71 times [2022-03-15 14:18:34,517 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:18:34,517 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966049807] [2022-03-15 14:18:34,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:18:34,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:18:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:18:34,688 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:34,688 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:18:34,688 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966049807] [2022-03-15 14:18:34,688 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966049807] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:18:34,688 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967326380] [2022-03-15 14:18:34,688 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:18:34,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:18:34,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:18:34,689 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) [2022-03-15 14:18:34,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-15 14:18:34,796 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:18:34,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:18:34,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:18:34,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:18:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:35,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:18:35,530 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:35,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967326380] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:18:35,530 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:18:35,531 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 31 [2022-03-15 14:18:35,531 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513755386] [2022-03-15 14:18:35,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:18:35,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-15 14:18:35,591 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:18:35,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-15 14:18:35,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=826, Unknown=0, NotChecked=0, Total=930 [2022-03-15 14:18:35,591 INFO L87 Difference]: Start difference. First operand 47205 states and 136035 transitions. Second operand has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:18:54,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:18:54,156 INFO L93 Difference]: Finished difference Result 49683 states and 142554 transitions. [2022-03-15 14:18:54,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-03-15 14:18:54,156 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:18:54,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:18:54,265 INFO L225 Difference]: With dead ends: 49683 [2022-03-15 14:18:54,265 INFO L226 Difference]: Without dead ends: 49575 [2022-03-15 14:18:54,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5610 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=1960, Invalid=14295, Unknown=1, NotChecked=0, Total=16256 [2022-03-15 14:18:54,266 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 1113 mSDsluCounter, 3162 mSDsCounter, 0 mSdLazyCounter, 1806 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 3126 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:18:54,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1113 Valid, 3126 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1806 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-15 14:18:54,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49575 states. [2022-03-15 14:18:55,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49575 to 47301. [2022-03-15 14:18:55,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47301 states, 47300 states have (on average 2.8823467230443973) internal successors, (136335), 47300 states have internal predecessors, (136335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:18:55,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47301 states to 47301 states and 136335 transitions. [2022-03-15 14:18:55,516 INFO L78 Accepts]: Start accepts. Automaton has 47301 states and 136335 transitions. Word has length 85 [2022-03-15 14:18:55,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:18:55,516 INFO L470 AbstractCegarLoop]: Abstraction has 47301 states and 136335 transitions. [2022-03-15 14:18:55,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:18:55,516 INFO L276 IsEmpty]: Start isEmpty. Operand 47301 states and 136335 transitions. [2022-03-15 14:18:55,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:18:55,583 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:18:55,583 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:18:55,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-03-15 14:18:55,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:18:55,784 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:18:55,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:18:55,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1578644024, now seen corresponding path program 72 times [2022-03-15 14:18:55,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:18:55,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875776404] [2022-03-15 14:18:55,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:18:55,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:18:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:18:55,950 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:55,950 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:18:55,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875776404] [2022-03-15 14:18:55,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875776404] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:18:55,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475006825] [2022-03-15 14:18:55,950 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:18:55,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:18:55,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:18:55,951 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) [2022-03-15 14:18:55,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-15 14:18:56,093 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:18:56,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:18:56,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:18:56,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:18:56,446 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:56,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:18:56,845 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:56,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475006825] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:18:56,846 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:18:56,846 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 30 [2022-03-15 14:18:56,846 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898974240] [2022-03-15 14:18:56,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:18:56,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-15 14:18:56,846 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:18:56,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-15 14:18:56,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2022-03-15 14:18:56,846 INFO L87 Difference]: Start difference. First operand 47301 states and 136335 transitions. Second operand has 30 states, 30 states have (on average 4.4) internal successors, (132), 30 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:19:00,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:19:00,949 INFO L93 Difference]: Finished difference Result 48441 states and 139317 transitions. [2022-03-15 14:19:00,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-15 14:19:00,950 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.4) internal successors, (132), 30 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:19:00,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:19:01,055 INFO L225 Difference]: With dead ends: 48441 [2022-03-15 14:19:01,055 INFO L226 Difference]: Without dead ends: 48321 [2022-03-15 14:19:01,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 153 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=809, Invalid=5197, Unknown=0, NotChecked=0, Total=6006 [2022-03-15 14:19:01,056 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 620 mSDsluCounter, 2926 mSDsCounter, 0 mSdLazyCounter, 1489 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 2885 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:19:01,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 2885 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1489 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 14:19:01,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48321 states. [2022-03-15 14:19:01,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48321 to 47357. [2022-03-15 14:19:01,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47357 states, 47356 states have (on average 2.8817678858011657) internal successors, (136469), 47356 states have internal predecessors, (136469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:19:02,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47357 states to 47357 states and 136469 transitions. [2022-03-15 14:19:02,066 INFO L78 Accepts]: Start accepts. Automaton has 47357 states and 136469 transitions. Word has length 85 [2022-03-15 14:19:02,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:19:02,066 INFO L470 AbstractCegarLoop]: Abstraction has 47357 states and 136469 transitions. [2022-03-15 14:19:02,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.4) internal successors, (132), 30 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:19:02,066 INFO L276 IsEmpty]: Start isEmpty. Operand 47357 states and 136469 transitions. [2022-03-15 14:19:02,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:19:02,132 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:19:02,132 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:19:02,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-03-15 14:19:02,332 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,SelfDestructingSolverStorable82 [2022-03-15 14:19:02,333 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:19:02,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:19:02,333 INFO L85 PathProgramCache]: Analyzing trace with hash 779253390, now seen corresponding path program 73 times [2022-03-15 14:19:02,333 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:19:02,333 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639569538] [2022-03-15 14:19:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:19:02,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:19:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:19:02,688 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:02,688 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:19:02,688 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639569538] [2022-03-15 14:19:02,688 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639569538] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:19:02,688 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532339678] [2022-03-15 14:19:02,688 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:19:02,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:19:02,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:19:02,692 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) [2022-03-15 14:19:02,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-15 14:19:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:19:02,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:19:02,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:19:03,036 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:03,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:19:03,368 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:03,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532339678] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:19:03,369 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:19:03,369 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-03-15 14:19:03,369 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655626188] [2022-03-15 14:19:03,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:19:03,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 14:19:03,369 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:19:03,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 14:19:03,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2022-03-15 14:19:03,370 INFO L87 Difference]: Start difference. First operand 47357 states and 136469 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:19:18,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:19:18,341 INFO L93 Difference]: Finished difference Result 58460 states and 167228 transitions. [2022-03-15 14:19:18,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-03-15 14:19:18,341 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:19:18,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:19:18,461 INFO L225 Difference]: With dead ends: 58460 [2022-03-15 14:19:18,461 INFO L226 Difference]: Without dead ends: 58388 [2022-03-15 14:19:18,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9118 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=3033, Invalid=21459, Unknown=0, NotChecked=0, Total=24492 [2022-03-15 14:19:18,463 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 1369 mSDsluCounter, 3629 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 3531 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:19:18,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1369 Valid, 3531 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1890 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-03-15 14:19:18,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58388 states. [2022-03-15 14:19:19,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58388 to 50273. [2022-03-15 14:19:19,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50273 states, 50272 states have (on average 2.88375238701464) internal successors, (144972), 50272 states have internal predecessors, (144972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:19:19,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50273 states to 50273 states and 144972 transitions. [2022-03-15 14:19:19,818 INFO L78 Accepts]: Start accepts. Automaton has 50273 states and 144972 transitions. Word has length 85 [2022-03-15 14:19:19,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:19:19,818 INFO L470 AbstractCegarLoop]: Abstraction has 50273 states and 144972 transitions. [2022-03-15 14:19:19,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:19:19,818 INFO L276 IsEmpty]: Start isEmpty. Operand 50273 states and 144972 transitions. [2022-03-15 14:19:20,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:19:20,052 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:19:20,052 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:19:20,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-03-15 14:19:20,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:19:20,275 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:19:20,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:19:20,276 INFO L85 PathProgramCache]: Analyzing trace with hash 799970776, now seen corresponding path program 74 times [2022-03-15 14:19:20,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:19:20,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469112987] [2022-03-15 14:19:20,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:19:20,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:19:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:19:20,521 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:20,521 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:19:20,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469112987] [2022-03-15 14:19:20,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469112987] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:19:20,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116344887] [2022-03-15 14:19:20,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:19:20,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:19:20,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:19:20,523 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) [2022-03-15 14:19:20,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-15 14:19:20,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:19:20,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:19:20,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:19:20,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:19:20,902 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:20,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:19:21,243 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:21,243 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116344887] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:19:21,243 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:19:21,243 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-15 14:19:21,243 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770840247] [2022-03-15 14:19:21,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:19:21,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:19:21,244 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:19:21,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:19:21,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:19:21,244 INFO L87 Difference]: Start difference. First operand 50273 states and 144972 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:19:45,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:19:45,337 INFO L93 Difference]: Finished difference Result 61927 states and 176814 transitions. [2022-03-15 14:19:45,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2022-03-15 14:19:45,338 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:19:45,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:19:45,467 INFO L225 Difference]: With dead ends: 61927 [2022-03-15 14:19:45,467 INFO L226 Difference]: Without dead ends: 61837 [2022-03-15 14:19:45,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15849 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=4900, Invalid=35300, Unknown=0, NotChecked=0, Total=40200 [2022-03-15 14:19:45,469 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 1780 mSDsluCounter, 4664 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 4526 SdHoareTripleChecker+Invalid, 2604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:19:45,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1780 Valid, 4526 Invalid, 2604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-15 14:19:45,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61837 states. [2022-03-15 14:19:46,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61837 to 50501. [2022-03-15 14:19:46,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50501 states, 50500 states have (on average 2.8834653465346536) internal successors, (145615), 50500 states have internal predecessors, (145615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:19:46,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50501 states to 50501 states and 145615 transitions. [2022-03-15 14:19:46,742 INFO L78 Accepts]: Start accepts. Automaton has 50501 states and 145615 transitions. Word has length 85 [2022-03-15 14:19:46,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:19:46,742 INFO L470 AbstractCegarLoop]: Abstraction has 50501 states and 145615 transitions. [2022-03-15 14:19:46,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:19:46,742 INFO L276 IsEmpty]: Start isEmpty. Operand 50501 states and 145615 transitions. [2022-03-15 14:19:46,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:19:46,828 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:19:46,828 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:19:46,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-03-15 14:19:47,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:19:47,029 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:19:47,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:19:47,030 INFO L85 PathProgramCache]: Analyzing trace with hash 401741818, now seen corresponding path program 75 times [2022-03-15 14:19:47,030 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:19:47,030 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338904028] [2022-03-15 14:19:47,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:19:47,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:19:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:19:47,199 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:47,199 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:19:47,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338904028] [2022-03-15 14:19:47,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338904028] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:19:47,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477646510] [2022-03-15 14:19:47,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:19:47,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:19:47,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:19:47,200 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) [2022-03-15 14:19:47,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-15 14:19:47,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 14:19:47,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:19:47,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:19:47,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:19:47,550 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:47,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:19:48,135 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:48,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477646510] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:19:48,136 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:19:48,136 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-15 14:19:48,136 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640889217] [2022-03-15 14:19:48,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:19:48,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:19:48,136 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:19:48,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:19:48,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=945, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:19:48,137 INFO L87 Difference]: Start difference. First operand 50501 states and 145615 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:20:08,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:20:08,614 INFO L93 Difference]: Finished difference Result 64620 states and 185060 transitions. [2022-03-15 14:20:08,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2022-03-15 14:20:08,615 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:20:08,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:20:08,756 INFO L225 Difference]: With dead ends: 64620 [2022-03-15 14:20:08,756 INFO L226 Difference]: Without dead ends: 64515 [2022-03-15 14:20:08,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30396 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=7074, Invalid=66096, Unknown=0, NotChecked=0, Total=73170 [2022-03-15 14:20:08,760 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 1837 mSDsluCounter, 3974 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 3881 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:20:08,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1837 Valid, 3881 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-15 14:20:08,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64515 states. [2022-03-15 14:20:09,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64515 to 53397. [2022-03-15 14:20:10,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53397 states, 53396 states have (on average 2.8872387444752414) internal successors, (154167), 53396 states have internal predecessors, (154167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:20:10,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53397 states to 53397 states and 154167 transitions. [2022-03-15 14:20:10,244 INFO L78 Accepts]: Start accepts. Automaton has 53397 states and 154167 transitions. Word has length 85 [2022-03-15 14:20:10,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:20:10,244 INFO L470 AbstractCegarLoop]: Abstraction has 53397 states and 154167 transitions. [2022-03-15 14:20:10,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:20:10,244 INFO L276 IsEmpty]: Start isEmpty. Operand 53397 states and 154167 transitions. [2022-03-15 14:20:10,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:20:10,329 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:20:10,329 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:20:10,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-03-15 14:20:10,530 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,SelfDestructingSolverStorable85 [2022-03-15 14:20:10,530 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:20:10,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:20:10,531 INFO L85 PathProgramCache]: Analyzing trace with hash 951304790, now seen corresponding path program 76 times [2022-03-15 14:20:10,531 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:20:10,531 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644824668] [2022-03-15 14:20:10,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:20:10,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:20:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:20:10,884 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:10,885 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:20:10,885 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644824668] [2022-03-15 14:20:10,885 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644824668] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:20:10,885 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133010722] [2022-03-15 14:20:10,885 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:20:10,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:20:10,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:20:10,887 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) [2022-03-15 14:20:10,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-15 14:20:10,978 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:20:10,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:20:10,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:20:10,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:20:11,225 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:11,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:20:11,655 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:11,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133010722] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:20:11,656 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:20:11,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-15 14:20:11,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336405367] [2022-03-15 14:20:11,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:20:11,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:20:11,656 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:20:11,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:20:11,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:20:11,657 INFO L87 Difference]: Start difference. First operand 53397 states and 154167 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:20:36,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:20:36,955 INFO L93 Difference]: Finished difference Result 81855 states and 234593 transitions. [2022-03-15 14:20:36,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 322 states. [2022-03-15 14:20:36,956 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:20:36,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:20:37,139 INFO L225 Difference]: With dead ends: 81855 [2022-03-15 14:20:37,139 INFO L226 Difference]: Without dead ends: 81225 [2022-03-15 14:20:37,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 337 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49445 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=10013, Invalid=104569, Unknown=0, NotChecked=0, Total=114582 [2022-03-15 14:20:37,146 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 2143 mSDsluCounter, 6354 mSDsCounter, 0 mSdLazyCounter, 3659 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2143 SdHoareTripleChecker+Valid, 5999 SdHoareTripleChecker+Invalid, 3881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 3659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:20:37,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2143 Valid, 5999 Invalid, 3881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 3659 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-03-15 14:20:37,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81225 states. [2022-03-15 14:20:38,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81225 to 59411. [2022-03-15 14:20:38,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59411 states, 59410 states have (on average 2.8921057061100823) internal successors, (171820), 59410 states have internal predecessors, (171820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:20:38,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59411 states to 59411 states and 171820 transitions. [2022-03-15 14:20:38,936 INFO L78 Accepts]: Start accepts. Automaton has 59411 states and 171820 transitions. Word has length 85 [2022-03-15 14:20:38,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:20:38,937 INFO L470 AbstractCegarLoop]: Abstraction has 59411 states and 171820 transitions. [2022-03-15 14:20:38,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:20:38,937 INFO L276 IsEmpty]: Start isEmpty. Operand 59411 states and 171820 transitions. [2022-03-15 14:20:39,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:20:39,242 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:20:39,242 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:20:39,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-03-15 14:20:39,442 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,SelfDestructingSolverStorable86 [2022-03-15 14:20:39,442 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:20:39,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:20:39,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1304018864, now seen corresponding path program 77 times [2022-03-15 14:20:39,443 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:20:39,443 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133892412] [2022-03-15 14:20:39,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:20:39,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:20:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:20:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:39,579 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:20:39,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133892412] [2022-03-15 14:20:39,580 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133892412] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:20:39,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162417020] [2022-03-15 14:20:39,580 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:20:39,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:20:39,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:20:39,581 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) [2022-03-15 14:20:39,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-15 14:20:39,681 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 14:20:39,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:20:39,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:20:39,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:20:39,916 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:39,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:20:40,254 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:40,254 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162417020] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:20:40,254 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:20:40,254 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2022-03-15 14:20:40,254 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449923738] [2022-03-15 14:20:40,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:20:40,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-15 14:20:40,255 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:20:40,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-15 14:20:40,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2022-03-15 14:20:40,255 INFO L87 Difference]: Start difference. First operand 59411 states and 171820 transitions. Second operand has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:20:55,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:20:55,599 INFO L93 Difference]: Finished difference Result 86380 states and 248788 transitions. [2022-03-15 14:20:55,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-03-15 14:20:55,600 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:20:55,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:20:55,787 INFO L225 Difference]: With dead ends: 86380 [2022-03-15 14:20:55,787 INFO L226 Difference]: Without dead ends: 85795 [2022-03-15 14:20:55,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19001 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=4885, Invalid=44177, Unknown=0, NotChecked=0, Total=49062 [2022-03-15 14:20:55,789 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 1293 mSDsluCounter, 3994 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 3871 SdHoareTripleChecker+Invalid, 2578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:20:55,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1293 Valid, 3871 Invalid, 2578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-15 14:20:55,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85795 states. [2022-03-15 14:20:57,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85795 to 63661. [2022-03-15 14:20:57,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63661 states, 63660 states have (on average 2.886946277097078) internal successors, (183783), 63660 states have internal predecessors, (183783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:20:57,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63661 states to 63661 states and 183783 transitions. [2022-03-15 14:20:57,453 INFO L78 Accepts]: Start accepts. Automaton has 63661 states and 183783 transitions. Word has length 85 [2022-03-15 14:20:57,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:20:57,453 INFO L470 AbstractCegarLoop]: Abstraction has 63661 states and 183783 transitions. [2022-03-15 14:20:57,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:20:57,685 INFO L276 IsEmpty]: Start isEmpty. Operand 63661 states and 183783 transitions. [2022-03-15 14:20:57,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:20:57,830 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:20:57,831 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:20:57,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-03-15 14:20:58,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:20:58,031 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:20:58,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:20:58,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1322894808, now seen corresponding path program 78 times [2022-03-15 14:20:58,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:20:58,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109905050] [2022-03-15 14:20:58,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:20:58,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:20:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:20:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:58,235 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:20:58,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109905050] [2022-03-15 14:20:58,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109905050] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:20:58,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394499983] [2022-03-15 14:20:58,235 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:20:58,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:20:58,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:20:58,237 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) [2022-03-15 14:20:58,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-15 14:20:58,340 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 14:20:58,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:20:58,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:20:58,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:20:58,589 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:58,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:20:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:59,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394499983] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:20:59,133 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:20:59,134 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-15 14:20:59,134 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198652266] [2022-03-15 14:20:59,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:20:59,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:20:59,134 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:20:59,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:20:59,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:20:59,135 INFO L87 Difference]: Start difference. First operand 63661 states and 183783 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:21:24,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:21:24,379 INFO L93 Difference]: Finished difference Result 81549 states and 232722 transitions. [2022-03-15 14:21:24,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 289 states. [2022-03-15 14:21:24,380 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:21:24,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:21:24,562 INFO L225 Difference]: With dead ends: 81549 [2022-03-15 14:21:24,562 INFO L226 Difference]: Without dead ends: 81204 [2022-03-15 14:21:24,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38668 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=8931, Invalid=82575, Unknown=0, NotChecked=0, Total=91506 [2022-03-15 14:21:24,565 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 2046 mSDsluCounter, 3961 mSDsCounter, 0 mSdLazyCounter, 2047 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2046 SdHoareTripleChecker+Valid, 3837 SdHoareTripleChecker+Invalid, 2355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 2047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:21:24,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2046 Valid, 3837 Invalid, 2355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 2047 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-15 14:21:24,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81204 states. [2022-03-15 14:21:26,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81204 to 67437. [2022-03-15 14:21:26,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67437 states, 67436 states have (on average 2.887997508749036) internal successors, (194755), 67436 states have internal predecessors, (194755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:21:26,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67437 states to 67437 states and 194755 transitions. [2022-03-15 14:21:26,642 INFO L78 Accepts]: Start accepts. Automaton has 67437 states and 194755 transitions. Word has length 85 [2022-03-15 14:21:26,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:21:26,642 INFO L470 AbstractCegarLoop]: Abstraction has 67437 states and 194755 transitions. [2022-03-15 14:21:26,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:21:26,642 INFO L276 IsEmpty]: Start isEmpty. Operand 67437 states and 194755 transitions. [2022-03-15 14:21:26,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:21:26,746 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:21:26,746 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:21:26,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-03-15 14:21:26,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:21:26,947 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:21:26,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:21:26,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1872457780, now seen corresponding path program 79 times [2022-03-15 14:21:26,947 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:21:26,948 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846885794] [2022-03-15 14:21:26,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:21:26,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:21:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:21:27,117 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:21:27,118 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:21:27,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846885794] [2022-03-15 14:21:27,118 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846885794] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:21:27,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970869763] [2022-03-15 14:21:27,118 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:21:27,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:21:27,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:21:27,119 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) [2022-03-15 14:21:27,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-15 14:21:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:21:27,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:21:27,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:21:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:21:27,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:21:27,919 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:21:27,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970869763] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:21:27,920 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:21:27,920 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-15 14:21:27,920 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691217506] [2022-03-15 14:21:27,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:21:27,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:21:27,920 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:21:27,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:21:27,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:21:27,920 INFO L87 Difference]: Start difference. First operand 67437 states and 194755 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:21:54,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:21:54,116 INFO L93 Difference]: Finished difference Result 92125 states and 263509 transitions. [2022-03-15 14:21:54,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 283 states. [2022-03-15 14:21:54,116 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:21:54,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:21:54,324 INFO L225 Difference]: With dead ends: 92125 [2022-03-15 14:21:54,324 INFO L226 Difference]: Without dead ends: 91465 [2022-03-15 14:21:54,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38142 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=9186, Invalid=81716, Unknown=0, NotChecked=0, Total=90902 [2022-03-15 14:21:54,327 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 1966 mSDsluCounter, 4788 mSDsCounter, 0 mSdLazyCounter, 2751 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1966 SdHoareTripleChecker+Valid, 4518 SdHoareTripleChecker+Invalid, 2998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 2751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:21:54,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1966 Valid, 4518 Invalid, 2998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 2751 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-15 14:21:54,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91465 states. [2022-03-15 14:21:56,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91465 to 68045. [2022-03-15 14:21:56,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68045 states, 68044 states have (on average 2.8846481688319323) internal successors, (196283), 68044 states have internal predecessors, (196283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:21:56,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68045 states to 68045 states and 196283 transitions. [2022-03-15 14:21:56,518 INFO L78 Accepts]: Start accepts. Automaton has 68045 states and 196283 transitions. Word has length 85 [2022-03-15 14:21:56,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:21:56,518 INFO L470 AbstractCegarLoop]: Abstraction has 68045 states and 196283 transitions. [2022-03-15 14:21:56,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:21:56,518 INFO L276 IsEmpty]: Start isEmpty. Operand 68045 states and 196283 transitions. [2022-03-15 14:21:56,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:21:56,625 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:21:56,626 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:21:56,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-03-15 14:21:56,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-03-15 14:21:56,827 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:21:56,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:21:56,827 INFO L85 PathProgramCache]: Analyzing trace with hash -871372052, now seen corresponding path program 80 times [2022-03-15 14:21:56,827 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:21:56,827 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693206416] [2022-03-15 14:21:56,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:21:56,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:21:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:21:56,998 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:21:56,998 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:21:56,998 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693206416] [2022-03-15 14:21:56,998 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693206416] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:21:56,998 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518045756] [2022-03-15 14:21:56,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:21:56,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:21:56,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:21:57,000 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) [2022-03-15 14:21:57,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-15 14:21:57,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:21:57,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:21:57,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:21:57,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:21:57,488 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:21:57,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:21:57,837 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:21:57,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518045756] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:21:57,837 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:21:57,837 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-03-15 14:21:57,837 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056342774] [2022-03-15 14:21:57,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:21:57,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 14:21:57,837 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:21:57,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 14:21:57,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=881, Unknown=0, NotChecked=0, Total=992 [2022-03-15 14:21:57,838 INFO L87 Difference]: Start difference. First operand 68045 states and 196283 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:43,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:22:43,629 INFO L93 Difference]: Finished difference Result 77721 states and 222828 transitions. [2022-03-15 14:22:43,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-03-15 14:22:43,629 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-15 14:22:43,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:22:43,801 INFO L225 Difference]: With dead ends: 77721 [2022-03-15 14:22:43,801 INFO L226 Difference]: Without dead ends: 77649 [2022-03-15 14:22:43,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14131 ImplicationChecksByTransitivity, 42.0s TimeCoverageRelationStatistics Valid=4455, Invalid=31835, Unknown=0, NotChecked=0, Total=36290 [2022-03-15 14:22:43,802 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 1181 mSDsluCounter, 3686 mSDsCounter, 0 mSdLazyCounter, 2079 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 3649 SdHoareTripleChecker+Invalid, 2309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 2079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:22:43,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1181 Valid, 3649 Invalid, 2309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 2079 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-03-15 14:22:43,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77649 states. [2022-03-15 14:22:45,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77649 to 69133. [2022-03-15 14:22:45,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69133 states, 69132 states have (on average 2.884264884568651) internal successors, (199395), 69132 states have internal predecessors, (199395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:46,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69133 states to 69133 states and 199395 transitions. [2022-03-15 14:22:46,083 INFO L78 Accepts]: Start accepts. Automaton has 69133 states and 199395 transitions. Word has length 85 [2022-03-15 14:22:46,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:22:46,083 INFO L470 AbstractCegarLoop]: Abstraction has 69133 states and 199395 transitions. [2022-03-15 14:22:46,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:22:46,084 INFO L276 IsEmpty]: Start isEmpty. Operand 69133 states and 199395 transitions. [2022-03-15 14:22:46,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-15 14:22:46,194 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:22:46,194 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:22:46,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-03-15 14:22:46,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:22:46,395 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:22:46,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:22:46,396 INFO L85 PathProgramCache]: Analyzing trace with hash -850654666, now seen corresponding path program 81 times [2022-03-15 14:22:46,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:22:46,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035508443] [2022-03-15 14:22:46,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:22:46,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:22:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:22:46,754 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:22:46,754 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:22:46,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035508443] [2022-03-15 14:22:46,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035508443] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:22:46,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128557010] [2022-03-15 14:22:46,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:22:46,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:22:46,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:22:46,755 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) [2022-03-15 14:22:46,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-03-15 14:22:46,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 14:22:46,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:22:46,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:22:46,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:22:47,104 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:22:47,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:22:47,465 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:22:47,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128557010] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:22:47,466 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:22:47,466 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-15 14:22:47,466 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976307069] [2022-03-15 14:22:47,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:22:47,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:22:47,466 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:22:47,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:22:47,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=943, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:22:47,467 INFO L87 Difference]: Start difference. First operand 69133 states and 199395 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-03-15 14:23:08,042 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 14:23:08,042 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 [2022-03-15 14:23:08,558 WARN L244 SmtUtils]: Removed 8 from assertion stack [2022-03-15 14:23:08,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-03-15 14:23:08,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4815 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=2294, Invalid=11986, Unknown=0, NotChecked=0, Total=14280 [2022-03-15 14:23:08,560 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 696 mSDsluCounter, 2142 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 2167 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:23:08,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 2167 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-15 14:23:08,561 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-15 14:23:08,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-03-15 14:23:08,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:23:08,761 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (69133states) and FLOYD_HOARE automaton (currently 98 states, 33 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 68 for 1127ms.. [2022-03-15 14:23:08,763 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-15 14:23:08,763 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-15 14:23:08,766 INFO L732 BasicCegarLoop]: Path program histogram: [81, 9, 1, 1] [2022-03-15 14:23:08,768 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 14:23:08,768 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 14:23:08,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 02:23:08 BasicIcfg [2022-03-15 14:23:08,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 14:23:08,770 INFO L158 Benchmark]: Toolchain (without parser) took 791592.55ms. Allocated memory was 172.0MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 120.4MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 777.6MB. Max. memory is 8.0GB. [2022-03-15 14:23:08,770 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 172.0MB. Free memory was 137.4MB in the beginning and 137.3MB in the end (delta: 74.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 14:23:08,770 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.66ms. Allocated memory is still 172.0MB. Free memory was 120.2MB in the beginning and 145.7MB in the end (delta: -25.5MB). Peak memory consumption was 11.7MB. Max. memory is 8.0GB. [2022-03-15 14:23:08,771 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.78ms. Allocated memory is still 172.0MB. Free memory was 145.7MB in the beginning and 144.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 14:23:08,771 INFO L158 Benchmark]: Boogie Preprocessor took 15.57ms. Allocated memory is still 172.0MB. Free memory was 144.1MB in the beginning and 142.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 14:23:08,771 INFO L158 Benchmark]: RCFGBuilder took 304.73ms. Allocated memory is still 172.0MB. Free memory was 142.6MB in the beginning and 130.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-15 14:23:08,771 INFO L158 Benchmark]: TraceAbstraction took 791023.70ms. Allocated memory was 172.0MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 129.4MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 787.0MB. Max. memory is 8.0GB. [2022-03-15 14:23:08,773 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 172.0MB. Free memory was 137.4MB in the beginning and 137.3MB in the end (delta: 74.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 203.66ms. Allocated memory is still 172.0MB. Free memory was 120.2MB in the beginning and 145.7MB in the end (delta: -25.5MB). Peak memory consumption was 11.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.78ms. Allocated memory is still 172.0MB. Free memory was 145.7MB in the beginning and 144.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.57ms. Allocated memory is still 172.0MB. Free memory was 144.1MB in the beginning and 142.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 304.73ms. Allocated memory is still 172.0MB. Free memory was 142.6MB in the beginning and 130.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 791023.70ms. Allocated memory was 172.0MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 129.4MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 787.0MB. 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: 76]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (69133states) and FLOYD_HOARE automaton (currently 98 states, 33 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 68 for 1127ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (69133states) and FLOYD_HOARE automaton (currently 98 states, 33 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 68 for 1127ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (69133states) and FLOYD_HOARE automaton (currently 98 states, 33 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 68 for 1127ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 102 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 790.9s, OverallIterations: 92, TraceHistogramMax: 3, PathProgramHistogramMax: 81, EmptinessCheckTime: 3.7s, AutomataDifference: 665.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 70747 SdHoareTripleChecker+Valid, 90.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70747 mSDsluCounter, 193710 SdHoareTripleChecker+Invalid, 80.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 194534 mSDsCounter, 8473 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 99713 IncrementalHoareTripleChecker+Invalid, 108186 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8473 mSolverCounterUnsat, 14705 mSDtfsCounter, 99713 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21162 GetRequests, 11864 SyntacticMatches, 72 SemanticMatches, 9225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567673 ImplicationChecksByTransitivity, 573.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69133occurred in iteration=91, InterpolantAutomatonStates: 8462, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 45.4s AutomataMinimizationTime, 91 MinimizatonAttempts, 430504 StatesRemovedByMinimization, 90 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 49.9s InterpolantComputationTime, 13375 NumberOfCodeBlocks, 13258 NumberOfCodeBlocksAsserted, 270 NumberOfCheckSat, 19387 ConstructedInterpolants, 0 QuantifiedInterpolants, 76848 SizeOfPredicates, 745 NumberOfNonLiveVariables, 14051 ConjunctsInSsa, 1344 ConjunctsInUnsatCore, 253 InterpolantComputations, 12 PerfectInterpolantSequences, 1718/3277 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