/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/fibonacci.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 20:56:55,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 20:56:55,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 20:56:55,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 20:56:55,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 20:56:55,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 20:56:55,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 20:56:55,503 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 20:56:55,553 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 20:56:55,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 20:56:55,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 20:56:55,555 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 20:56:55,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 20:56:55,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 20:56:55,560 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 20:56:55,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 20:56:55,560 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 20:56:55,561 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 20:56:55,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 20:56:55,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 20:56:55,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 20:56:55,562 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 20:56:55,563 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 20:56:55,563 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 20:56:55,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 20:56:55,564 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 20:56:55,564 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 20:56:55,564 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 20:56:55,564 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 20:56:55,564 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 20:56:55,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 20:56:55,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 20:56:55,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 20:56:55,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 20:56:55,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 20:56:55,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 20:56:55,566 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 20:56:55,566 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 20:56:55,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 20:56:55,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 20:56:55,567 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 20:56:56,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 20:56:56,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 20:56:56,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 20:56:56,084 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 20:56:56,085 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 20:56:56,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/fibonacci.wvr.c [2021-10-06 20:56:56,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93a60bac4/ad0cecebc4be422d9ee649e47eb83ba7/FLAGf7fc4e87f [2021-10-06 20:56:56,820 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 20:56:56,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2021-10-06 20:56:56,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93a60bac4/ad0cecebc4be422d9ee649e47eb83ba7/FLAGf7fc4e87f [2021-10-06 20:56:57,193 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93a60bac4/ad0cecebc4be422d9ee649e47eb83ba7 [2021-10-06 20:56:57,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 20:56:57,207 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 20:56:57,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 20:56:57,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 20:56:57,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 20:56:57,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a0b6282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57, skipping insertion in model container [2021-10-06 20:56:57,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 20:56:57,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 20:56:57,548 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c[2359,2372] [2021-10-06 20:56:57,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 20:56:57,571 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 20:56:57,624 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c[2359,2372] [2021-10-06 20:56:57,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 20:56:57,650 INFO L208 MainTranslator]: Completed translation [2021-10-06 20:56:57,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57 WrapperNode [2021-10-06 20:56:57,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 20:56:57,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 20:56:57,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 20:56:57,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 20:56:57,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 20:56:57,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 20:56:57,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 20:56:57,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 20:56:57,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 20:56:57,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 20:56:57,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 20:56:57,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 20:56:57,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,776 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 20:56:57,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 20:56:57,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-06 20:56:57,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-06 20:56:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 20:56:57,872 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 20:56:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 20:56:57,872 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 20:56:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 20:56:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 20:56:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 20:56:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 20:56:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 20:56:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 20:56:57,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 20:56:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 20:56:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 20:56:57,876 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 20:56:58,429 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 20:56:58,429 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-06 20:56:58,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 08:56:58 BoogieIcfgContainer [2021-10-06 20:56:58,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 20:56:58,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 20:56:58,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 20:56:58,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 20:56:58,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 08:56:57" (1/3) ... [2021-10-06 20:56:58,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b99f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 08:56:58, skipping insertion in model container [2021-10-06 20:56:58,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (2/3) ... [2021-10-06 20:56:58,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b99f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 08:56:58, skipping insertion in model container [2021-10-06 20:56:58,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 08:56:58" (3/3) ... [2021-10-06 20:56:58,441 INFO L111 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2021-10-06 20:56:58,448 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 20:56:58,448 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-06 20:56:58,448 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 20:56:58,483 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,483 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,484 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,484 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,484 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,485 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,485 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,485 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,486 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,486 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,486 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,486 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,486 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,487 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,487 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,487 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,488 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,488 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,488 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,488 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,488 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,489 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,489 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,489 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,489 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,490 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,490 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,490 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,491 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,491 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,491 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,492 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,492 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,492 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,493 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,493 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,493 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,493 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,494 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,494 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,494 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,494 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,495 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,495 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,495 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,495 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,495 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,496 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,496 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,496 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,496 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,497 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,497 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,497 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,497 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,497 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,501 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,502 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,502 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,502 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,503 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,506 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,506 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,506 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,507 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,507 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,513 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 20:56:58,569 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 20:56:58,576 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=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-10-06 20:56:58,577 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-06 20:56:58,594 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 20:56:58,607 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 114 transitions, 244 flow [2021-10-06 20:56:58,611 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 114 transitions, 244 flow [2021-10-06 20:56:58,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 113 places, 114 transitions, 244 flow [2021-10-06 20:56:58,672 INFO L129 PetriNetUnfolder]: 8/112 cut-off events. [2021-10-06 20:56:58,672 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 20:56:58,682 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 112 events. 8/112 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 127 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2021-10-06 20:56:58,687 INFO L116 LiptonReduction]: Number of co-enabled transitions 1248 [2021-10-06 20:57:09,451 INFO L131 LiptonReduction]: Checked pairs total: 1122 [2021-10-06 20:57:09,452 INFO L133 LiptonReduction]: Total number of compositions: 112 [2021-10-06 20:57:09,462 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2021-10-06 20:57:09,480 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:09,482 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:09,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 20:57:09,488 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:09,489 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 20:57:09,489 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:09,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:09,495 INFO L82 PathProgramCache]: Analyzing trace with hash 443, now seen corresponding path program 1 times [2021-10-06 20:57:09,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:09,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339175347] [2021-10-06 20:57:09,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:09,510 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:09,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:09,513 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:09,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 20:57:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:09,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 20:57:09,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:09,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:09,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:09,579 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:09,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339175347] [2021-10-06 20:57:09,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339175347] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:09,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:09,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 20:57:09,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438625277] [2021-10-06 20:57:09,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 20:57:09,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:09,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 20:57:09,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 20:57:09,606 INFO L87 Difference]: Start difference. First operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:09,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:09,623 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2021-10-06 20:57:09,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 20:57:09,625 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-06 20:57:09,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:09,637 INFO L225 Difference]: With dead ends: 64 [2021-10-06 20:57:09,637 INFO L226 Difference]: Without dead ends: 64 [2021-10-06 20:57:09,638 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 20:57:09,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-06 20:57:09,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-06 20:57:09,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 2.6491228070175437) internal successors, (151), 63 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:09,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2021-10-06 20:57:09,681 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 1 [2021-10-06 20:57:09,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:09,682 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2021-10-06 20:57:09,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:09,682 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2021-10-06 20:57:09,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 20:57:09,683 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:09,683 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 20:57:09,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-06 20:57:09,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:09,895 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:09,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:09,897 INFO L82 PathProgramCache]: Analyzing trace with hash 434410, now seen corresponding path program 1 times [2021-10-06 20:57:09,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:09,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506198833] [2021-10-06 20:57:09,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:09,899 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:09,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:09,900 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:09,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 20:57:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:09,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 20:57:09,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:10,174 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-06 20:57:10,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-06 20:57:10,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:10,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:10,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:10,385 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:10,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506198833] [2021-10-06 20:57:10,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506198833] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:10,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:10,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:57:10,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830610572] [2021-10-06 20:57:10,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:57:10,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:10,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:57:10,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:10,393 INFO L87 Difference]: Start difference. First operand 64 states and 151 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:10,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:10,427 INFO L93 Difference]: Finished difference Result 58 states and 139 transitions. [2021-10-06 20:57:10,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:10,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 20:57:10,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:10,430 INFO L225 Difference]: With dead ends: 58 [2021-10-06 20:57:10,430 INFO L226 Difference]: Without dead ends: 58 [2021-10-06 20:57:10,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:10,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-06 20:57:10,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-06 20:57:10,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 2.6226415094339623) internal successors, (139), 57 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:10,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2021-10-06 20:57:10,440 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 3 [2021-10-06 20:57:10,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:10,440 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2021-10-06 20:57:10,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:10,441 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2021-10-06 20:57:10,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 20:57:10,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:10,442 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 20:57:10,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:10,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:10,654 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:10,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:10,655 INFO L82 PathProgramCache]: Analyzing trace with hash 434412, now seen corresponding path program 1 times [2021-10-06 20:57:10,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:10,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875959061] [2021-10-06 20:57:10,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:10,657 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:10,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:10,658 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:10,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 20:57:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:10,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 20:57:10,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:10,805 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-06 20:57:10,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-06 20:57:11,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:11,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:11,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:11,157 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:11,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875959061] [2021-10-06 20:57:11,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875959061] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:11,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:11,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 20:57:11,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512698162] [2021-10-06 20:57:11,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 20:57:11,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:11,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 20:57:11,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:57:11,160 INFO L87 Difference]: Start difference. First operand 58 states and 139 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:11,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:11,181 INFO L93 Difference]: Finished difference Result 52 states and 127 transitions. [2021-10-06 20:57:11,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:11,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 20:57:11,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:11,183 INFO L225 Difference]: With dead ends: 52 [2021-10-06 20:57:11,183 INFO L226 Difference]: Without dead ends: 52 [2021-10-06 20:57:11,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:57:11,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-06 20:57:11,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-06 20:57:11,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 51 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:11,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2021-10-06 20:57:11,191 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 3 [2021-10-06 20:57:11,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:11,192 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2021-10-06 20:57:11,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:11,192 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2021-10-06 20:57:11,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 20:57:11,193 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:11,193 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 20:57:11,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:11,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:11,405 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:11,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:11,406 INFO L82 PathProgramCache]: Analyzing trace with hash 417478536, now seen corresponding path program 1 times [2021-10-06 20:57:11,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:11,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118437589] [2021-10-06 20:57:11,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:11,408 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:11,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:11,409 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:11,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 20:57:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:11,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 20:57:11,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:11,589 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-06 20:57:11,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-06 20:57:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:11,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:11,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:11,919 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:11,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118437589] [2021-10-06 20:57:11,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118437589] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:11,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:11,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 20:57:11,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038061370] [2021-10-06 20:57:11,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 20:57:11,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:11,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 20:57:11,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:57:11,922 INFO L87 Difference]: Start difference. First operand 52 states and 127 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:11,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:11,940 INFO L93 Difference]: Finished difference Result 43 states and 100 transitions. [2021-10-06 20:57:11,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:11,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 20:57:11,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:11,942 INFO L225 Difference]: With dead ends: 43 [2021-10-06 20:57:11,942 INFO L226 Difference]: Without dead ends: 43 [2021-10-06 20:57:11,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:57:11,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-06 20:57:11,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-06 20:57:11,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 42 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) [2021-10-06 20:57:11,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 100 transitions. [2021-10-06 20:57:11,948 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 100 transitions. Word has length 5 [2021-10-06 20:57:11,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:11,949 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 100 transitions. [2021-10-06 20:57:11,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:11,950 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 100 transitions. [2021-10-06 20:57:11,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 20:57:11,950 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:11,950 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 20:57:11,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:12,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:12,163 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:12,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:12,165 INFO L82 PathProgramCache]: Analyzing trace with hash 417478537, now seen corresponding path program 1 times [2021-10-06 20:57:12,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:12,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917081406] [2021-10-06 20:57:12,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:12,167 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:12,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:12,168 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:12,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 20:57:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:12,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 20:57:12,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:12,330 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-06 20:57:12,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-06 20:57:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:12,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:12,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:12,488 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:12,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917081406] [2021-10-06 20:57:12,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917081406] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:12,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:12,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:57:12,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115072392] [2021-10-06 20:57:12,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:57:12,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:12,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:57:12,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:12,491 INFO L87 Difference]: Start difference. First operand 43 states and 100 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:12,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:12,509 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2021-10-06 20:57:12,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:12,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 20:57:12,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:12,511 INFO L225 Difference]: With dead ends: 34 [2021-10-06 20:57:12,511 INFO L226 Difference]: Without dead ends: 34 [2021-10-06 20:57:12,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:12,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-06 20:57:12,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-06 20:57:12,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:12,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-06 20:57:12,516 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 5 [2021-10-06 20:57:12,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:12,516 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-06 20:57:12,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:12,517 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-06 20:57:12,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 20:57:12,518 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:12,518 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:12,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:12,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:12,730 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:12,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:12,730 INFO L82 PathProgramCache]: Analyzing trace with hash -668129169, now seen corresponding path program 1 times [2021-10-06 20:57:12,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:12,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330533200] [2021-10-06 20:57:12,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:12,744 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:12,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:12,746 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:12,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 20:57:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:12,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 20:57:12,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:13,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:13,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:13,338 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:13,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330533200] [2021-10-06 20:57:13,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330533200] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:13,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:13,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-06 20:57:13,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024796600] [2021-10-06 20:57:13,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 20:57:13,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:13,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 20:57:13,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-06 20:57:13,342 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:13,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:13,500 INFO L93 Difference]: Finished difference Result 67 states and 139 transitions. [2021-10-06 20:57:13,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 20:57:13,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 20:57:13,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:13,502 INFO L225 Difference]: With dead ends: 67 [2021-10-06 20:57:13,502 INFO L226 Difference]: Without dead ends: 62 [2021-10-06 20:57:13,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 122.8ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-06 20:57:13,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-06 20:57:13,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2021-10-06 20:57:13,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.3137254901960786) internal successors, (118), 51 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:13,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 118 transitions. [2021-10-06 20:57:13,509 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 118 transitions. Word has length 13 [2021-10-06 20:57:13,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:13,509 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 118 transitions. [2021-10-06 20:57:13,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:13,510 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 118 transitions. [2021-10-06 20:57:13,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 20:57:13,511 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:13,511 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:13,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:13,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:13,724 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:13,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:13,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1435362803, now seen corresponding path program 2 times [2021-10-06 20:57:13,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:13,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654433743] [2021-10-06 20:57:13,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:57:13,727 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:13,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:13,728 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:13,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 20:57:13,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 20:57:13,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:13,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 20:57:13,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:13,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:13,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:14,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:14,256 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:14,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654433743] [2021-10-06 20:57:14,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1654433743] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:14,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:14,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-06 20:57:14,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452986705] [2021-10-06 20:57:14,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 20:57:14,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:14,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 20:57:14,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-06 20:57:14,259 INFO L87 Difference]: Start difference. First operand 52 states and 118 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:14,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:14,384 INFO L93 Difference]: Finished difference Result 61 states and 130 transitions. [2021-10-06 20:57:14,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 20:57:14,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 20:57:14,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:14,386 INFO L225 Difference]: With dead ends: 61 [2021-10-06 20:57:14,386 INFO L226 Difference]: Without dead ends: 56 [2021-10-06 20:57:14,387 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 117.8ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-06 20:57:14,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-06 20:57:14,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-10-06 20:57:14,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.2545454545454544) internal successors, (124), 55 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:14,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 124 transitions. [2021-10-06 20:57:14,392 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 124 transitions. Word has length 13 [2021-10-06 20:57:14,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:14,393 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 124 transitions. [2021-10-06 20:57:14,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:14,393 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 124 transitions. [2021-10-06 20:57:14,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:57:14,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:14,395 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:14,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:14,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:14,609 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:14,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:14,610 INFO L82 PathProgramCache]: Analyzing trace with hash 454229918, now seen corresponding path program 1 times [2021-10-06 20:57:14,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:14,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222192000] [2021-10-06 20:57:14,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:14,612 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:14,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:14,613 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:14,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 20:57:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:14,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 20:57:14,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:14,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:14,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:14,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:14,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:14,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [222192000] [2021-10-06 20:57:14,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [222192000] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:14,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:14,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-06 20:57:14,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700031898] [2021-10-06 20:57:14,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 20:57:14,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:14,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 20:57:14,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-06 20:57:14,834 INFO L87 Difference]: Start difference. First operand 56 states and 124 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:14,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:14,982 INFO L93 Difference]: Finished difference Result 74 states and 157 transitions. [2021-10-06 20:57:14,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 20:57:14,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:57:14,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:14,984 INFO L225 Difference]: With dead ends: 74 [2021-10-06 20:57:14,984 INFO L226 Difference]: Without dead ends: 64 [2021-10-06 20:57:14,985 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 65.8ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-06 20:57:14,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-06 20:57:14,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 50. [2021-10-06 20:57:14,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 2.2653061224489797) internal successors, (111), 49 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:14,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 111 transitions. [2021-10-06 20:57:14,989 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 111 transitions. Word has length 14 [2021-10-06 20:57:14,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:14,990 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 111 transitions. [2021-10-06 20:57:14,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:14,990 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 111 transitions. [2021-10-06 20:57:14,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:57:14,991 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:14,991 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:15,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-06 20:57:15,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:15,203 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:15,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:15,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1011633958, now seen corresponding path program 1 times [2021-10-06 20:57:15,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:15,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624618856] [2021-10-06 20:57:15,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:15,206 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:15,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:15,207 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:15,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 20:57:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:15,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 20:57:15,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:15,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:15,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:15,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:15,526 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:15,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624618856] [2021-10-06 20:57:15,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624618856] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:15,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:15,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-06 20:57:15,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431821964] [2021-10-06 20:57:15,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 20:57:15,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:15,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 20:57:15,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-06 20:57:15,529 INFO L87 Difference]: Start difference. First operand 50 states and 111 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:15,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:15,833 INFO L93 Difference]: Finished difference Result 104 states and 228 transitions. [2021-10-06 20:57:15,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 20:57:15,836 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:57:15,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:15,837 INFO L225 Difference]: With dead ends: 104 [2021-10-06 20:57:15,837 INFO L226 Difference]: Without dead ends: 104 [2021-10-06 20:57:15,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 192.5ms TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:57:15,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-06 20:57:15,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 52. [2021-10-06 20:57:15,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.3137254901960786) internal successors, (118), 51 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:15,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 118 transitions. [2021-10-06 20:57:15,849 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 118 transitions. Word has length 14 [2021-10-06 20:57:15,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:15,850 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 118 transitions. [2021-10-06 20:57:15,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:15,850 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 118 transitions. [2021-10-06 20:57:15,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:57:15,851 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:15,851 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:15,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:16,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:16,058 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:16,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:16,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1853329214, now seen corresponding path program 2 times [2021-10-06 20:57:16,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:16,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125782351] [2021-10-06 20:57:16,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:57:16,061 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:16,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:16,062 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:16,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 20:57:16,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:57:16,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:16,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 20:57:16,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:16,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:16,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:16,315 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:16,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125782351] [2021-10-06 20:57:16,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125782351] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:16,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:16,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-06 20:57:16,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437821652] [2021-10-06 20:57:16,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 20:57:16,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:16,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 20:57:16,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-06 20:57:16,317 INFO L87 Difference]: Start difference. First operand 52 states and 118 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:16,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:16,554 INFO L93 Difference]: Finished difference Result 102 states and 212 transitions. [2021-10-06 20:57:16,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 20:57:16,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:57:16,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:16,556 INFO L225 Difference]: With dead ends: 102 [2021-10-06 20:57:16,556 INFO L226 Difference]: Without dead ends: 96 [2021-10-06 20:57:16,557 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 89.1ms TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-10-06 20:57:16,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-06 20:57:16,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 58. [2021-10-06 20:57:16,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.3684210526315788) internal successors, (135), 57 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) [2021-10-06 20:57:16,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 135 transitions. [2021-10-06 20:57:16,564 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 135 transitions. Word has length 14 [2021-10-06 20:57:16,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:16,564 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 135 transitions. [2021-10-06 20:57:16,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:16,565 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 135 transitions. [2021-10-06 20:57:16,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:57:16,565 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:16,566 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:16,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:16,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:16,774 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:16,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:16,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1049929048, now seen corresponding path program 2 times [2021-10-06 20:57:16,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:16,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285020705] [2021-10-06 20:57:16,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:57:16,777 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:16,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:16,778 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:16,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 20:57:16,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:57:16,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:16,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 20:57:16,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:16,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:16,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:17,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:17,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:17,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285020705] [2021-10-06 20:57:17,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285020705] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:17,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:17,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-06 20:57:17,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304892256] [2021-10-06 20:57:17,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 20:57:17,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:17,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 20:57:17,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-06 20:57:17,087 INFO L87 Difference]: Start difference. First operand 58 states and 135 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:17,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:17,383 INFO L93 Difference]: Finished difference Result 120 states and 269 transitions. [2021-10-06 20:57:17,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 20:57:17,385 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:57:17,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:17,386 INFO L225 Difference]: With dead ends: 120 [2021-10-06 20:57:17,386 INFO L226 Difference]: Without dead ends: 118 [2021-10-06 20:57:17,387 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 120.9ms TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-10-06 20:57:17,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-06 20:57:17,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 66. [2021-10-06 20:57:17,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.5384615384615383) internal successors, (165), 65 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:17,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 165 transitions. [2021-10-06 20:57:17,392 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 165 transitions. Word has length 14 [2021-10-06 20:57:17,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:17,393 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 165 transitions. [2021-10-06 20:57:17,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:17,393 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 165 transitions. [2021-10-06 20:57:17,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:57:17,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:17,394 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:17,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:17,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:17,607 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:17,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:17,608 INFO L82 PathProgramCache]: Analyzing trace with hash 780489574, now seen corresponding path program 3 times [2021-10-06 20:57:17,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:17,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565350393] [2021-10-06 20:57:17,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:57:17,610 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:17,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:17,611 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:17,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-06 20:57:17,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 20:57:17,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:17,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 20:57:17,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:17,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:17,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:17,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:17,954 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:17,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565350393] [2021-10-06 20:57:17,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565350393] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:17,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:17,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-06 20:57:17,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131518557] [2021-10-06 20:57:17,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 20:57:17,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:17,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 20:57:17,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-06 20:57:17,957 INFO L87 Difference]: Start difference. First operand 66 states and 165 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:18,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:18,257 INFO L93 Difference]: Finished difference Result 126 states and 285 transitions. [2021-10-06 20:57:18,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 20:57:18,258 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:57:18,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:18,259 INFO L225 Difference]: With dead ends: 126 [2021-10-06 20:57:18,260 INFO L226 Difference]: Without dead ends: 126 [2021-10-06 20:57:18,260 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 154.9ms TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:57:18,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-06 20:57:18,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 64. [2021-10-06 20:57:18,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.5714285714285716) internal successors, (162), 63 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) [2021-10-06 20:57:18,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 162 transitions. [2021-10-06 20:57:18,266 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 162 transitions. Word has length 14 [2021-10-06 20:57:18,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:18,266 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 162 transitions. [2021-10-06 20:57:18,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:18,266 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 162 transitions. [2021-10-06 20:57:18,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:57:18,267 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:18,267 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:18,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:18,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:18,477 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:18,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:18,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1523192106, now seen corresponding path program 4 times [2021-10-06 20:57:18,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:18,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273473301] [2021-10-06 20:57:18,479 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:57:18,479 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:18,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:18,481 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:18,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-06 20:57:18,600 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:57:18,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:18,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 20:57:18,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:18,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:18,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:18,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:18,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:18,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273473301] [2021-10-06 20:57:18,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273473301] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:18,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:18,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-06 20:57:18,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306129236] [2021-10-06 20:57:18,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 20:57:18,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:18,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 20:57:18,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-06 20:57:18,699 INFO L87 Difference]: Start difference. First operand 64 states and 162 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:18,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:18,816 INFO L93 Difference]: Finished difference Result 88 states and 210 transitions. [2021-10-06 20:57:18,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 20:57:18,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:57:18,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:18,823 INFO L225 Difference]: With dead ends: 88 [2021-10-06 20:57:18,823 INFO L226 Difference]: Without dead ends: 84 [2021-10-06 20:57:18,823 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 61.4ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-06 20:57:18,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-06 20:57:18,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 62. [2021-10-06 20:57:18,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.5737704918032787) internal successors, (157), 61 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:18,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 157 transitions. [2021-10-06 20:57:18,834 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 157 transitions. Word has length 14 [2021-10-06 20:57:18,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:18,834 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 157 transitions. [2021-10-06 20:57:18,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:18,834 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 157 transitions. [2021-10-06 20:57:18,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:57:18,840 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:18,840 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:18,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:19,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:19,047 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:19,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:19,048 INFO L82 PathProgramCache]: Analyzing trace with hash 643927326, now seen corresponding path program 3 times [2021-10-06 20:57:19,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:19,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207966061] [2021-10-06 20:57:19,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:57:19,050 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:19,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:19,051 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:19,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-06 20:57:19,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 20:57:19,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:19,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 20:57:19,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:19,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:19,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:19,367 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:19,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207966061] [2021-10-06 20:57:19,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207966061] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:19,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:19,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-06 20:57:19,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706863273] [2021-10-06 20:57:19,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 20:57:19,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:19,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 20:57:19,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-06 20:57:19,369 INFO L87 Difference]: Start difference. First operand 62 states and 157 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:19,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:19,622 INFO L93 Difference]: Finished difference Result 114 states and 270 transitions. [2021-10-06 20:57:19,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 20:57:19,624 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:57:19,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:19,626 INFO L225 Difference]: With dead ends: 114 [2021-10-06 20:57:19,626 INFO L226 Difference]: Without dead ends: 114 [2021-10-06 20:57:19,627 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 135.9ms TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:57:19,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-06 20:57:19,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 62. [2021-10-06 20:57:19,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.5737704918032787) internal successors, (157), 61 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:19,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 157 transitions. [2021-10-06 20:57:19,631 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 157 transitions. Word has length 14 [2021-10-06 20:57:19,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:19,632 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 157 transitions. [2021-10-06 20:57:19,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:19,632 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 157 transitions. [2021-10-06 20:57:19,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:57:19,633 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:19,633 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:19,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:19,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:19,842 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:19,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:19,843 INFO L82 PathProgramCache]: Analyzing trace with hash 310297500, now seen corresponding path program 5 times [2021-10-06 20:57:19,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:19,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808844247] [2021-10-06 20:57:19,844 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:57:19,844 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:19,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:19,846 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:19,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-06 20:57:19,963 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:57:19,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:19,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 20:57:19,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:20,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:20,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:20,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:20,079 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:20,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808844247] [2021-10-06 20:57:20,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808844247] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:20,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:20,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-06 20:57:20,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960693406] [2021-10-06 20:57:20,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 20:57:20,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:20,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 20:57:20,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-06 20:57:20,082 INFO L87 Difference]: Start difference. First operand 62 states and 157 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:20,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:20,284 INFO L93 Difference]: Finished difference Result 98 states and 219 transitions. [2021-10-06 20:57:20,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 20:57:20,286 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:57:20,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:20,287 INFO L225 Difference]: With dead ends: 98 [2021-10-06 20:57:20,287 INFO L226 Difference]: Without dead ends: 92 [2021-10-06 20:57:20,287 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 92.9ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-06 20:57:20,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-06 20:57:20,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 66. [2021-10-06 20:57:20,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.5384615384615383) internal successors, (165), 65 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:20,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 165 transitions. [2021-10-06 20:57:20,292 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 165 transitions. Word has length 14 [2021-10-06 20:57:20,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:20,293 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 165 transitions. [2021-10-06 20:57:20,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:20,293 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 165 transitions. [2021-10-06 20:57:20,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:57:20,294 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:20,294 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:20,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:20,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:20,504 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:20,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:20,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1113697666, now seen corresponding path program 4 times [2021-10-06 20:57:20,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:20,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695301044] [2021-10-06 20:57:20,506 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:57:20,506 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:20,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:20,507 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:20,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-06 20:57:20,630 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:57:20,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:20,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 20:57:20,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:20,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:20,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:20,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:20,809 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:20,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695301044] [2021-10-06 20:57:20,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695301044] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:20,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:20,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-06 20:57:20,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159111266] [2021-10-06 20:57:20,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 20:57:20,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:20,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 20:57:20,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-06 20:57:20,811 INFO L87 Difference]: Start difference. First operand 66 states and 165 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:21,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:21,145 INFO L93 Difference]: Finished difference Result 136 states and 307 transitions. [2021-10-06 20:57:21,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 20:57:21,148 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:57:21,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:21,150 INFO L225 Difference]: With dead ends: 136 [2021-10-06 20:57:21,150 INFO L226 Difference]: Without dead ends: 134 [2021-10-06 20:57:21,150 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 158.4ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-10-06 20:57:21,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-06 20:57:21,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 68. [2021-10-06 20:57:21,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.5671641791044775) internal successors, (172), 67 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:21,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 172 transitions. [2021-10-06 20:57:21,155 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 172 transitions. Word has length 14 [2021-10-06 20:57:21,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:21,155 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 172 transitions. [2021-10-06 20:57:21,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:21,156 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 172 transitions. [2021-10-06 20:57:21,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:57:21,157 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:21,157 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:21,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:21,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:21,367 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:21,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:21,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1350851008, now seen corresponding path program 6 times [2021-10-06 20:57:21,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:21,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074195857] [2021-10-06 20:57:21,369 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:57:21,369 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:21,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:21,370 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:21,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-06 20:57:21,503 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 20:57:21,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:21,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 20:57:21,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:21,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:21,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:21,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:21,691 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:21,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074195857] [2021-10-06 20:57:21,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074195857] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:21,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:21,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-06 20:57:21,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183218021] [2021-10-06 20:57:21,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 20:57:21,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:21,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 20:57:21,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-06 20:57:21,693 INFO L87 Difference]: Start difference. First operand 68 states and 172 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:21,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:21,961 INFO L93 Difference]: Finished difference Result 112 states and 259 transitions. [2021-10-06 20:57:21,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 20:57:21,963 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:57:21,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:21,964 INFO L225 Difference]: With dead ends: 112 [2021-10-06 20:57:21,964 INFO L226 Difference]: Without dead ends: 112 [2021-10-06 20:57:21,964 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-10-06 20:57:21,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-06 20:57:21,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 60. [2021-10-06 20:57:21,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.5084745762711864) internal successors, (148), 59 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:21,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 148 transitions. [2021-10-06 20:57:21,968 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 148 transitions. Word has length 14 [2021-10-06 20:57:21,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:21,969 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 148 transitions. [2021-10-06 20:57:21,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:21,969 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 148 transitions. [2021-10-06 20:57:21,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:57:21,970 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:21,970 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:21,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:22,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:22,178 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:22,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:22,179 INFO L82 PathProgramCache]: Analyzing trace with hash 987279303, now seen corresponding path program 1 times [2021-10-06 20:57:22,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:22,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063717903] [2021-10-06 20:57:22,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:22,180 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:22,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:22,182 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:22,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-06 20:57:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:22,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 20:57:22,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:22,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:22,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:23,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:23,200 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:23,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063717903] [2021-10-06 20:57:23,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063717903] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:23,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:23,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-06 20:57:23,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429473557] [2021-10-06 20:57:23,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 20:57:23,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:23,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 20:57:23,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-06 20:57:23,203 INFO L87 Difference]: Start difference. First operand 60 states and 148 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:23,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:23,433 INFO L93 Difference]: Finished difference Result 85 states and 199 transitions. [2021-10-06 20:57:23,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 20:57:23,434 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:57:23,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:23,435 INFO L225 Difference]: With dead ends: 85 [2021-10-06 20:57:23,435 INFO L226 Difference]: Without dead ends: 80 [2021-10-06 20:57:23,435 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 323.6ms TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:23,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-06 20:57:23,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2021-10-06 20:57:23,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 2.453333333333333) internal successors, (184), 75 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:23,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 184 transitions. [2021-10-06 20:57:23,439 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 184 transitions. Word has length 15 [2021-10-06 20:57:23,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:23,440 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 184 transitions. [2021-10-06 20:57:23,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:23,440 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 184 transitions. [2021-10-06 20:57:23,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:57:23,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:23,441 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:23,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:23,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:23,651 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:23,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:23,652 INFO L82 PathProgramCache]: Analyzing trace with hash -516879663, now seen corresponding path program 2 times [2021-10-06 20:57:23,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:23,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518078671] [2021-10-06 20:57:23,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:57:23,653 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:23,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:23,654 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:23,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-06 20:57:23,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:57:23,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:23,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 20:57:23,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:24,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:24,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:24,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:24,594 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:24,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518078671] [2021-10-06 20:57:24,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518078671] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:24,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:24,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-06 20:57:24,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225625293] [2021-10-06 20:57:24,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 20:57:24,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:24,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 20:57:24,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-06 20:57:24,597 INFO L87 Difference]: Start difference. First operand 76 states and 184 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:24,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:24,892 INFO L93 Difference]: Finished difference Result 99 states and 225 transitions. [2021-10-06 20:57:24,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 20:57:24,892 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:57:24,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:24,894 INFO L225 Difference]: With dead ends: 99 [2021-10-06 20:57:24,894 INFO L226 Difference]: Without dead ends: 94 [2021-10-06 20:57:24,894 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 327.7ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-06 20:57:24,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-06 20:57:24,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 78. [2021-10-06 20:57:24,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 2.5064935064935066) internal successors, (193), 77 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:24,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 193 transitions. [2021-10-06 20:57:24,901 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 193 transitions. Word has length 15 [2021-10-06 20:57:24,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:24,901 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 193 transitions. [2021-10-06 20:57:24,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:24,902 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 193 transitions. [2021-10-06 20:57:24,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:57:24,903 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:24,903 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:24,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:25,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:25,104 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:25,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:25,105 INFO L82 PathProgramCache]: Analyzing trace with hash -461468403, now seen corresponding path program 3 times [2021-10-06 20:57:25,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:25,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107434282] [2021-10-06 20:57:25,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:57:25,106 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:25,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:25,107 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:25,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-06 20:57:25,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 20:57:25,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:25,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 20:57:25,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:25,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:25,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:26,035 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:26,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107434282] [2021-10-06 20:57:26,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2107434282] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:26,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:26,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-06 20:57:26,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109162969] [2021-10-06 20:57:26,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 20:57:26,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:26,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 20:57:26,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-06 20:57:26,036 INFO L87 Difference]: Start difference. First operand 78 states and 193 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:26,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:26,267 INFO L93 Difference]: Finished difference Result 93 states and 218 transitions. [2021-10-06 20:57:26,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 20:57:26,268 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:57:26,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:26,270 INFO L225 Difference]: With dead ends: 93 [2021-10-06 20:57:26,270 INFO L226 Difference]: Without dead ends: 88 [2021-10-06 20:57:26,270 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 298.5ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-06 20:57:26,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-06 20:57:26,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 78. [2021-10-06 20:57:26,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 2.5064935064935066) internal successors, (193), 77 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:26,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 193 transitions. [2021-10-06 20:57:26,275 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 193 transitions. Word has length 15 [2021-10-06 20:57:26,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:26,276 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 193 transitions. [2021-10-06 20:57:26,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:26,276 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 193 transitions. [2021-10-06 20:57:26,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:57:26,277 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:26,277 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:26,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:26,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:26,478 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:26,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:26,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1505182599, now seen corresponding path program 4 times [2021-10-06 20:57:26,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:26,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840160144] [2021-10-06 20:57:26,480 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:57:26,480 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:26,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:26,482 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:26,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-06 20:57:26,652 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:57:26,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:26,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 20:57:26,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:26,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:26,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:27,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:27,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:27,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840160144] [2021-10-06 20:57:27,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1840160144] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:27,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:27,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-06 20:57:27,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431365529] [2021-10-06 20:57:27,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 20:57:27,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:27,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 20:57:27,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-06 20:57:27,444 INFO L87 Difference]: Start difference. First operand 78 states and 193 transitions. Second operand has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:27,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:27,675 INFO L93 Difference]: Finished difference Result 93 states and 222 transitions. [2021-10-06 20:57:27,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 20:57:27,675 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:57:27,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:27,676 INFO L225 Difference]: With dead ends: 93 [2021-10-06 20:57:27,677 INFO L226 Difference]: Without dead ends: 88 [2021-10-06 20:57:27,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 303.3ms TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:27,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-06 20:57:27,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2021-10-06 20:57:27,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.5058823529411764) internal successors, (213), 85 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:27,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 213 transitions. [2021-10-06 20:57:27,681 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 213 transitions. Word has length 15 [2021-10-06 20:57:27,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:27,682 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 213 transitions. [2021-10-06 20:57:27,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:27,682 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 213 transitions. [2021-10-06 20:57:27,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:57:27,683 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:27,683 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:27,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:27,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:27,896 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:27,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:27,896 INFO L82 PathProgramCache]: Analyzing trace with hash -211377169, now seen corresponding path program 5 times [2021-10-06 20:57:27,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:27,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967495861] [2021-10-06 20:57:27,897 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:57:27,898 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:27,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:27,899 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:27,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-06 20:57:28,125 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:57:28,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:28,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 20:57:28,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:28,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:28,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:28,850 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:28,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967495861] [2021-10-06 20:57:28,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967495861] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:28,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:28,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-06 20:57:28,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053292993] [2021-10-06 20:57:28,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 20:57:28,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:28,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 20:57:28,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-06 20:57:28,853 INFO L87 Difference]: Start difference. First operand 86 states and 213 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:29,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:29,136 INFO L93 Difference]: Finished difference Result 107 states and 250 transitions. [2021-10-06 20:57:29,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 20:57:29,137 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:57:29,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:29,139 INFO L225 Difference]: With dead ends: 107 [2021-10-06 20:57:29,139 INFO L226 Difference]: Without dead ends: 102 [2021-10-06 20:57:29,140 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 277.2ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-06 20:57:29,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-06 20:57:29,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 88. [2021-10-06 20:57:29,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.5517241379310347) internal successors, (222), 87 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:29,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 222 transitions. [2021-10-06 20:57:29,145 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 222 transitions. Word has length 15 [2021-10-06 20:57:29,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:29,145 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 222 transitions. [2021-10-06 20:57:29,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:29,146 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 222 transitions. [2021-10-06 20:57:29,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:57:29,147 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:29,147 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:29,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:29,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:29,360 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:29,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:29,362 INFO L82 PathProgramCache]: Analyzing trace with hash -155965909, now seen corresponding path program 6 times [2021-10-06 20:57:29,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:29,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712782481] [2021-10-06 20:57:29,363 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:57:29,363 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:29,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:29,365 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:29,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-06 20:57:29,585 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 20:57:29,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:29,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 20:57:29,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:29,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:29,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:30,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:30,237 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:30,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712782481] [2021-10-06 20:57:30,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712782481] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:30,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:30,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-06 20:57:30,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275997203] [2021-10-06 20:57:30,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 20:57:30,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:30,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 20:57:30,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-06 20:57:30,239 INFO L87 Difference]: Start difference. First operand 88 states and 222 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:30,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:30,493 INFO L93 Difference]: Finished difference Result 99 states and 240 transitions. [2021-10-06 20:57:30,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 20:57:30,493 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:57:30,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:30,494 INFO L225 Difference]: With dead ends: 99 [2021-10-06 20:57:30,494 INFO L226 Difference]: Without dead ends: 94 [2021-10-06 20:57:30,495 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 272.7ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-06 20:57:30,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-06 20:57:30,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 86. [2021-10-06 20:57:30,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.5058823529411764) internal successors, (213), 85 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:30,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 213 transitions. [2021-10-06 20:57:30,499 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 213 transitions. Word has length 15 [2021-10-06 20:57:30,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:30,500 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 213 transitions. [2021-10-06 20:57:30,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:30,500 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 213 transitions. [2021-10-06 20:57:30,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:30,501 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:30,501 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:30,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:30,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:30,714 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:30,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:30,715 INFO L82 PathProgramCache]: Analyzing trace with hash 232284998, now seen corresponding path program 7 times [2021-10-06 20:57:30,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:30,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377336579] [2021-10-06 20:57:30,716 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:57:30,716 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:30,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:30,718 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:30,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-06 20:57:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:30,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:57:30,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:31,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:31,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:31,177 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:31,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377336579] [2021-10-06 20:57:31,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377336579] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:31,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:31,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 20:57:31,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062962048] [2021-10-06 20:57:31,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:57:31,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:31,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:57:31,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:31,180 INFO L87 Difference]: Start difference. First operand 86 states and 213 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:31,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:31,462 INFO L93 Difference]: Finished difference Result 116 states and 270 transitions. [2021-10-06 20:57:31,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 20:57:31,464 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:31,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:31,466 INFO L225 Difference]: With dead ends: 116 [2021-10-06 20:57:31,466 INFO L226 Difference]: Without dead ends: 102 [2021-10-06 20:57:31,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 211.5ms TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-10-06 20:57:31,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-06 20:57:31,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 80. [2021-10-06 20:57:31,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.5316455696202533) internal successors, (200), 79 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:31,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 200 transitions. [2021-10-06 20:57:31,470 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 200 transitions. Word has length 16 [2021-10-06 20:57:31,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:31,470 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 200 transitions. [2021-10-06 20:57:31,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:31,471 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 200 transitions. [2021-10-06 20:57:31,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:31,471 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:31,472 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:31,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:31,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:31,681 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:31,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:31,682 INFO L82 PathProgramCache]: Analyzing trace with hash 331941054, now seen corresponding path program 8 times [2021-10-06 20:57:31,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:31,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961838370] [2021-10-06 20:57:31,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:57:31,683 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:31,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:31,684 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:31,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-06 20:57:31,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:57:31,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:31,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:57:31,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:32,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:32,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:32,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:32,281 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:32,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961838370] [2021-10-06 20:57:32,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961838370] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:32,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:32,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 20:57:32,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49411649] [2021-10-06 20:57:32,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:57:32,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:32,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:57:32,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:57:32,284 INFO L87 Difference]: Start difference. First operand 80 states and 200 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:32,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:32,860 INFO L93 Difference]: Finished difference Result 180 states and 418 transitions. [2021-10-06 20:57:32,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:57:32,865 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:32,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:32,867 INFO L225 Difference]: With dead ends: 180 [2021-10-06 20:57:32,867 INFO L226 Difference]: Without dead ends: 180 [2021-10-06 20:57:32,868 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 481.4ms TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:57:32,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-06 20:57:32,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 82. [2021-10-06 20:57:32,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.5555555555555554) internal successors, (207), 81 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:32,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 207 transitions. [2021-10-06 20:57:32,880 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 207 transitions. Word has length 16 [2021-10-06 20:57:32,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:32,880 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 207 transitions. [2021-10-06 20:57:32,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:32,881 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 207 transitions. [2021-10-06 20:57:32,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:32,881 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:32,881 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:32,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:33,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:33,082 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:33,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:33,083 INFO L82 PathProgramCache]: Analyzing trace with hash -929216352, now seen corresponding path program 9 times [2021-10-06 20:57:33,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:33,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519349314] [2021-10-06 20:57:33,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:57:33,085 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:33,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:33,086 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:33,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-06 20:57:33,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 20:57:33,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:33,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:57:33,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:33,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:33,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:33,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:33,618 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:33,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519349314] [2021-10-06 20:57:33,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519349314] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:33,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:33,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 20:57:33,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70450218] [2021-10-06 20:57:33,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:57:33,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:33,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:57:33,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:33,621 INFO L87 Difference]: Start difference. First operand 82 states and 207 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:34,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:34,158 INFO L93 Difference]: Finished difference Result 158 states and 357 transitions. [2021-10-06 20:57:34,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:57:34,158 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:34,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:34,159 INFO L225 Difference]: With dead ends: 158 [2021-10-06 20:57:34,159 INFO L226 Difference]: Without dead ends: 150 [2021-10-06 20:57:34,160 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 378.9ms TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-10-06 20:57:34,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-06 20:57:34,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 98. [2021-10-06 20:57:34,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.556701030927835) internal successors, (248), 97 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:34,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 248 transitions. [2021-10-06 20:57:34,166 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 248 transitions. Word has length 16 [2021-10-06 20:57:34,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:34,167 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 248 transitions. [2021-10-06 20:57:34,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:34,167 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 248 transitions. [2021-10-06 20:57:34,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:34,168 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:34,168 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:34,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:34,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:34,381 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:34,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:34,382 INFO L82 PathProgramCache]: Analyzing trace with hash 849844350, now seen corresponding path program 10 times [2021-10-06 20:57:34,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:34,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116241637] [2021-10-06 20:57:34,383 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:57:34,383 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:34,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:34,384 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:34,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-06 20:57:34,615 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:57:34,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:34,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:57:34,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:34,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:34,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:34,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:34,899 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:34,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116241637] [2021-10-06 20:57:34,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116241637] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:34,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:34,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 20:57:34,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696241166] [2021-10-06 20:57:34,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:57:34,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:34,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:57:34,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:34,901 INFO L87 Difference]: Start difference. First operand 98 states and 248 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:35,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:35,327 INFO L93 Difference]: Finished difference Result 140 states and 346 transitions. [2021-10-06 20:57:35,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-06 20:57:35,328 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:35,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:35,329 INFO L225 Difference]: With dead ends: 140 [2021-10-06 20:57:35,330 INFO L226 Difference]: Without dead ends: 134 [2021-10-06 20:57:35,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 300.7ms TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2021-10-06 20:57:35,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-06 20:57:35,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 102. [2021-10-06 20:57:35,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.623762376237624) internal successors, (265), 101 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:35,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 265 transitions. [2021-10-06 20:57:35,335 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 265 transitions. Word has length 16 [2021-10-06 20:57:35,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:35,336 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 265 transitions. [2021-10-06 20:57:35,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:35,336 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 265 transitions. [2021-10-06 20:57:35,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:35,336 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:35,337 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:35,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-10-06 20:57:35,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:35,538 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:35,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:35,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1653244516, now seen corresponding path program 11 times [2021-10-06 20:57:35,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:35,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28735591] [2021-10-06 20:57:35,539 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:57:35,540 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:35,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:35,541 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:35,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-06 20:57:35,803 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 20:57:35,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:35,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:57:35,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:35,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:35,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:36,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:36,158 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:36,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28735591] [2021-10-06 20:57:36,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28735591] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:36,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:36,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 20:57:36,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194902541] [2021-10-06 20:57:36,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:57:36,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:36,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:57:36,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:57:36,160 INFO L87 Difference]: Start difference. First operand 102 states and 265 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:37,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:37,155 INFO L93 Difference]: Finished difference Result 210 states and 489 transitions. [2021-10-06 20:57:37,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 20:57:37,161 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:37,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:37,162 INFO L225 Difference]: With dead ends: 210 [2021-10-06 20:57:37,163 INFO L226 Difference]: Without dead ends: 208 [2021-10-06 20:57:37,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 687.4ms TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2021-10-06 20:57:37,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-06 20:57:37,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 104. [2021-10-06 20:57:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.7572815533980584) internal successors, (284), 103 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:37,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 284 transitions. [2021-10-06 20:57:37,172 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 284 transitions. Word has length 16 [2021-10-06 20:57:37,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:37,173 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 284 transitions. [2021-10-06 20:57:37,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:37,174 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 284 transitions. [2021-10-06 20:57:37,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:37,174 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:37,175 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:37,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:37,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:37,388 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:37,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:37,389 INFO L82 PathProgramCache]: Analyzing trace with hash -811304158, now seen corresponding path program 12 times [2021-10-06 20:57:37,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:37,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398086457] [2021-10-06 20:57:37,390 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:57:37,390 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:37,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:37,391 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:37,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-06 20:57:37,638 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 20:57:37,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:37,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:57:37,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:37,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:37,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:38,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:38,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:38,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398086457] [2021-10-06 20:57:38,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398086457] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:38,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:38,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 20:57:38,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162273178] [2021-10-06 20:57:38,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:57:38,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:38,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:57:38,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:57:38,106 INFO L87 Difference]: Start difference. First operand 104 states and 284 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:39,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:39,169 INFO L93 Difference]: Finished difference Result 224 states and 535 transitions. [2021-10-06 20:57:39,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 20:57:39,171 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:39,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:39,172 INFO L225 Difference]: With dead ends: 224 [2021-10-06 20:57:39,173 INFO L226 Difference]: Without dead ends: 224 [2021-10-06 20:57:39,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 894.7ms TimeCoverageRelationStatistics Valid=184, Invalid=466, Unknown=0, NotChecked=0, Total=650 [2021-10-06 20:57:39,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-06 20:57:39,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 108. [2021-10-06 20:57:39,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.803738317757009) internal successors, (300), 107 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:39,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 300 transitions. [2021-10-06 20:57:39,180 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 300 transitions. Word has length 16 [2021-10-06 20:57:39,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:39,180 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 300 transitions. [2021-10-06 20:57:39,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:39,181 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 300 transitions. [2021-10-06 20:57:39,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:39,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:39,182 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:39,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-10-06 20:57:39,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:39,396 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:39,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:39,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1756399742, now seen corresponding path program 13 times [2021-10-06 20:57:39,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:39,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345980100] [2021-10-06 20:57:39,397 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:57:39,397 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:39,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:39,398 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:39,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-06 20:57:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:39,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:57:39,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:39,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:39,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:40,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:40,197 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:40,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345980100] [2021-10-06 20:57:40,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345980100] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:40,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:40,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 20:57:40,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230374395] [2021-10-06 20:57:40,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:57:40,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:40,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:57:40,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:57:40,199 INFO L87 Difference]: Start difference. First operand 108 states and 300 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:41,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:41,392 INFO L93 Difference]: Finished difference Result 208 states and 501 transitions. [2021-10-06 20:57:41,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 20:57:41,393 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:41,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:41,395 INFO L225 Difference]: With dead ends: 208 [2021-10-06 20:57:41,395 INFO L226 Difference]: Without dead ends: 208 [2021-10-06 20:57:41,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1026.8ms TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:57:41,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-06 20:57:41,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 110. [2021-10-06 20:57:41,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.81651376146789) internal successors, (307), 109 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:41,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 307 transitions. [2021-10-06 20:57:41,401 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 307 transitions. Word has length 16 [2021-10-06 20:57:41,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:41,401 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 307 transitions. [2021-10-06 20:57:41,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:41,402 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 307 transitions. [2021-10-06 20:57:41,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:41,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:41,403 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:41,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:41,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:41,616 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:41,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:41,617 INFO L82 PathProgramCache]: Analyzing trace with hash -890734968, now seen corresponding path program 14 times [2021-10-06 20:57:41,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:41,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464785630] [2021-10-06 20:57:41,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:57:41,618 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:41,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:41,619 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:41,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-06 20:57:41,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:57:41,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:41,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:57:41,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:41,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:41,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:42,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:42,123 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:42,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464785630] [2021-10-06 20:57:42,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464785630] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:42,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:42,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 20:57:42,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490949205] [2021-10-06 20:57:42,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:57:42,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:42,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:57:42,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:42,125 INFO L87 Difference]: Start difference. First operand 110 states and 307 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:42,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:42,807 INFO L93 Difference]: Finished difference Result 180 states and 458 transitions. [2021-10-06 20:57:42,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 20:57:42,808 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:42,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:42,810 INFO L225 Difference]: With dead ends: 180 [2021-10-06 20:57:42,810 INFO L226 Difference]: Without dead ends: 176 [2021-10-06 20:57:42,810 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 361.9ms TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2021-10-06 20:57:42,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-06 20:57:42,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 124. [2021-10-06 20:57:42,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.861788617886179) internal successors, (352), 123 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:42,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 352 transitions. [2021-10-06 20:57:42,816 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 352 transitions. Word has length 16 [2021-10-06 20:57:42,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:42,816 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 352 transitions. [2021-10-06 20:57:42,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:42,816 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 352 transitions. [2021-10-06 20:57:42,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:42,817 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:42,817 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:42,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:43,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:43,029 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:43,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:43,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1755133598, now seen corresponding path program 15 times [2021-10-06 20:57:43,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:43,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169785582] [2021-10-06 20:57:43,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:57:43,031 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:43,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:43,033 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:43,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-06 20:57:43,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 20:57:43,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:43,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:57:43,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:43,445 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:43,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:43,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:43,686 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:43,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169785582] [2021-10-06 20:57:43,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169785582] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:43,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:43,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 20:57:43,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649642215] [2021-10-06 20:57:43,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:57:43,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:43,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:57:43,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:57:43,688 INFO L87 Difference]: Start difference. First operand 124 states and 352 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:44,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:44,898 INFO L93 Difference]: Finished difference Result 198 states and 490 transitions. [2021-10-06 20:57:44,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-06 20:57:44,898 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:44,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:44,900 INFO L225 Difference]: With dead ends: 198 [2021-10-06 20:57:44,900 INFO L226 Difference]: Without dead ends: 198 [2021-10-06 20:57:44,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 820.3ms TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-10-06 20:57:44,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-06 20:57:44,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 130. [2021-10-06 20:57:44,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 2.891472868217054) internal successors, (373), 129 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:44,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 373 transitions. [2021-10-06 20:57:44,907 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 373 transitions. Word has length 16 [2021-10-06 20:57:44,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:44,907 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 373 transitions. [2021-10-06 20:57:44,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:44,908 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 373 transitions. [2021-10-06 20:57:44,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:44,908 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:44,908 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:44,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-10-06 20:57:45,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:45,117 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:45,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:45,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1730487072, now seen corresponding path program 16 times [2021-10-06 20:57:45,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:45,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863222474] [2021-10-06 20:57:45,118 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:57:45,119 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:45,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:45,120 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:45,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-06 20:57:45,359 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:57:45,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:45,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:57:45,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:45,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:45,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:45,640 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:45,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863222474] [2021-10-06 20:57:45,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863222474] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:45,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:45,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 20:57:45,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172144851] [2021-10-06 20:57:45,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:57:45,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:45,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:57:45,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:45,642 INFO L87 Difference]: Start difference. First operand 130 states and 373 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:46,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:46,425 INFO L93 Difference]: Finished difference Result 234 states and 595 transitions. [2021-10-06 20:57:46,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:57:46,425 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:46,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:46,427 INFO L225 Difference]: With dead ends: 234 [2021-10-06 20:57:46,427 INFO L226 Difference]: Without dead ends: 228 [2021-10-06 20:57:46,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 500.0ms TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-10-06 20:57:46,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-06 20:57:46,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 134. [2021-10-06 20:57:46,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.9097744360902253) internal successors, (387), 133 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:46,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 387 transitions. [2021-10-06 20:57:46,435 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 387 transitions. Word has length 16 [2021-10-06 20:57:46,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:46,436 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 387 transitions. [2021-10-06 20:57:46,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:46,436 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 387 transitions. [2021-10-06 20:57:46,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:46,437 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:46,437 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:46,449 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-10-06 20:57:46,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:46,649 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:46,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:46,650 INFO L82 PathProgramCache]: Analyzing trace with hash 13927304, now seen corresponding path program 17 times [2021-10-06 20:57:46,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:46,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230248255] [2021-10-06 20:57:46,651 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:57:46,651 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:46,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:46,652 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:46,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-06 20:57:46,917 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 20:57:46,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:46,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:57:46,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:47,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:47,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:47,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:47,276 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:47,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230248255] [2021-10-06 20:57:47,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230248255] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:47,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:47,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 20:57:47,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815882096] [2021-10-06 20:57:47,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:57:47,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:47,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:57:47,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:47,278 INFO L87 Difference]: Start difference. First operand 134 states and 387 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:48,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:48,337 INFO L93 Difference]: Finished difference Result 256 states and 638 transitions. [2021-10-06 20:57:48,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 20:57:48,338 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:48,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:48,342 INFO L225 Difference]: With dead ends: 256 [2021-10-06 20:57:48,343 INFO L226 Difference]: Without dead ends: 256 [2021-10-06 20:57:48,344 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 710.6ms TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-10-06 20:57:48,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-06 20:57:48,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 144. [2021-10-06 20:57:48,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.979020979020979) internal successors, (426), 143 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:48,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 426 transitions. [2021-10-06 20:57:48,351 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 426 transitions. Word has length 16 [2021-10-06 20:57:48,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:48,351 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 426 transitions. [2021-10-06 20:57:48,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:48,351 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 426 transitions. [2021-10-06 20:57:48,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:48,352 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:48,352 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:48,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2021-10-06 20:57:48,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:48,565 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:48,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:48,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1440831366, now seen corresponding path program 18 times [2021-10-06 20:57:48,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:48,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110547680] [2021-10-06 20:57:48,567 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:57:48,567 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:48,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:48,569 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:48,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-06 20:57:48,856 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 20:57:48,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:48,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:57:48,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:48,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:49,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:49,124 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:49,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110547680] [2021-10-06 20:57:49,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110547680] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:49,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:49,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 20:57:49,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576871020] [2021-10-06 20:57:49,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:57:49,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:49,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:57:49,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:49,126 INFO L87 Difference]: Start difference. First operand 144 states and 426 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:49,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:49,769 INFO L93 Difference]: Finished difference Result 186 states and 498 transitions. [2021-10-06 20:57:49,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 20:57:49,770 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:49,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:49,771 INFO L225 Difference]: With dead ends: 186 [2021-10-06 20:57:49,771 INFO L226 Difference]: Without dead ends: 178 [2021-10-06 20:57:49,771 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 389.7ms TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2021-10-06 20:57:49,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-06 20:57:49,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2021-10-06 20:57:49,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.9084967320261437) internal successors, (445), 153 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:49,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 445 transitions. [2021-10-06 20:57:49,777 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 445 transitions. Word has length 16 [2021-10-06 20:57:49,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:49,777 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 445 transitions. [2021-10-06 20:57:49,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:49,778 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 445 transitions. [2021-10-06 20:57:49,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:49,779 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:49,779 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:49,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:49,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:49,992 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:49,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:49,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1075075228, now seen corresponding path program 19 times [2021-10-06 20:57:49,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:49,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952586883] [2021-10-06 20:57:49,994 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:57:49,995 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:49,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:49,996 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:49,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-06 20:57:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:50,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:57:50,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:50,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:50,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:50,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:50,606 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:50,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952586883] [2021-10-06 20:57:50,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952586883] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:50,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:50,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 20:57:50,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360303482] [2021-10-06 20:57:50,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:57:50,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:50,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:57:50,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:50,609 INFO L87 Difference]: Start difference. First operand 154 states and 445 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:51,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:51,291 INFO L93 Difference]: Finished difference Result 200 states and 548 transitions. [2021-10-06 20:57:51,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 20:57:51,292 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:51,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:51,293 INFO L225 Difference]: With dead ends: 200 [2021-10-06 20:57:51,293 INFO L226 Difference]: Without dead ends: 194 [2021-10-06 20:57:51,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 518.0ms TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2021-10-06 20:57:51,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-06 20:57:51,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 154. [2021-10-06 20:57:51,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.8823529411764706) internal successors, (441), 153 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:51,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 441 transitions. [2021-10-06 20:57:51,302 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 441 transitions. Word has length 16 [2021-10-06 20:57:51,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:51,302 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 441 transitions. [2021-10-06 20:57:51,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:51,303 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 441 transitions. [2021-10-06 20:57:51,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:51,303 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:51,304 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:51,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:51,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:51,517 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:51,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:51,518 INFO L82 PathProgramCache]: Analyzing trace with hash -271675062, now seen corresponding path program 20 times [2021-10-06 20:57:51,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:51,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624356273] [2021-10-06 20:57:51,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:57:51,520 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:51,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:51,521 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:51,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-06 20:57:51,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:57:51,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:51,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:57:51,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:51,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:51,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:52,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:52,119 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:52,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624356273] [2021-10-06 20:57:52,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624356273] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:52,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:52,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 20:57:52,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911199187] [2021-10-06 20:57:52,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:57:52,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:52,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:57:52,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:52,121 INFO L87 Difference]: Start difference. First operand 154 states and 441 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:52,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:52,496 INFO L93 Difference]: Finished difference Result 236 states and 611 transitions. [2021-10-06 20:57:52,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 20:57:52,497 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:52,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:52,498 INFO L225 Difference]: With dead ends: 236 [2021-10-06 20:57:52,498 INFO L226 Difference]: Without dead ends: 236 [2021-10-06 20:57:52,499 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 263.1ms TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-10-06 20:57:52,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-06 20:57:52,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 160. [2021-10-06 20:57:52,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 2.930817610062893) internal successors, (466), 159 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:52,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 466 transitions. [2021-10-06 20:57:52,505 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 466 transitions. Word has length 16 [2021-10-06 20:57:52,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:52,505 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 466 transitions. [2021-10-06 20:57:52,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:52,506 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 466 transitions. [2021-10-06 20:57:52,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:52,506 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:52,506 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:52,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:52,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:52,720 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:52,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:52,721 INFO L82 PathProgramCache]: Analyzing trace with hash -168519836, now seen corresponding path program 21 times [2021-10-06 20:57:52,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:52,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709583096] [2021-10-06 20:57:52,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:57:52,722 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:52,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:52,723 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:52,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-06 20:57:53,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 20:57:53,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:53,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:57:53,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:53,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:53,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:53,453 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:53,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709583096] [2021-10-06 20:57:53,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709583096] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:53,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:53,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 20:57:53,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556722293] [2021-10-06 20:57:53,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:57:53,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:53,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:57:53,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:57:53,455 INFO L87 Difference]: Start difference. First operand 160 states and 466 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:54,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:54,688 INFO L93 Difference]: Finished difference Result 272 states and 714 transitions. [2021-10-06 20:57:54,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 20:57:54,689 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:54,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:54,691 INFO L225 Difference]: With dead ends: 272 [2021-10-06 20:57:54,692 INFO L226 Difference]: Without dead ends: 272 [2021-10-06 20:57:54,692 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 964.6ms TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2021-10-06 20:57:54,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-06 20:57:54,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 164. [2021-10-06 20:57:54,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 2.9447852760736195) internal successors, (480), 163 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:54,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 480 transitions. [2021-10-06 20:57:54,699 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 480 transitions. Word has length 16 [2021-10-06 20:57:54,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:54,699 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 480 transitions. [2021-10-06 20:57:54,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:54,700 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 480 transitions. [2021-10-06 20:57:54,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:54,700 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:54,700 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:54,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-10-06 20:57:54,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:54,909 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:54,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:54,909 INFO L82 PathProgramCache]: Analyzing trace with hash -887364738, now seen corresponding path program 22 times [2021-10-06 20:57:54,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:54,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36684632] [2021-10-06 20:57:54,911 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:57:54,911 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:54,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:54,912 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:54,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-06 20:57:55,183 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:57:55,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:55,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:57:55,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:55,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:55,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:55,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:55,408 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:55,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36684632] [2021-10-06 20:57:55,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36684632] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:55,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:55,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 20:57:55,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516292549] [2021-10-06 20:57:55,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:57:55,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:55,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:57:55,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:55,410 INFO L87 Difference]: Start difference. First operand 164 states and 480 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:55,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:55,735 INFO L93 Difference]: Finished difference Result 206 states and 569 transitions. [2021-10-06 20:57:55,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 20:57:55,736 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:55,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:55,738 INFO L225 Difference]: With dead ends: 206 [2021-10-06 20:57:55,738 INFO L226 Difference]: Without dead ends: 200 [2021-10-06 20:57:55,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 245.7ms TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-10-06 20:57:55,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-06 20:57:55,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 162. [2021-10-06 20:57:55,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.950310559006211) internal successors, (475), 161 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:55,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 475 transitions. [2021-10-06 20:57:55,748 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 475 transitions. Word has length 16 [2021-10-06 20:57:55,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:55,748 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 475 transitions. [2021-10-06 20:57:55,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:55,750 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 475 transitions. [2021-10-06 20:57:55,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:55,750 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:55,751 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:55,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:55,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:55,964 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:55,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:55,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1920198154, now seen corresponding path program 23 times [2021-10-06 20:57:55,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:55,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591146546] [2021-10-06 20:57:55,966 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:57:55,966 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:55,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:55,968 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:55,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-06 20:57:56,273 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:57:56,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:56,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:57:56,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:56,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:56,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:56,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:56,603 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:56,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1591146546] [2021-10-06 20:57:56,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1591146546] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:56,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:56,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 20:57:56,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851135075] [2021-10-06 20:57:56,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:57:56,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:56,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:57:56,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:57:56,606 INFO L87 Difference]: Start difference. First operand 162 states and 475 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:57,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:57,215 INFO L93 Difference]: Finished difference Result 266 states and 723 transitions. [2021-10-06 20:57:57,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:57:57,216 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:57,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:57,217 INFO L225 Difference]: With dead ends: 266 [2021-10-06 20:57:57,217 INFO L226 Difference]: Without dead ends: 266 [2021-10-06 20:57:57,218 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 492.0ms TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:57:57,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-10-06 20:57:57,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 162. [2021-10-06 20:57:57,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.950310559006211) internal successors, (475), 161 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:57,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 475 transitions. [2021-10-06 20:57:57,225 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 475 transitions. Word has length 16 [2021-10-06 20:57:57,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:57,225 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 475 transitions. [2021-10-06 20:57:57,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:57,226 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 475 transitions. [2021-10-06 20:57:57,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:57,226 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:57,227 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:57,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:57,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:57,440 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:57,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:57,440 INFO L82 PathProgramCache]: Analyzing trace with hash 167608140, now seen corresponding path program 24 times [2021-10-06 20:57:57,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:57,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105106731] [2021-10-06 20:57:57,441 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:57:57,441 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:57,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:57,442 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:57,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-06 20:57:57,776 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 20:57:57,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:57,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:57:57,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:57,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:58,018 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:58,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105106731] [2021-10-06 20:57:58,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105106731] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:58,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:58,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 20:57:58,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003276860] [2021-10-06 20:57:58,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:57:58,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:58,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:57:58,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:58,021 INFO L87 Difference]: Start difference. First operand 162 states and 475 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:58,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:58,552 INFO L93 Difference]: Finished difference Result 236 states and 619 transitions. [2021-10-06 20:57:58,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:57:58,553 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:58,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:58,554 INFO L225 Difference]: With dead ends: 236 [2021-10-06 20:57:58,555 INFO L226 Difference]: Without dead ends: 232 [2021-10-06 20:57:58,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 347.8ms TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-10-06 20:57:58,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-10-06 20:57:58,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 166. [2021-10-06 20:57:58,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.9515151515151516) internal successors, (487), 165 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:58,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 487 transitions. [2021-10-06 20:57:58,561 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 487 transitions. Word has length 16 [2021-10-06 20:57:58,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:58,561 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 487 transitions. [2021-10-06 20:57:58,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:58,562 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 487 transitions. [2021-10-06 20:57:58,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:58,569 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:58,569 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:58,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:58,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:58,783 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:58,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:58,783 INFO L82 PathProgramCache]: Analyzing trace with hash -696790490, now seen corresponding path program 25 times [2021-10-06 20:57:58,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:58,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813055991] [2021-10-06 20:57:58,785 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:57:58,785 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:58,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:58,786 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:58,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-06 20:57:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:59,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:57:59,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:59,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:59,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:59,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:59,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:59,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813055991] [2021-10-06 20:57:59,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813055991] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:59,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:59,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 20:57:59,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505344078] [2021-10-06 20:57:59,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:57:59,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:59,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:57:59,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:57:59,473 INFO L87 Difference]: Start difference. First operand 166 states and 487 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:00,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:00,621 INFO L93 Difference]: Finished difference Result 260 states and 680 transitions. [2021-10-06 20:58:00,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 20:58:00,622 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:58:00,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:00,624 INFO L225 Difference]: With dead ends: 260 [2021-10-06 20:58:00,624 INFO L226 Difference]: Without dead ends: 260 [2021-10-06 20:58:00,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 988.2ms TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:58:00,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-10-06 20:58:00,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 172. [2021-10-06 20:58:00,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.9707602339181287) internal successors, (508), 171 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:00,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 508 transitions. [2021-10-06 20:58:00,631 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 508 transitions. Word has length 16 [2021-10-06 20:58:00,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:00,631 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 508 transitions. [2021-10-06 20:58:00,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:00,632 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 508 transitions. [2021-10-06 20:58:00,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:58:00,633 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:00,633 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:00,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:00,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:00,847 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:00,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:00,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1506137116, now seen corresponding path program 26 times [2021-10-06 20:58:00,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:00,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612415270] [2021-10-06 20:58:00,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:58:00,849 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:00,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:00,850 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:00,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-06 20:58:01,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:58:01,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:01,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:58:01,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:01,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:01,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:01,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:01,444 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:01,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612415270] [2021-10-06 20:58:01,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612415270] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:01,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:01,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 20:58:01,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452063175] [2021-10-06 20:58:01,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:58:01,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:01,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:58:01,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:58:01,446 INFO L87 Difference]: Start difference. First operand 172 states and 508 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:02,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:02,061 INFO L93 Difference]: Finished difference Result 266 states and 698 transitions. [2021-10-06 20:58:02,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 20:58:02,062 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:58:02,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:02,064 INFO L225 Difference]: With dead ends: 266 [2021-10-06 20:58:02,064 INFO L226 Difference]: Without dead ends: 260 [2021-10-06 20:58:02,064 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 396.9ms TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2021-10-06 20:58:02,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-10-06 20:58:02,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 172. [2021-10-06 20:58:02,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.9707602339181287) internal successors, (508), 171 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:02,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 508 transitions. [2021-10-06 20:58:02,072 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 508 transitions. Word has length 16 [2021-10-06 20:58:02,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:02,072 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 508 transitions. [2021-10-06 20:58:02,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:02,073 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 508 transitions. [2021-10-06 20:58:02,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:58:02,074 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:02,074 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:02,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:02,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:02,277 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:02,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:02,278 INFO L82 PathProgramCache]: Analyzing trace with hash -702736950, now seen corresponding path program 27 times [2021-10-06 20:58:02,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:02,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991307021] [2021-10-06 20:58:02,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:58:02,279 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:02,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:02,280 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:02,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-06 20:58:02,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 20:58:02,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:02,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:58:02,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:02,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:02,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:03,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:03,000 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:03,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991307021] [2021-10-06 20:58:03,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991307021] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:03,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:03,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 20:58:03,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884263963] [2021-10-06 20:58:03,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:58:03,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:03,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:58:03,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:58:03,002 INFO L87 Difference]: Start difference. First operand 172 states and 508 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:04,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:04,185 INFO L93 Difference]: Finished difference Result 296 states and 783 transitions. [2021-10-06 20:58:04,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 20:58:04,186 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:58:04,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:04,188 INFO L225 Difference]: With dead ends: 296 [2021-10-06 20:58:04,188 INFO L226 Difference]: Without dead ends: 294 [2021-10-06 20:58:04,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 904.0ms TimeCoverageRelationStatistics Valid=184, Invalid=466, Unknown=0, NotChecked=0, Total=650 [2021-10-06 20:58:04,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-10-06 20:58:04,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 182. [2021-10-06 20:58:04,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 3.022099447513812) internal successors, (547), 181 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:04,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 547 transitions. [2021-10-06 20:58:04,195 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 547 transitions. Word has length 16 [2021-10-06 20:58:04,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:04,196 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 547 transitions. [2021-10-06 20:58:04,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:04,196 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 547 transitions. [2021-10-06 20:58:04,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:58:04,197 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:04,197 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:04,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:04,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:04,409 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:04,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:04,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1127681672, now seen corresponding path program 28 times [2021-10-06 20:58:04,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:04,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380140856] [2021-10-06 20:58:04,411 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:58:04,412 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:04,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:04,413 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:04,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-06 20:58:04,760 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:58:04,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:04,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:58:04,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:04,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:05,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:05,119 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:05,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380140856] [2021-10-06 20:58:05,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380140856] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:05,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:05,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 20:58:05,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136942069] [2021-10-06 20:58:05,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:58:05,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:05,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:58:05,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:58:05,121 INFO L87 Difference]: Start difference. First operand 182 states and 547 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:06,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:06,410 INFO L93 Difference]: Finished difference Result 440 states and 1113 transitions. [2021-10-06 20:58:06,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 20:58:06,411 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:58:06,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:06,414 INFO L225 Difference]: With dead ends: 440 [2021-10-06 20:58:06,414 INFO L226 Difference]: Without dead ends: 440 [2021-10-06 20:58:06,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 967.8ms TimeCoverageRelationStatistics Valid=224, Invalid=706, Unknown=0, NotChecked=0, Total=930 [2021-10-06 20:58:06,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-10-06 20:58:06,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 198. [2021-10-06 20:58:06,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 3.1015228426395938) internal successors, (611), 197 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:06,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 611 transitions. [2021-10-06 20:58:06,421 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 611 transitions. Word has length 16 [2021-10-06 20:58:06,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:06,422 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 611 transitions. [2021-10-06 20:58:06,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:06,422 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 611 transitions. [2021-10-06 20:58:06,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:58:06,423 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:06,423 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:06,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:06,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:06,632 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:06,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:06,633 INFO L82 PathProgramCache]: Analyzing trace with hash -409634078, now seen corresponding path program 29 times [2021-10-06 20:58:06,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:06,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49220657] [2021-10-06 20:58:06,634 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:58:06,634 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:06,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:06,635 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:06,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-06 20:58:06,941 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:58:06,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:06,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:58:06,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:07,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:07,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:07,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:07,222 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:07,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49220657] [2021-10-06 20:58:07,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49220657] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:07,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:07,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 20:58:07,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083368282] [2021-10-06 20:58:07,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:58:07,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:07,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:58:07,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:58:07,224 INFO L87 Difference]: Start difference. First operand 198 states and 611 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:08,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:08,014 INFO L93 Difference]: Finished difference Result 244 states and 696 transitions. [2021-10-06 20:58:08,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 20:58:08,015 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:58:08,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:08,017 INFO L225 Difference]: With dead ends: 244 [2021-10-06 20:58:08,017 INFO L226 Difference]: Without dead ends: 240 [2021-10-06 20:58:08,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 530.0ms TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2021-10-06 20:58:08,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-10-06 20:58:08,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 200. [2021-10-06 20:58:08,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 3.0954773869346734) internal successors, (616), 199 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:08,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 616 transitions. [2021-10-06 20:58:08,024 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 616 transitions. Word has length 16 [2021-10-06 20:58:08,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:08,024 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 616 transitions. [2021-10-06 20:58:08,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:08,024 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 616 transitions. [2021-10-06 20:58:08,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:58:08,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:08,025 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:08,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:08,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:08,239 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:08,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:08,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1274032708, now seen corresponding path program 30 times [2021-10-06 20:58:08,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:08,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35688431] [2021-10-06 20:58:08,241 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:58:08,241 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:08,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:08,242 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:08,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-06 20:58:08,598 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 20:58:08,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:08,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:58:08,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:08,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:08,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:09,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:09,030 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:09,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35688431] [2021-10-06 20:58:09,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35688431] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:09,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:09,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 20:58:09,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169514399] [2021-10-06 20:58:09,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:58:09,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:09,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:58:09,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:58:09,033 INFO L87 Difference]: Start difference. First operand 200 states and 616 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:10,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:10,219 INFO L93 Difference]: Finished difference Result 296 states and 809 transitions. [2021-10-06 20:58:10,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 20:58:10,220 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:58:10,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:10,221 INFO L225 Difference]: With dead ends: 296 [2021-10-06 20:58:10,221 INFO L226 Difference]: Without dead ends: 296 [2021-10-06 20:58:10,222 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1000.9ms TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2021-10-06 20:58:10,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-10-06 20:58:10,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 200. [2021-10-06 20:58:10,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 3.0954773869346734) internal successors, (616), 199 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:10,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 616 transitions. [2021-10-06 20:58:10,229 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 616 transitions. Word has length 16 [2021-10-06 20:58:10,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:10,229 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 616 transitions. [2021-10-06 20:58:10,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:10,230 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 616 transitions. [2021-10-06 20:58:10,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:58:10,231 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:10,231 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:10,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:10,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:10,444 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:10,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:10,445 INFO L82 PathProgramCache]: Analyzing trace with hash -2083379334, now seen corresponding path program 31 times [2021-10-06 20:58:10,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:10,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538537876] [2021-10-06 20:58:10,446 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:58:10,446 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:10,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:10,447 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:10,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-06 20:58:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:10,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:58:10,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:10,872 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:10,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:11,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:11,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:11,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538537876] [2021-10-06 20:58:11,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538537876] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:11,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:11,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 20:58:11,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113904420] [2021-10-06 20:58:11,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:58:11,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:11,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:58:11,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:58:11,058 INFO L87 Difference]: Start difference. First operand 200 states and 616 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:11,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:11,799 INFO L93 Difference]: Finished difference Result 278 states and 781 transitions. [2021-10-06 20:58:11,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 20:58:11,800 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:58:11,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:11,801 INFO L225 Difference]: With dead ends: 278 [2021-10-06 20:58:11,801 INFO L226 Difference]: Without dead ends: 272 [2021-10-06 20:58:11,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 554.9ms TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-10-06 20:58:11,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-06 20:58:11,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 204. [2021-10-06 20:58:11,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 3.103448275862069) internal successors, (630), 203 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:11,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 630 transitions. [2021-10-06 20:58:11,808 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 630 transitions. Word has length 16 [2021-10-06 20:58:11,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:11,809 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 630 transitions. [2021-10-06 20:58:11,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:11,809 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 630 transitions. [2021-10-06 20:58:11,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:58:11,810 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:11,810 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:11,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2021-10-06 20:58:12,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:12,012 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:12,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:12,013 INFO L82 PathProgramCache]: Analyzing trace with hash 495028194, now seen corresponding path program 32 times [2021-10-06 20:58:12,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:12,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284552278] [2021-10-06 20:58:12,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:58:12,015 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:12,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:12,016 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:12,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-06 20:58:12,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:58:12,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:12,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:58:12,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:12,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:12,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:12,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:12,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:12,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284552278] [2021-10-06 20:58:12,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284552278] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:12,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:12,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 20:58:12,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203061323] [2021-10-06 20:58:12,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:58:12,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:12,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:58:12,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:58:12,674 INFO L87 Difference]: Start difference. First operand 204 states and 630 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:13,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:13,040 INFO L93 Difference]: Finished difference Result 312 states and 837 transitions. [2021-10-06 20:58:13,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 20:58:13,041 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:58:13,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:13,043 INFO L225 Difference]: With dead ends: 312 [2021-10-06 20:58:13,043 INFO L226 Difference]: Without dead ends: 312 [2021-10-06 20:58:13,043 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 266.2ms TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-10-06 20:58:13,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-10-06 20:58:13,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 206. [2021-10-06 20:58:13,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 3.107317073170732) internal successors, (637), 205 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:13,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 637 transitions. [2021-10-06 20:58:13,050 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 637 transitions. Word has length 16 [2021-10-06 20:58:13,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:13,050 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 637 transitions. [2021-10-06 20:58:13,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:13,050 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 637 transitions. [2021-10-06 20:58:13,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:58:13,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:13,051 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:13,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2021-10-06 20:58:13,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:13,260 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:13,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:13,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1921932256, now seen corresponding path program 33 times [2021-10-06 20:58:13,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:13,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682395742] [2021-10-06 20:58:13,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:58:13,263 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:13,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:13,264 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:13,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-06 20:58:13,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 20:58:13,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:13,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:58:13,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:13,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:13,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:13,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:13,907 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:13,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682395742] [2021-10-06 20:58:13,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682395742] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:13,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:13,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 20:58:13,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055013755] [2021-10-06 20:58:13,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:58:13,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:13,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:58:13,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:58:13,909 INFO L87 Difference]: Start difference. First operand 206 states and 637 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:14,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:14,641 INFO L93 Difference]: Finished difference Result 276 states and 777 transitions. [2021-10-06 20:58:14,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 20:58:14,643 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:58:14,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:14,644 INFO L225 Difference]: With dead ends: 276 [2021-10-06 20:58:14,644 INFO L226 Difference]: Without dead ends: 268 [2021-10-06 20:58:14,645 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 378.5ms TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2021-10-06 20:58:14,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-10-06 20:58:14,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 208. [2021-10-06 20:58:14,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 3.101449275362319) internal successors, (642), 207 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:14,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 642 transitions. [2021-10-06 20:58:14,651 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 642 transitions. Word has length 16 [2021-10-06 20:58:14,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:14,651 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 642 transitions. [2021-10-06 20:58:14,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:14,652 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 642 transitions. [2021-10-06 20:58:14,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:58:14,652 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:14,653 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:14,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:14,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:14,860 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:14,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:14,861 INFO L82 PathProgramCache]: Analyzing trace with hash -593974338, now seen corresponding path program 34 times [2021-10-06 20:58:14,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:14,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244836242] [2021-10-06 20:58:14,862 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:58:14,863 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:14,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:14,864 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:14,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-06 20:58:15,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:58:15,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:15,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:58:15,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:15,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:15,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:15,561 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:15,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244836242] [2021-10-06 20:58:15,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244836242] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:15,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:15,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 20:58:15,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895111823] [2021-10-06 20:58:15,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:58:15,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:15,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:58:15,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:58:15,563 INFO L87 Difference]: Start difference. First operand 208 states and 642 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:16,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:16,237 INFO L93 Difference]: Finished difference Result 250 states and 723 transitions. [2021-10-06 20:58:16,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-06 20:58:16,238 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:58:16,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:16,240 INFO L225 Difference]: With dead ends: 250 [2021-10-06 20:58:16,240 INFO L226 Difference]: Without dead ends: 244 [2021-10-06 20:58:16,241 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 440.8ms TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-10-06 20:58:16,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-10-06 20:58:16,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 210. [2021-10-06 20:58:16,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 3.0861244019138754) internal successors, (645), 209 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:16,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 645 transitions. [2021-10-06 20:58:16,247 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 645 transitions. Word has length 16 [2021-10-06 20:58:16,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:16,247 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 645 transitions. [2021-10-06 20:58:16,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:16,247 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 645 transitions. [2021-10-06 20:58:16,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:58:16,248 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:16,248 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:16,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:16,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:16,462 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:16,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:16,463 INFO L82 PathProgramCache]: Analyzing trace with hash 209425828, now seen corresponding path program 35 times [2021-10-06 20:58:16,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:16,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819699757] [2021-10-06 20:58:16,463 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:58:16,464 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:16,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:16,465 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:16,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-06 20:58:16,858 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 20:58:16,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:16,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:58:16,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:16,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:16,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:17,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:17,322 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:17,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819699757] [2021-10-06 20:58:17,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819699757] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:17,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:17,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 20:58:17,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013473005] [2021-10-06 20:58:17,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:58:17,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:17,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:58:17,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:58:17,323 INFO L87 Difference]: Start difference. First operand 210 states and 645 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:18,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:18,756 INFO L93 Difference]: Finished difference Result 350 states and 950 transitions. [2021-10-06 20:58:18,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 20:58:18,758 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:58:18,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:18,762 INFO L225 Difference]: With dead ends: 350 [2021-10-06 20:58:18,763 INFO L226 Difference]: Without dead ends: 348 [2021-10-06 20:58:18,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1094.1ms TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2021-10-06 20:58:18,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-10-06 20:58:18,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 236. [2021-10-06 20:58:18,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 3.174468085106383) internal successors, (746), 235 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:18,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 746 transitions. [2021-10-06 20:58:18,772 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 746 transitions. Word has length 16 [2021-10-06 20:58:18,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:18,772 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 746 transitions. [2021-10-06 20:58:18,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:18,772 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 746 transitions. [2021-10-06 20:58:18,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:58:18,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:18,773 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:18,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:18,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:18,987 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:18,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:18,988 INFO L82 PathProgramCache]: Analyzing trace with hash 312581054, now seen corresponding path program 36 times [2021-10-06 20:58:18,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:18,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933936351] [2021-10-06 20:58:18,989 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:58:18,989 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:18,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:18,991 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:18,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-06 20:58:19,353 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 20:58:19,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:19,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:58:19,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:19,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:19,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:19,799 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:19,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933936351] [2021-10-06 20:58:19,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933936351] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:19,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:19,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 20:58:19,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978319618] [2021-10-06 20:58:19,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:58:19,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:19,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:58:19,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:58:19,801 INFO L87 Difference]: Start difference. First operand 236 states and 746 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:21,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:21,051 INFO L93 Difference]: Finished difference Result 314 states and 897 transitions. [2021-10-06 20:58:21,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-06 20:58:21,052 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:58:21,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:21,054 INFO L225 Difference]: With dead ends: 314 [2021-10-06 20:58:21,054 INFO L226 Difference]: Without dead ends: 314 [2021-10-06 20:58:21,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 918.2ms TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-10-06 20:58:21,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-06 20:58:21,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 236. [2021-10-06 20:58:21,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 3.174468085106383) internal successors, (746), 235 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:21,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 746 transitions. [2021-10-06 20:58:21,060 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 746 transitions. Word has length 16 [2021-10-06 20:58:21,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:21,061 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 746 transitions. [2021-10-06 20:58:21,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:21,061 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 746 transitions. [2021-10-06 20:58:21,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:58:21,062 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:21,062 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:21,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:21,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:21,275 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:21,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:21,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1391635759, now seen corresponding path program 37 times [2021-10-06 20:58:21,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:21,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54295765] [2021-10-06 20:58:21,277 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:58:21,277 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:21,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:21,279 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:21,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-06 20:58:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:22,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 20:58:22,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:22,742 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:22,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:23,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:23,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:23,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54295765] [2021-10-06 20:58:23,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54295765] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:23,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:23,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 20:58:23,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547028791] [2021-10-06 20:58:23,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 20:58:23,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:23,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 20:58:23,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-06 20:58:23,748 INFO L87 Difference]: Start difference. First operand 236 states and 746 transitions. Second operand has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:26,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:26,004 INFO L93 Difference]: Finished difference Result 350 states and 996 transitions. [2021-10-06 20:58:26,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 20:58:26,004 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 20:58:26,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:26,006 INFO L225 Difference]: With dead ends: 350 [2021-10-06 20:58:26,007 INFO L226 Difference]: Without dead ends: 332 [2021-10-06 20:58:26,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1461.0ms TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-10-06 20:58:26,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-10-06 20:58:26,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 276. [2021-10-06 20:58:26,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 3.1963636363636363) internal successors, (879), 275 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:26,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 879 transitions. [2021-10-06 20:58:26,015 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 879 transitions. Word has length 17 [2021-10-06 20:58:26,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:26,015 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 879 transitions. [2021-10-06 20:58:26,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:26,016 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 879 transitions. [2021-10-06 20:58:26,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:58:26,017 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:26,017 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:26,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:26,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:26,231 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:26,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:26,232 INFO L82 PathProgramCache]: Analyzing trace with hash -569870167, now seen corresponding path program 38 times [2021-10-06 20:58:26,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:26,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053484625] [2021-10-06 20:58:26,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:58:26,233 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:26,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:26,235 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:26,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-06 20:58:26,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:58:26,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:26,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 20:58:26,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:27,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:27,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:29,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:29,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:29,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053484625] [2021-10-06 20:58:29,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053484625] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:29,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:29,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:29,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519545445] [2021-10-06 20:58:29,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:29,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:29,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:29,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:29,478 INFO L87 Difference]: Start difference. First operand 276 states and 879 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:31,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:31,848 INFO L93 Difference]: Finished difference Result 363 states and 1033 transitions. [2021-10-06 20:58:31,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 20:58:31,848 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 20:58:31,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:31,850 INFO L225 Difference]: With dead ends: 363 [2021-10-06 20:58:31,850 INFO L226 Difference]: Without dead ends: 358 [2021-10-06 20:58:31,851 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2714.8ms TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-10-06 20:58:31,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-06 20:58:31,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 284. [2021-10-06 20:58:31,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 3.2190812720848054) internal successors, (911), 283 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:31,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 911 transitions. [2021-10-06 20:58:31,862 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 911 transitions. Word has length 17 [2021-10-06 20:58:31,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:31,862 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 911 transitions. [2021-10-06 20:58:31,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:31,863 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 911 transitions. [2021-10-06 20:58:31,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:58:31,864 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:31,864 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:31,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:32,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:32,079 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:32,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:32,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1482372019, now seen corresponding path program 39 times [2021-10-06 20:58:32,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:32,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823591017] [2021-10-06 20:58:32,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:58:32,080 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:32,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:32,082 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:32,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-06 20:58:32,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 20:58:32,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:32,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 20:58:32,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:33,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:33,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:35,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:35,057 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:35,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823591017] [2021-10-06 20:58:35,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823591017] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:35,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:35,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:35,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605021628] [2021-10-06 20:58:35,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:35,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:35,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:35,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:35,060 INFO L87 Difference]: Start difference. First operand 284 states and 911 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:36,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:36,662 INFO L93 Difference]: Finished difference Result 362 states and 1035 transitions. [2021-10-06 20:58:36,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 20:58:36,663 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 20:58:36,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:36,666 INFO L225 Difference]: With dead ends: 362 [2021-10-06 20:58:36,666 INFO L226 Difference]: Without dead ends: 350 [2021-10-06 20:58:36,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2323.4ms TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-06 20:58:36,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-10-06 20:58:36,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 286. [2021-10-06 20:58:36,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 3.2070175438596493) internal successors, (914), 285 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:36,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 914 transitions. [2021-10-06 20:58:36,674 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 914 transitions. Word has length 17 [2021-10-06 20:58:36,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:36,675 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 914 transitions. [2021-10-06 20:58:36,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:36,675 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 914 transitions. [2021-10-06 20:58:36,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:58:36,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:36,676 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:36,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:36,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:36,882 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:36,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:36,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1426960759, now seen corresponding path program 40 times [2021-10-06 20:58:36,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:36,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149936972] [2021-10-06 20:58:36,883 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:58:36,883 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:36,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:36,885 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:36,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-06 20:58:37,604 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:58:37,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:37,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 20:58:37,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:38,156 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:38,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:39,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:39,790 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:39,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149936972] [2021-10-06 20:58:39,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149936972] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:39,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:39,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:39,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742841657] [2021-10-06 20:58:39,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:39,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:39,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:39,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:39,792 INFO L87 Difference]: Start difference. First operand 286 states and 914 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:41,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:41,747 INFO L93 Difference]: Finished difference Result 353 states and 1020 transitions. [2021-10-06 20:58:41,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 20:58:41,747 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 20:58:41,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:41,749 INFO L225 Difference]: With dead ends: 353 [2021-10-06 20:58:41,750 INFO L226 Difference]: Without dead ends: 348 [2021-10-06 20:58:41,750 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2135.0ms TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-10-06 20:58:41,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-10-06 20:58:41,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 286. [2021-10-06 20:58:41,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 3.2070175438596493) internal successors, (914), 285 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:41,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 914 transitions. [2021-10-06 20:58:41,757 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 914 transitions. Word has length 17 [2021-10-06 20:58:41,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:41,757 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 914 transitions. [2021-10-06 20:58:41,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:41,758 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 914 transitions. [2021-10-06 20:58:41,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:58:41,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:41,759 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:41,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2021-10-06 20:58:41,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:41,973 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:41,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:41,974 INFO L82 PathProgramCache]: Analyzing trace with hash -595782837, now seen corresponding path program 41 times [2021-10-06 20:58:41,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:41,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769623183] [2021-10-06 20:58:41,975 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:58:41,975 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:41,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:41,976 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:41,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-06 20:58:44,150 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 20:58:44,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:44,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 20:58:44,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:44,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:44,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:45,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:45,804 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:45,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769623183] [2021-10-06 20:58:45,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769623183] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:45,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:45,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-10-06 20:58:45,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852471709] [2021-10-06 20:58:45,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 20:58:45,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:45,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 20:58:45,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-06 20:58:45,807 INFO L87 Difference]: Start difference. First operand 286 states and 914 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:47,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:47,353 INFO L93 Difference]: Finished difference Result 337 states and 1011 transitions. [2021-10-06 20:58:47,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 20:58:47,354 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 20:58:47,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:47,356 INFO L225 Difference]: With dead ends: 337 [2021-10-06 20:58:47,356 INFO L226 Difference]: Without dead ends: 332 [2021-10-06 20:58:47,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1133.6ms TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:47,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-10-06 20:58:47,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 292. [2021-10-06 20:58:47,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 3.2130584192439864) internal successors, (935), 291 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:47,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 935 transitions. [2021-10-06 20:58:47,364 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 935 transitions. Word has length 17 [2021-10-06 20:58:47,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:47,365 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 935 transitions. [2021-10-06 20:58:47,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:47,365 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 935 transitions. [2021-10-06 20:58:47,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:58:47,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:47,366 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:47,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:47,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:47,569 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:47,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:47,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1982624691, now seen corresponding path program 42 times [2021-10-06 20:58:47,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:47,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675361266] [2021-10-06 20:58:47,571 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:58:47,571 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:47,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:47,572 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:47,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-06 20:58:48,051 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 20:58:48,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:48,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 20:58:48,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:48,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:48,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:49,279 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:49,280 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:49,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675361266] [2021-10-06 20:58:49,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675361266] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:49,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:49,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-06 20:58:49,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10716705] [2021-10-06 20:58:49,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:58:49,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:49,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:58:49,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:58:49,282 INFO L87 Difference]: Start difference. First operand 292 states and 935 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:50,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:50,589 INFO L93 Difference]: Finished difference Result 357 states and 1066 transitions. [2021-10-06 20:58:50,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 20:58:50,590 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 20:58:50,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:50,592 INFO L225 Difference]: With dead ends: 357 [2021-10-06 20:58:50,592 INFO L226 Difference]: Without dead ends: 352 [2021-10-06 20:58:50,592 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 723.6ms TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-10-06 20:58:50,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-10-06 20:58:50,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 300. [2021-10-06 20:58:50,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 3.240802675585284) internal successors, (969), 299 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:50,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 969 transitions. [2021-10-06 20:58:50,599 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 969 transitions. Word has length 17 [2021-10-06 20:58:50,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:50,599 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 969 transitions. [2021-10-06 20:58:50,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:50,599 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 969 transitions. [2021-10-06 20:58:50,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:58:50,600 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:50,601 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:50,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:50,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:50,808 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:50,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:50,809 INFO L82 PathProgramCache]: Analyzing trace with hash 2038035951, now seen corresponding path program 43 times [2021-10-06 20:58:50,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:50,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050629946] [2021-10-06 20:58:50,809 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:58:50,810 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:50,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:50,811 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:50,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-06 20:58:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:51,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 20:58:51,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:51,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:51,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:53,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:53,414 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:53,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050629946] [2021-10-06 20:58:53,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050629946] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:53,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:53,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-06 20:58:53,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569745885] [2021-10-06 20:58:53,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:58:53,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:53,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:58:53,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:58:53,417 INFO L87 Difference]: Start difference. First operand 300 states and 969 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:54,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:54,439 INFO L93 Difference]: Finished difference Result 353 states and 1063 transitions. [2021-10-06 20:58:54,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 20:58:54,440 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 20:58:54,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:54,442 INFO L225 Difference]: With dead ends: 353 [2021-10-06 20:58:54,442 INFO L226 Difference]: Without dead ends: 348 [2021-10-06 20:58:54,442 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1518.3ms TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-10-06 20:58:54,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-10-06 20:58:54,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 300. [2021-10-06 20:58:54,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 3.240802675585284) internal successors, (969), 299 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:54,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 969 transitions. [2021-10-06 20:58:54,449 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 969 transitions. Word has length 17 [2021-10-06 20:58:54,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:54,450 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 969 transitions. [2021-10-06 20:58:54,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:54,450 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 969 transitions. [2021-10-06 20:58:54,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:58:54,451 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:54,451 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:54,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:54,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:54,652 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:54,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:54,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1118678029, now seen corresponding path program 44 times [2021-10-06 20:58:54,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:54,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873821210] [2021-10-06 20:58:54,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:58:54,654 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:54,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:54,656 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:54,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-06 20:58:55,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:58:55,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:55,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 20:58:55,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:55,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:55,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:57,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:57,737 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:57,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873821210] [2021-10-06 20:58:57,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873821210] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:57,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:57,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 20:58:57,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647676565] [2021-10-06 20:58:57,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 20:58:57,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:57,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 20:58:57,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-06 20:58:57,738 INFO L87 Difference]: Start difference. First operand 300 states and 969 transitions. Second operand has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:59,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:59,096 INFO L93 Difference]: Finished difference Result 388 states and 1157 transitions. [2021-10-06 20:58:59,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 20:58:59,096 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 20:58:59,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:59,099 INFO L225 Difference]: With dead ends: 388 [2021-10-06 20:58:59,099 INFO L226 Difference]: Without dead ends: 374 [2021-10-06 20:58:59,099 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2416.7ms TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-10-06 20:58:59,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-10-06 20:58:59,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 326. [2021-10-06 20:58:59,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 3.243076923076923) internal successors, (1054), 325 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:59,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 1054 transitions. [2021-10-06 20:58:59,106 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 1054 transitions. Word has length 17 [2021-10-06 20:58:59,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:59,106 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 1054 transitions. [2021-10-06 20:58:59,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:59,107 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 1054 transitions. [2021-10-06 20:58:59,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:58:59,107 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:59,108 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:59,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Ended with exit code 0 [2021-10-06 20:58:59,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:59,309 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:59,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:59,309 INFO L82 PathProgramCache]: Analyzing trace with hash -555067227, now seen corresponding path program 45 times [2021-10-06 20:58:59,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:59,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164136517] [2021-10-06 20:58:59,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:58:59,311 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:59,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:59,312 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:59,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-06 20:58:59,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 20:58:59,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:00,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 20:59:00,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:00,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:00,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:01,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:01,563 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:01,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164136517] [2021-10-06 20:59:01,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164136517] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:01,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:01,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:59:01,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266065912] [2021-10-06 20:59:01,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:59:01,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:01,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:59:01,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:59:01,565 INFO L87 Difference]: Start difference. First operand 326 states and 1054 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:02,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:02,864 INFO L93 Difference]: Finished difference Result 401 states and 1191 transitions. [2021-10-06 20:59:02,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 20:59:02,864 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 20:59:02,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:02,866 INFO L225 Difference]: With dead ends: 401 [2021-10-06 20:59:02,867 INFO L226 Difference]: Without dead ends: 396 [2021-10-06 20:59:02,867 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1458.7ms TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-10-06 20:59:02,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-10-06 20:59:02,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 334. [2021-10-06 20:59:02,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 3.2612612612612613) internal successors, (1086), 333 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:02,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 1086 transitions. [2021-10-06 20:59:02,874 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 1086 transitions. Word has length 17 [2021-10-06 20:59:02,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:02,875 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 1086 transitions. [2021-10-06 20:59:02,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:02,875 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 1086 transitions. [2021-10-06 20:59:02,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:59:02,876 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:02,876 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:02,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Ended with exit code 0 [2021-10-06 20:59:03,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:03,090 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:59:03,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:03,091 INFO L82 PathProgramCache]: Analyzing trace with hash 2023340301, now seen corresponding path program 46 times [2021-10-06 20:59:03,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:03,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594925681] [2021-10-06 20:59:03,092 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:59:03,092 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:03,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:03,093 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:03,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-06 20:59:03,840 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:59:03,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:03,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 20:59:03,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:06,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:07,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:07,927 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:07,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594925681] [2021-10-06 20:59:07,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594925681] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:07,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:07,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:59:07,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812545274] [2021-10-06 20:59:07,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:59:07,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:07,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:59:07,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=199, Unknown=1, NotChecked=0, Total=240 [2021-10-06 20:59:07,930 INFO L87 Difference]: Start difference. First operand 334 states and 1086 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:30,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:30,229 INFO L93 Difference]: Finished difference Result 423 states and 1250 transitions. [2021-10-06 20:59:30,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 20:59:30,229 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 20:59:30,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:30,233 INFO L225 Difference]: With dead ends: 423 [2021-10-06 20:59:30,233 INFO L226 Difference]: Without dead ends: 418 [2021-10-06 20:59:30,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 4638.9ms TimeCoverageRelationStatistics Valid=71, Invalid=308, Unknown=1, NotChecked=0, Total=380 [2021-10-06 20:59:30,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-10-06 20:59:30,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 336. [2021-10-06 20:59:30,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 3.2686567164179103) internal successors, (1095), 335 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:30,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 1095 transitions. [2021-10-06 20:59:30,243 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 1095 transitions. Word has length 17 [2021-10-06 20:59:30,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:30,243 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 1095 transitions. [2021-10-06 20:59:30,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:30,244 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 1095 transitions. [2021-10-06 20:59:30,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:59:30,245 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:30,245 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:30,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:30,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:30,460 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:59:30,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:30,460 INFO L82 PathProgramCache]: Analyzing trace with hash 2078751561, now seen corresponding path program 47 times [2021-10-06 20:59:30,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:30,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308879033] [2021-10-06 20:59:30,462 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:59:30,463 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:30,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:30,464 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:30,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-06 20:59:31,573 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 20:59:31,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:31,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 20:59:31,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:32,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:32,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:34,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:34,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:34,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308879033] [2021-10-06 20:59:34,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308879033] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:34,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:34,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:59:34,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868588493] [2021-10-06 20:59:34,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:59:34,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:34,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:59:34,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:59:34,058 INFO L87 Difference]: Start difference. First operand 336 states and 1095 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:35,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:35,306 INFO L93 Difference]: Finished difference Result 396 states and 1195 transitions. [2021-10-06 20:59:35,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 20:59:35,307 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 20:59:35,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:35,309 INFO L225 Difference]: With dead ends: 396 [2021-10-06 20:59:35,309 INFO L226 Difference]: Without dead ends: 386 [2021-10-06 20:59:35,310 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2368.1ms TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-06 20:59:35,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-10-06 20:59:35,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 330. [2021-10-06 20:59:35,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 3.2522796352583585) internal successors, (1070), 329 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:35,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 1070 transitions. [2021-10-06 20:59:35,325 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 1070 transitions. Word has length 17 [2021-10-06 20:59:35,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:35,325 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 1070 transitions. [2021-10-06 20:59:35,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:35,325 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 1070 transitions. [2021-10-06 20:59:35,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:59:35,326 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:35,326 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:35,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2021-10-06 20:59:35,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:35,527 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:59:35,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:35,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1840893161, now seen corresponding path program 48 times [2021-10-06 20:59:35,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:35,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14919540] [2021-10-06 20:59:35,529 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:59:35,530 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:35,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:35,531 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:35,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-06 20:59:36,279 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 20:59:36,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:36,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 20:59:36,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:36,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:36,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:38,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:38,630 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:38,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14919540] [2021-10-06 20:59:38,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14919540] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:38,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:38,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-10-06 20:59:38,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852318155] [2021-10-06 20:59:38,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 20:59:38,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:38,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 20:59:38,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-06 20:59:38,632 INFO L87 Difference]: Start difference. First operand 330 states and 1070 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:39,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:39,151 INFO L93 Difference]: Finished difference Result 383 states and 1173 transitions. [2021-10-06 20:59:39,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 20:59:39,151 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 20:59:39,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:39,155 INFO L225 Difference]: With dead ends: 383 [2021-10-06 20:59:39,155 INFO L226 Difference]: Without dead ends: 378 [2021-10-06 20:59:39,155 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1825.6ms TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:59:39,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-10-06 20:59:39,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 334. [2021-10-06 20:59:39,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 3.2612612612612613) internal successors, (1086), 333 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:39,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 1086 transitions. [2021-10-06 20:59:39,165 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 1086 transitions. Word has length 17 [2021-10-06 20:59:39,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:39,165 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 1086 transitions. [2021-10-06 20:59:39,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:39,166 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 1086 transitions. [2021-10-06 20:59:39,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:59:39,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:39,167 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:39,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:39,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:39,378 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:59:39,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:39,378 INFO L82 PathProgramCache]: Analyzing trace with hash 928391309, now seen corresponding path program 49 times [2021-10-06 20:59:39,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:39,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333170904] [2021-10-06 20:59:39,380 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:59:39,380 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:39,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:39,381 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:39,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-06 20:59:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:59:40,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 20:59:40,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:40,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:40,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:42,107 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:42,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333170904] [2021-10-06 20:59:42,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333170904] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:42,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:42,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-06 20:59:42,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316393252] [2021-10-06 20:59:42,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:59:42,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:42,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:59:42,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:59:42,109 INFO L87 Difference]: Start difference. First operand 334 states and 1086 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:42,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:42,615 INFO L93 Difference]: Finished difference Result 401 states and 1211 transitions. [2021-10-06 20:59:42,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 20:59:42,616 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 20:59:42,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:42,619 INFO L225 Difference]: With dead ends: 401 [2021-10-06 20:59:42,620 INFO L226 Difference]: Without dead ends: 396 [2021-10-06 20:59:42,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1492.9ms TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-10-06 20:59:42,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-10-06 20:59:42,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 340. [2021-10-06 20:59:42,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 3.2772861356932155) internal successors, (1111), 339 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:42,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1111 transitions. [2021-10-06 20:59:42,626 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1111 transitions. Word has length 17 [2021-10-06 20:59:42,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:42,626 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 1111 transitions. [2021-10-06 20:59:42,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:42,627 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1111 transitions. [2021-10-06 20:59:42,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:59:42,628 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:42,628 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:42,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:42,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:42,842 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:59:42,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:42,843 INFO L82 PathProgramCache]: Analyzing trace with hash 983802569, now seen corresponding path program 50 times [2021-10-06 20:59:42,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:42,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852197760] [2021-10-06 20:59:42,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:59:42,845 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:42,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:42,846 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:42,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-06 20:59:43,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:59:43,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:43,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 20:59:43,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:43,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:43,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:44,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:44,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:44,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852197760] [2021-10-06 20:59:44,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852197760] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:44,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:44,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-06 20:59:44,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307501078] [2021-10-06 20:59:44,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:59:44,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:44,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:59:44,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:59:44,874 INFO L87 Difference]: Start difference. First operand 340 states and 1111 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:46,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:46,449 INFO L93 Difference]: Finished difference Result 393 states and 1201 transitions. [2021-10-06 20:59:46,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 20:59:46,450 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 20:59:46,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:46,452 INFO L225 Difference]: With dead ends: 393 [2021-10-06 20:59:46,452 INFO L226 Difference]: Without dead ends: 388 [2021-10-06 20:59:46,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 756.1ms TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-10-06 20:59:46,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-10-06 20:59:46,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 334. [2021-10-06 20:59:46,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 3.2612612612612613) internal successors, (1086), 333 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:46,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 1086 transitions. [2021-10-06 20:59:46,458 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 1086 transitions. Word has length 17 [2021-10-06 20:59:46,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:46,459 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 1086 transitions. [2021-10-06 20:59:46,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:46,459 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 1086 transitions. [2021-10-06 20:59:46,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 20:59:46,460 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:46,460 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:46,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Ended with exit code 0 [2021-10-06 20:59:46,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:46,661 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:59:46,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:46,662 INFO L82 PathProgramCache]: Analyzing trace with hash -117566754, now seen corresponding path program 51 times [2021-10-06 20:59:46,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:46,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112348397] [2021-10-06 20:59:46,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:59:46,663 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:46,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:46,664 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:46,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-06 20:59:47,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 20:59:47,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:47,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 20:59:47,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:47,429 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:47,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:47,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:47,703 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:47,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112348397] [2021-10-06 20:59:47,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112348397] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:47,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:47,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 20:59:47,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87582198] [2021-10-06 20:59:47,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:59:47,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:47,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:59:47,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:59:47,705 INFO L87 Difference]: Start difference. First operand 334 states and 1086 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:48,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:48,311 INFO L93 Difference]: Finished difference Result 430 states and 1335 transitions. [2021-10-06 20:59:48,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:59:48,312 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 20:59:48,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:48,314 INFO L225 Difference]: With dead ends: 430 [2021-10-06 20:59:48,314 INFO L226 Difference]: Without dead ends: 412 [2021-10-06 20:59:48,314 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 504.2ms TimeCoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:59:48,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-10-06 20:59:48,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 328. [2021-10-06 20:59:48,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 3.2813455657492354) internal successors, (1073), 327 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:48,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 1073 transitions. [2021-10-06 20:59:48,321 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 1073 transitions. Word has length 18 [2021-10-06 20:59:48,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:48,321 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 1073 transitions. [2021-10-06 20:59:48,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:48,321 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 1073 transitions. [2021-10-06 20:59:48,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 20:59:48,322 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:48,322 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:48,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:48,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:48,524 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:59:48,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:48,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1323196314, now seen corresponding path program 52 times [2021-10-06 20:59:48,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:48,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816254353] [2021-10-06 20:59:48,527 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:59:48,527 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:48,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:48,528 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:48,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-06 20:59:49,117 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:59:49,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:49,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 20:59:49,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:49,310 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:49,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:49,683 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:49,683 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:49,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816254353] [2021-10-06 20:59:49,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [816254353] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:49,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:49,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 20:59:49,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120684593] [2021-10-06 20:59:49,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 20:59:49,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:49,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 20:59:49,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-10-06 20:59:49,686 INFO L87 Difference]: Start difference. First operand 328 states and 1073 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:50,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:50,712 INFO L93 Difference]: Finished difference Result 590 states and 1793 transitions. [2021-10-06 20:59:50,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-06 20:59:50,713 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 20:59:50,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:50,716 INFO L225 Difference]: With dead ends: 590 [2021-10-06 20:59:50,716 INFO L226 Difference]: Without dead ends: 590 [2021-10-06 20:59:50,716 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 929.4ms TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 20:59:50,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-10-06 20:59:50,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 332. [2021-10-06 20:59:50,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 3.283987915407855) internal successors, (1087), 331 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:50,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 1087 transitions. [2021-10-06 20:59:50,725 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 1087 transitions. Word has length 18 [2021-10-06 20:59:50,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:50,725 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 1087 transitions. [2021-10-06 20:59:50,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:50,726 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 1087 transitions. [2021-10-06 20:59:50,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 20:59:50,726 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:50,726 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:50,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Ended with exit code 0 [2021-10-06 20:59:50,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:50,927 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:59:50,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:50,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1764370236, now seen corresponding path program 53 times [2021-10-06 20:59:50,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:50,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832197668] [2021-10-06 20:59:50,929 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:59:50,929 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:50,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:50,930 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:50,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-06 20:59:51,527 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 20:59:51,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:51,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:59:51,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:51,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:51,994 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:51,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:51,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832197668] [2021-10-06 20:59:51,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832197668] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:51,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:51,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 20:59:51,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623588418] [2021-10-06 20:59:51,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:59:51,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:51,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:59:51,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:59:51,997 INFO L87 Difference]: Start difference. First operand 332 states and 1087 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:52,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:52,757 INFO L93 Difference]: Finished difference Result 440 states and 1357 transitions. [2021-10-06 20:59:52,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-06 20:59:52,758 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 20:59:52,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:52,760 INFO L225 Difference]: With dead ends: 440 [2021-10-06 20:59:52,760 INFO L226 Difference]: Without dead ends: 428 [2021-10-06 20:59:52,761 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 666.7ms TimeCoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2021-10-06 20:59:52,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-10-06 20:59:52,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 348. [2021-10-06 20:59:52,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 3.2276657060518734) internal successors, (1120), 347 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:52,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 1120 transitions. [2021-10-06 20:59:52,767 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 1120 transitions. Word has length 18 [2021-10-06 20:59:52,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:52,768 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 1120 transitions. [2021-10-06 20:59:52,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:52,768 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 1120 transitions. [2021-10-06 20:59:52,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 20:59:52,769 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:52,769 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:52,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:52,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:52,970 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:59:52,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:52,971 INFO L82 PathProgramCache]: Analyzing trace with hash -794708316, now seen corresponding path program 54 times [2021-10-06 20:59:52,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:52,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812926610] [2021-10-06 20:59:52,972 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:59:52,972 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:52,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:52,975 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:52,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-06 20:59:53,554 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 20:59:53,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:53,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:59:53,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:53,727 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:53,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:54,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:54,030 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:54,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812926610] [2021-10-06 20:59:54,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812926610] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:54,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:54,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 20:59:54,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933932375] [2021-10-06 20:59:54,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:59:54,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:54,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:59:54,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:59:54,032 INFO L87 Difference]: Start difference. First operand 348 states and 1120 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:55,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:55,459 INFO L93 Difference]: Finished difference Result 500 states and 1474 transitions. [2021-10-06 20:59:55,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 20:59:55,460 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 20:59:55,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:55,464 INFO L225 Difference]: With dead ends: 500 [2021-10-06 20:59:55,464 INFO L226 Difference]: Without dead ends: 492 [2021-10-06 20:59:55,464 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1009.7ms TimeCoverageRelationStatistics Valid=227, Invalid=895, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 20:59:55,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-10-06 20:59:55,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 356. [2021-10-06 20:59:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 3.256338028169014) internal successors, (1156), 355 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:55,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1156 transitions. [2021-10-06 20:59:55,475 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1156 transitions. Word has length 18 [2021-10-06 20:59:55,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:55,475 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1156 transitions. [2021-10-06 20:59:55,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:55,475 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1156 transitions. [2021-10-06 20:59:55,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 20:59:55,476 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:55,476 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:55,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:55,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:55,677 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:59:55,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:55,678 INFO L82 PathProgramCache]: Analyzing trace with hash 984352386, now seen corresponding path program 55 times [2021-10-06 20:59:55,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:55,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039373911] [2021-10-06 20:59:55,679 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:59:55,679 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:55,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:55,680 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:55,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-06 20:59:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:59:56,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:59:56,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:56,414 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:56,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:56,682 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:56,683 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:56,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039373911] [2021-10-06 20:59:56,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039373911] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:56,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:56,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 20:59:56,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139770722] [2021-10-06 20:59:56,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:59:56,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:56,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:59:56,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:59:56,684 INFO L87 Difference]: Start difference. First operand 356 states and 1156 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:57,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:57,618 INFO L93 Difference]: Finished difference Result 478 states and 1509 transitions. [2021-10-06 20:59:57,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 20:59:57,619 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 20:59:57,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:57,622 INFO L225 Difference]: With dead ends: 478 [2021-10-06 20:59:57,622 INFO L226 Difference]: Without dead ends: 472 [2021-10-06 20:59:57,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 768.0ms TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2021-10-06 20:59:57,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-10-06 20:59:57,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 364. [2021-10-06 20:59:57,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 3.286501377410468) internal successors, (1193), 363 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:57,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 1193 transitions. [2021-10-06 20:59:57,632 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 1193 transitions. Word has length 18 [2021-10-06 20:59:57,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:57,633 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 1193 transitions. [2021-10-06 20:59:57,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:57,633 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 1193 transitions. [2021-10-06 20:59:57,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 20:59:57,634 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:57,634 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:57,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:57,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:57,836 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:59:57,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:57,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1787752552, now seen corresponding path program 56 times [2021-10-06 20:59:57,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:57,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712490274] [2021-10-06 20:59:57,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:59:57,838 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:57,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:57,838 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:57,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-06 20:59:58,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:59:58,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:58,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:59:58,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:58,693 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:58,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:58,993 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:58,993 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:58,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712490274] [2021-10-06 20:59:58,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712490274] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:58,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:58,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 20:59:58,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583092158] [2021-10-06 20:59:58,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:59:58,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:58,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:59:58,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:59:58,995 INFO L87 Difference]: Start difference. First operand 364 states and 1193 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:00,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:00,051 INFO L93 Difference]: Finished difference Result 546 states and 1602 transitions. [2021-10-06 21:00:00,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:00:00,052 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:00:00,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:00,055 INFO L225 Difference]: With dead ends: 546 [2021-10-06 21:00:00,055 INFO L226 Difference]: Without dead ends: 546 [2021-10-06 21:00:00,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 771.9ms TimeCoverageRelationStatistics Valid=179, Invalid=633, Unknown=0, NotChecked=0, Total=812 [2021-10-06 21:00:00,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-10-06 21:00:00,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 366. [2021-10-06 21:00:00,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 365 states have (on average 3.293150684931507) internal successors, (1202), 365 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:00,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 1202 transitions. [2021-10-06 21:00:00,065 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 1202 transitions. Word has length 18 [2021-10-06 21:00:00,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:00,066 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 1202 transitions. [2021-10-06 21:00:00,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:00,066 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 1202 transitions. [2021-10-06 21:00:00,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:00:00,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:00,067 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:00,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Ended with exit code 0 [2021-10-06 21:00:00,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:00:00,268 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:00:00,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:00,269 INFO L82 PathProgramCache]: Analyzing trace with hash -732207382, now seen corresponding path program 57 times [2021-10-06 21:00:00,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:00,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422910481] [2021-10-06 21:00:00,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:00:00,270 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:00,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:00,272 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:00:00,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-06 21:00:00,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:00:00,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:00,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:00:00,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:01,108 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:01,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:01,644 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:01,645 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:01,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422910481] [2021-10-06 21:00:01,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422910481] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:01,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:01,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-06 21:00:01,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641347045] [2021-10-06 21:00:01,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:00:01,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:01,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:00:01,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:00:01,646 INFO L87 Difference]: Start difference. First operand 366 states and 1202 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:04,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:04,919 INFO L93 Difference]: Finished difference Result 610 states and 1801 transitions. [2021-10-06 21:00:04,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 21:00:04,921 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:00:04,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:04,923 INFO L225 Difference]: With dead ends: 610 [2021-10-06 21:00:04,923 INFO L226 Difference]: Without dead ends: 606 [2021-10-06 21:00:04,923 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 3061.8ms TimeCoverageRelationStatistics Valid=286, Invalid=974, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:00:04,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-10-06 21:00:04,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 386. [2021-10-06 21:00:04,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.3194805194805195) internal successors, (1278), 385 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:04,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1278 transitions. [2021-10-06 21:00:04,936 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1278 transitions. Word has length 18 [2021-10-06 21:00:04,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:04,936 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 1278 transitions. [2021-10-06 21:00:04,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:04,936 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1278 transitions. [2021-10-06 21:00:04,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:00:04,937 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:04,937 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:04,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:05,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:00:05,139 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:00:05,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:05,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1890907778, now seen corresponding path program 58 times [2021-10-06 21:00:05,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:05,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080744795] [2021-10-06 21:00:05,140 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:00:05,140 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:05,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:05,141 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:00:05,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-06 21:00:05,765 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:00:05,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:05,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:00:05,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:05,973 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:05,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:06,492 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:06,492 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:06,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080744795] [2021-10-06 21:00:06,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1080744795] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:06,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:06,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:00:06,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903488196] [2021-10-06 21:00:06,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:00:06,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:06,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:00:06,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:00:06,493 INFO L87 Difference]: Start difference. First operand 386 states and 1278 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:10,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:10,784 INFO L93 Difference]: Finished difference Result 608 states and 1782 transitions. [2021-10-06 21:00:10,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 21:00:10,785 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:00:10,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:10,787 INFO L225 Difference]: With dead ends: 608 [2021-10-06 21:00:10,787 INFO L226 Difference]: Without dead ends: 608 [2021-10-06 21:00:10,787 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 3968.6ms TimeCoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:00:10,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-10-06 21:00:10,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 384. [2021-10-06 21:00:10,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.2924281984334205) internal successors, (1261), 383 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:10,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1261 transitions. [2021-10-06 21:00:10,796 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1261 transitions. Word has length 18 [2021-10-06 21:00:10,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:10,796 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 1261 transitions. [2021-10-06 21:00:10,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:10,796 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1261 transitions. [2021-10-06 21:00:10,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:00:10,797 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:10,797 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:10,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:10,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:00:10,999 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:00:10,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:10,999 INFO L82 PathProgramCache]: Analyzing trace with hash -114649946, now seen corresponding path program 59 times [2021-10-06 21:00:11,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:11,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063667133] [2021-10-06 21:00:11,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:00:11,001 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:11,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:11,002 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:00:11,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-06 21:00:11,678 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:00:11,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:11,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:00:11,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:11,846 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:11,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:12,451 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:12,451 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:12,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063667133] [2021-10-06 21:00:12,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063667133] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:12,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:12,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:00:12,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752619376] [2021-10-06 21:00:12,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:00:12,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:12,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:00:12,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:00:12,453 INFO L87 Difference]: Start difference. First operand 384 states and 1261 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:18,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:18,334 INFO L93 Difference]: Finished difference Result 1030 states and 3107 transitions. [2021-10-06 21:00:18,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-06 21:00:18,336 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:00:18,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:18,339 INFO L225 Difference]: With dead ends: 1030 [2021-10-06 21:00:18,339 INFO L226 Difference]: Without dead ends: 1030 [2021-10-06 21:00:18,339 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 972 ImplicationChecksByTransitivity, 5140.9ms TimeCoverageRelationStatistics Valid=692, Invalid=2968, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 21:00:18,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2021-10-06 21:00:18,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 400. [2021-10-06 21:00:18,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 3.235588972431078) internal successors, (1291), 399 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) [2021-10-06 21:00:18,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1291 transitions. [2021-10-06 21:00:18,351 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1291 transitions. Word has length 18 [2021-10-06 21:00:18,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:18,352 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 1291 transitions. [2021-10-06 21:00:18,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:18,352 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1291 transitions. [2021-10-06 21:00:18,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:00:18,353 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:18,353 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:18,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:18,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:00:18,554 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:00:18,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:18,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1596154044, now seen corresponding path program 60 times [2021-10-06 21:00:18,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:18,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479773277] [2021-10-06 21:00:18,556 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:00:18,556 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:18,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:18,557 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:00:18,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-06 21:00:19,208 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:00:19,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:19,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:00:19,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:19,338 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:19,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:19,845 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:19,846 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:19,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479773277] [2021-10-06 21:00:19,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1479773277] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:19,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:19,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-06 21:00:19,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078338934] [2021-10-06 21:00:19,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:00:19,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:19,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:00:19,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:00:19,848 INFO L87 Difference]: Start difference. First operand 400 states and 1291 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:27,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:27,666 INFO L93 Difference]: Finished difference Result 660 states and 1922 transitions. [2021-10-06 21:00:27,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-06 21:00:27,668 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:00:27,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:27,670 INFO L225 Difference]: With dead ends: 660 [2021-10-06 21:00:27,670 INFO L226 Difference]: Without dead ends: 654 [2021-10-06 21:00:27,670 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 6008.7ms TimeCoverageRelationStatistics Valid=482, Invalid=2068, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 21:00:27,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-10-06 21:00:27,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 432. [2021-10-06 21:00:27,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 3.2830626450116007) internal successors, (1415), 431 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:27,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 1415 transitions. [2021-10-06 21:00:27,681 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 1415 transitions. Word has length 18 [2021-10-06 21:00:27,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:27,681 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 1415 transitions. [2021-10-06 21:00:27,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:27,681 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 1415 transitions. [2021-10-06 21:00:27,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:00:27,682 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:27,683 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:27,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Ended with exit code 0 [2021-10-06 21:00:27,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:00:27,884 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:00:27,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:27,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1025067996, now seen corresponding path program 61 times [2021-10-06 21:00:27,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:27,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395628160] [2021-10-06 21:00:27,885 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:00:27,886 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:27,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:27,887 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:00:27,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-06 21:00:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:00:28,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:00:28,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:28,672 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:28,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:29,024 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:29,024 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:29,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395628160] [2021-10-06 21:00:29,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395628160] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:29,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:29,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:00:29,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593733063] [2021-10-06 21:00:29,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:00:29,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:29,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:00:29,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:00:29,027 INFO L87 Difference]: Start difference. First operand 432 states and 1415 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:30,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:30,801 INFO L93 Difference]: Finished difference Result 586 states and 1781 transitions. [2021-10-06 21:00:30,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:00:30,802 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:00:30,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:30,804 INFO L225 Difference]: With dead ends: 586 [2021-10-06 21:00:30,804 INFO L226 Difference]: Without dead ends: 578 [2021-10-06 21:00:30,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1523.8ms TimeCoverageRelationStatistics Valid=302, Invalid=820, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:00:30,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-10-06 21:00:30,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 444. [2021-10-06 21:00:30,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 3.2979683972911964) internal successors, (1461), 443 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:30,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1461 transitions. [2021-10-06 21:00:30,813 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1461 transitions. Word has length 18 [2021-10-06 21:00:30,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:30,814 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 1461 transitions. [2021-10-06 21:00:30,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:30,814 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1461 transitions. [2021-10-06 21:00:30,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:00:30,815 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:30,816 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:30,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:31,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:00:31,031 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:00:31,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:31,032 INFO L82 PathProgramCache]: Analyzing trace with hash -691491772, now seen corresponding path program 62 times [2021-10-06 21:00:31,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:31,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771478110] [2021-10-06 21:00:31,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:00:31,033 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:31,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:31,034 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:00:31,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-06 21:00:32,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:00:32,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:32,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:00:32,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:32,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:32,781 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:32,781 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:32,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771478110] [2021-10-06 21:00:32,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771478110] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:32,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:32,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-06 21:00:32,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664854832] [2021-10-06 21:00:32,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:00:32,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:32,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:00:32,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:00:32,784 INFO L87 Difference]: Start difference. First operand 444 states and 1461 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:36,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:36,731 INFO L93 Difference]: Finished difference Result 652 states and 1952 transitions. [2021-10-06 21:00:36,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-06 21:00:36,732 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:00:36,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:36,733 INFO L225 Difference]: With dead ends: 652 [2021-10-06 21:00:36,733 INFO L226 Difference]: Without dead ends: 646 [2021-10-06 21:00:36,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 3458.6ms TimeCoverageRelationStatistics Valid=339, Invalid=1143, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 21:00:36,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-10-06 21:00:36,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 460. [2021-10-06 21:00:36,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 3.326797385620915) internal successors, (1527), 459 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:36,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 1527 transitions. [2021-10-06 21:00:36,749 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 1527 transitions. Word has length 18 [2021-10-06 21:00:36,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:36,749 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 1527 transitions. [2021-10-06 21:00:36,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:36,750 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 1527 transitions. [2021-10-06 21:00:36,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:00:36,751 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:36,751 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:36,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:36,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:00:36,952 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:00:36,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:36,953 INFO L82 PathProgramCache]: Analyzing trace with hash 735412290, now seen corresponding path program 63 times [2021-10-06 21:00:36,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:36,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355677346] [2021-10-06 21:00:36,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:00:36,954 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:36,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:36,955 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:00:36,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-06 21:00:37,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:00:37,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:37,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:00:37,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:37,802 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:37,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:38,097 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:38,098 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:38,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355677346] [2021-10-06 21:00:38,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355677346] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:38,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:38,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:00:38,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028110856] [2021-10-06 21:00:38,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:00:38,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:38,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:00:38,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:00:38,101 INFO L87 Difference]: Start difference. First operand 460 states and 1527 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:39,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:39,373 INFO L93 Difference]: Finished difference Result 554 states and 1696 transitions. [2021-10-06 21:00:39,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:00:39,374 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:00:39,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:39,376 INFO L225 Difference]: With dead ends: 554 [2021-10-06 21:00:39,377 INFO L226 Difference]: Without dead ends: 538 [2021-10-06 21:00:39,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 979.3ms TimeCoverageRelationStatistics Valid=178, Invalid=692, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:00:39,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-10-06 21:00:39,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 460. [2021-10-06 21:00:39,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 3.318082788671024) internal successors, (1523), 459 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:39,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 1523 transitions. [2021-10-06 21:00:39,391 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 1523 transitions. Word has length 18 [2021-10-06 21:00:39,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:39,392 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 1523 transitions. [2021-10-06 21:00:39,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:39,392 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 1523 transitions. [2021-10-06 21:00:39,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:00:39,393 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:39,393 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:39,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:39,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:00:39,595 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:00:39,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:39,596 INFO L82 PathProgramCache]: Analyzing trace with hash -64592286, now seen corresponding path program 64 times [2021-10-06 21:00:39,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:39,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530060196] [2021-10-06 21:00:39,597 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:00:39,597 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:39,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:39,598 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:00:39,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-06 21:00:40,248 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:00:40,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:40,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:00:40,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:40,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:40,776 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:40,777 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:40,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530060196] [2021-10-06 21:00:40,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530060196] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:40,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:40,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:00:40,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991705329] [2021-10-06 21:00:40,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:00:40,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:40,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:00:40,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:00:40,778 INFO L87 Difference]: Start difference. First operand 460 states and 1523 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:42,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:42,814 INFO L93 Difference]: Finished difference Result 612 states and 1863 transitions. [2021-10-06 21:00:42,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:00:42,815 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:00:42,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:42,817 INFO L225 Difference]: With dead ends: 612 [2021-10-06 21:00:42,817 INFO L226 Difference]: Without dead ends: 600 [2021-10-06 21:00:42,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1693.4ms TimeCoverageRelationStatistics Valid=307, Invalid=1025, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:00:42,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-10-06 21:00:42,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 476. [2021-10-06 21:00:42,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 3.3410526315789473) internal successors, (1587), 475 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:42,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1587 transitions. [2021-10-06 21:00:42,827 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1587 transitions. Word has length 18 [2021-10-06 21:00:42,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:42,827 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 1587 transitions. [2021-10-06 21:00:42,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:42,827 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1587 transitions. [2021-10-06 21:00:42,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:00:42,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:42,828 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:42,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:43,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:00:43,030 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:00:43,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:43,030 INFO L82 PathProgramCache]: Analyzing trace with hash 797913224, now seen corresponding path program 65 times [2021-10-06 21:00:43,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:43,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005395964] [2021-10-06 21:00:43,031 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:00:43,031 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:43,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:43,033 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:00:43,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-06 21:00:43,698 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:00:43,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:43,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:00:43,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:43,838 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:43,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:44,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:44,274 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:44,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005395964] [2021-10-06 21:00:44,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005395964] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:44,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:44,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:00:44,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438084520] [2021-10-06 21:00:44,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:00:44,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:44,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:00:44,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:00:44,276 INFO L87 Difference]: Start difference. First operand 476 states and 1587 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:48,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:48,981 INFO L93 Difference]: Finished difference Result 1024 states and 2964 transitions. [2021-10-06 21:00:48,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-06 21:00:48,983 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:00:48,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:48,985 INFO L225 Difference]: With dead ends: 1024 [2021-10-06 21:00:48,985 INFO L226 Difference]: Without dead ends: 1024 [2021-10-06 21:00:48,986 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 4073.1ms TimeCoverageRelationStatistics Valid=512, Invalid=1650, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:00:48,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-10-06 21:00:48,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 500. [2021-10-06 21:00:48,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 3.3567134268537075) internal successors, (1675), 499 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:48,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 1675 transitions. [2021-10-06 21:00:48,998 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 1675 transitions. Word has length 18 [2021-10-06 21:00:48,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:48,998 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 1675 transitions. [2021-10-06 21:00:48,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:48,998 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1675 transitions. [2021-10-06 21:00:48,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:00:48,999 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:48,999 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:49,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:49,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:00:49,201 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:00:49,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:49,201 INFO L82 PathProgramCache]: Analyzing trace with hash -873938912, now seen corresponding path program 66 times [2021-10-06 21:00:49,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:49,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110973196] [2021-10-06 21:00:49,202 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:00:49,203 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:49,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:49,204 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:00:49,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-06 21:00:49,894 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:00:49,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:49,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:00:49,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:50,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:50,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:50,519 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:50,519 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:50,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110973196] [2021-10-06 21:00:50,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110973196] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:50,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:50,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:00:50,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185793513] [2021-10-06 21:00:50,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:00:50,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:50,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:00:50,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:00:50,521 INFO L87 Difference]: Start difference. First operand 500 states and 1675 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:56,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:56,886 INFO L93 Difference]: Finished difference Result 910 states and 2612 transitions. [2021-10-06 21:00:56,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:00:56,887 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:00:56,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:56,889 INFO L225 Difference]: With dead ends: 910 [2021-10-06 21:00:56,889 INFO L226 Difference]: Without dead ends: 910 [2021-10-06 21:00:56,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 5120.9ms TimeCoverageRelationStatistics Valid=393, Invalid=1247, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 21:00:56,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2021-10-06 21:00:56,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 506. [2021-10-06 21:00:56,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 505 states have (on average 3.384158415841584) internal successors, (1709), 505 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:56,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 1709 transitions. [2021-10-06 21:00:56,911 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 1709 transitions. Word has length 18 [2021-10-06 21:00:56,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:56,911 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 1709 transitions. [2021-10-06 21:00:56,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:56,912 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 1709 transitions. [2021-10-06 21:00:56,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:00:56,913 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:56,913 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:56,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Ended with exit code 0 [2021-10-06 21:00:57,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:00:57,114 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:00:57,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:57,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1307335010, now seen corresponding path program 67 times [2021-10-06 21:00:57,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:57,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472256395] [2021-10-06 21:00:57,116 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:00:57,116 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:57,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:57,117 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:00:57,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-06 21:00:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:00:57,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:00:57,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:57,972 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:57,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:58,299 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:58,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472256395] [2021-10-06 21:00:58,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472256395] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:58,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:58,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:00:58,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291174288] [2021-10-06 21:00:58,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:00:58,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:58,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:00:58,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:00:58,301 INFO L87 Difference]: Start difference. First operand 506 states and 1709 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:59,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:59,314 INFO L93 Difference]: Finished difference Result 574 states and 1849 transitions. [2021-10-06 21:00:59,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 21:00:59,315 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:00:59,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:59,317 INFO L225 Difference]: With dead ends: 574 [2021-10-06 21:00:59,317 INFO L226 Difference]: Without dead ends: 562 [2021-10-06 21:00:59,317 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 806.4ms TimeCoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:00:59,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-10-06 21:00:59,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 510. [2021-10-06 21:00:59,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 3.3673870333988214) internal successors, (1714), 509 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:59,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 1714 transitions. [2021-10-06 21:00:59,334 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 1714 transitions. Word has length 18 [2021-10-06 21:00:59,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:59,334 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 1714 transitions. [2021-10-06 21:00:59,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:59,334 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 1714 transitions. [2021-10-06 21:00:59,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:00:59,336 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:59,336 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:59,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:59,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:00:59,552 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:00:59,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:59,553 INFO L82 PathProgramCache]: Analyzing trace with hash -337673090, now seen corresponding path program 68 times [2021-10-06 21:00:59,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:59,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17736105] [2021-10-06 21:00:59,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:00:59,554 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:59,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:59,555 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:00:59,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-06 21:01:00,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:01:00,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:00,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:01:00,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:00,942 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:00,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:01,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:01,274 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:01,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17736105] [2021-10-06 21:01:01,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17736105] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:01,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:01,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:01:01,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983158172] [2021-10-06 21:01:01,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:01:01,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:01,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:01:01,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:01:01,276 INFO L87 Difference]: Start difference. First operand 510 states and 1714 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:03,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:03,126 INFO L93 Difference]: Finished difference Result 636 states and 1982 transitions. [2021-10-06 21:01:03,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:01:03,127 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:01:03,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:03,128 INFO L225 Difference]: With dead ends: 636 [2021-10-06 21:01:03,128 INFO L226 Difference]: Without dead ends: 628 [2021-10-06 21:01:03,129 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1468.4ms TimeCoverageRelationStatistics Valid=237, Invalid=953, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:01:03,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-10-06 21:01:03,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 522. [2021-10-06 21:01:03,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 521 states have (on average 3.3761996161228405) internal successors, (1759), 521 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:03,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 1759 transitions. [2021-10-06 21:01:03,140 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 1759 transitions. Word has length 18 [2021-10-06 21:01:03,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:03,140 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 1759 transitions. [2021-10-06 21:01:03,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:03,140 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 1759 transitions. [2021-10-06 21:01:03,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:01:03,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:03,142 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:03,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:03,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:03,343 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:01:03,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:03,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1441387612, now seen corresponding path program 69 times [2021-10-06 21:01:03,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:03,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478203990] [2021-10-06 21:01:03,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:01:03,345 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:03,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:03,347 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:03,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-06 21:01:04,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:01:04,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:04,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:01:04,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:04,282 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:04,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:04,871 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:04,871 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:04,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478203990] [2021-10-06 21:01:04,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478203990] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:04,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:04,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-06 21:01:04,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589527300] [2021-10-06 21:01:04,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:01:04,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:04,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:01:04,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:01:04,873 INFO L87 Difference]: Start difference. First operand 522 states and 1759 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:07,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:07,620 INFO L93 Difference]: Finished difference Result 622 states and 1997 transitions. [2021-10-06 21:01:07,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 21:01:07,620 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:01:07,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:07,622 INFO L225 Difference]: With dead ends: 622 [2021-10-06 21:01:07,622 INFO L226 Difference]: Without dead ends: 616 [2021-10-06 21:01:07,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2208.5ms TimeCoverageRelationStatistics Valid=250, Invalid=742, Unknown=0, NotChecked=0, Total=992 [2021-10-06 21:01:07,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-10-06 21:01:07,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 534. [2021-10-06 21:01:07,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 533 states have (on average 3.375234521575985) internal successors, (1799), 533 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:07,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 1799 transitions. [2021-10-06 21:01:07,640 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 1799 transitions. Word has length 18 [2021-10-06 21:01:07,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:07,640 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 1799 transitions. [2021-10-06 21:01:07,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:07,640 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 1799 transitions. [2021-10-06 21:01:07,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:01:07,642 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:07,642 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:07,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:07,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:07,856 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:01:07,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:07,857 INFO L82 PathProgramCache]: Analyzing trace with hash -275172156, now seen corresponding path program 70 times [2021-10-06 21:01:07,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:07,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452782854] [2021-10-06 21:01:07,857 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:01:07,858 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:07,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:07,859 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:07,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-10-06 21:01:08,540 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:01:08,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:08,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:01:08,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:08,704 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:08,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:09,028 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:09,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:09,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452782854] [2021-10-06 21:01:09,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452782854] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:09,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:09,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:01:09,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740692282] [2021-10-06 21:01:09,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:01:09,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:09,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:01:09,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:01:09,030 INFO L87 Difference]: Start difference. First operand 534 states and 1799 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:11,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:11,193 INFO L93 Difference]: Finished difference Result 722 states and 2255 transitions. [2021-10-06 21:01:11,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:01:11,194 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:01:11,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:11,196 INFO L225 Difference]: With dead ends: 722 [2021-10-06 21:01:11,196 INFO L226 Difference]: Without dead ends: 722 [2021-10-06 21:01:11,196 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1602.5ms TimeCoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:01:11,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2021-10-06 21:01:11,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 546. [2021-10-06 21:01:11,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 545 states have (on average 3.385321100917431) internal successors, (1845), 545 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:11,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 1845 transitions. [2021-10-06 21:01:11,211 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 1845 transitions. Word has length 18 [2021-10-06 21:01:11,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:11,211 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 1845 transitions. [2021-10-06 21:01:11,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:11,212 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 1845 transitions. [2021-10-06 21:01:11,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:01:11,213 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:11,213 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:11,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:11,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:11,414 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:01:11,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:11,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1435441152, now seen corresponding path program 71 times [2021-10-06 21:01:11,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:11,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221464657] [2021-10-06 21:01:11,416 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:01:11,416 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:11,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:11,417 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:11,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-10-06 21:01:12,182 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:01:12,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:12,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:01:12,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:12,314 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:12,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:12,750 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:12,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221464657] [2021-10-06 21:01:12,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221464657] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:12,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:12,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:01:12,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977387973] [2021-10-06 21:01:12,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:01:12,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:12,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:01:12,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:01:12,752 INFO L87 Difference]: Start difference. First operand 546 states and 1845 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:15,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:15,967 INFO L93 Difference]: Finished difference Result 996 states and 3057 transitions. [2021-10-06 21:01:15,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-06 21:01:15,968 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:01:15,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:15,971 INFO L225 Difference]: With dead ends: 996 [2021-10-06 21:01:15,971 INFO L226 Difference]: Without dead ends: 996 [2021-10-06 21:01:15,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 2695.0ms TimeCoverageRelationStatistics Valid=415, Invalid=1565, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 21:01:15,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-10-06 21:01:15,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 556. [2021-10-06 21:01:15,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 3.383783783783784) internal successors, (1878), 555 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:15,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1878 transitions. [2021-10-06 21:01:15,991 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1878 transitions. Word has length 18 [2021-10-06 21:01:15,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:15,992 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1878 transitions. [2021-10-06 21:01:15,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:15,992 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1878 transitions. [2021-10-06 21:01:15,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:01:15,994 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:15,994 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:16,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:16,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:16,210 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:01:16,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:16,211 INFO L82 PathProgramCache]: Analyzing trace with hash 342385280, now seen corresponding path program 72 times [2021-10-06 21:01:16,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:16,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930855236] [2021-10-06 21:01:16,212 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:01:16,212 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:16,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:16,214 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:16,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-10-06 21:01:16,990 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:01:16,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:16,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:01:16,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:17,181 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:17,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:17,792 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:17,793 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:17,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930855236] [2021-10-06 21:01:17,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930855236] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:17,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:17,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:01:17,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786836209] [2021-10-06 21:01:17,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:01:17,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:17,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:01:17,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:01:17,796 INFO L87 Difference]: Start difference. First operand 556 states and 1878 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:23,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:23,645 INFO L93 Difference]: Finished difference Result 854 states and 2592 transitions. [2021-10-06 21:01:23,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:01:23,646 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:01:23,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:23,650 INFO L225 Difference]: With dead ends: 854 [2021-10-06 21:01:23,651 INFO L226 Difference]: Without dead ends: 854 [2021-10-06 21:01:23,651 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 5187.6ms TimeCoverageRelationStatistics Valid=411, Invalid=1311, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:01:23,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2021-10-06 21:01:23,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 552. [2021-10-06 21:01:23,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 551 states have (on average 3.382940108892922) internal successors, (1864), 551 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:23,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 1864 transitions. [2021-10-06 21:01:23,669 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 1864 transitions. Word has length 18 [2021-10-06 21:01:23,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:23,670 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 1864 transitions. [2021-10-06 21:01:23,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:23,670 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 1864 transitions. [2021-10-06 21:01:23,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:01:23,672 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:23,672 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:23,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:23,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:23,885 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:01:23,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:23,886 INFO L82 PathProgramCache]: Analyzing trace with hash 12525250, now seen corresponding path program 73 times [2021-10-06 21:01:23,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:23,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845490343] [2021-10-06 21:01:23,886 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:01:23,886 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:23,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:23,888 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:23,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-10-06 21:01:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:24,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:01:24,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:24,872 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:24,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:25,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:25,268 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:25,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845490343] [2021-10-06 21:01:25,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845490343] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:25,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:25,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:01:25,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522252169] [2021-10-06 21:01:25,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:01:25,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:25,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:01:25,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:01:25,269 INFO L87 Difference]: Start difference. First operand 552 states and 1864 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:25,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:25,997 INFO L93 Difference]: Finished difference Result 598 states and 1961 transitions. [2021-10-06 21:01:25,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:01:25,997 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:01:25,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:25,999 INFO L225 Difference]: With dead ends: 598 [2021-10-06 21:01:25,999 INFO L226 Difference]: Without dead ends: 586 [2021-10-06 21:01:25,999 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 708.3ms TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:01:26,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-10-06 21:01:26,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 558. [2021-10-06 21:01:26,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 557 states have (on average 3.362657091561939) internal successors, (1873), 557 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:26,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 1873 transitions. [2021-10-06 21:01:26,011 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 1873 transitions. Word has length 18 [2021-10-06 21:01:26,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:26,011 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 1873 transitions. [2021-10-06 21:01:26,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:26,011 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 1873 transitions. [2021-10-06 21:01:26,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:01:26,013 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:26,013 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:26,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Ended with exit code 0 [2021-10-06 21:01:26,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:26,226 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:01:26,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:26,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1014028504, now seen corresponding path program 74 times [2021-10-06 21:01:26,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:26,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87837615] [2021-10-06 21:01:26,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:01:26,228 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:26,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:26,229 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:26,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2021-10-06 21:01:27,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:01:27,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:27,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:01:27,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:27,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:27,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:27,614 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:27,615 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:27,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87837615] [2021-10-06 21:01:27,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87837615] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:27,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:27,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:01:27,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270413925] [2021-10-06 21:01:27,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:01:27,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:27,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:01:27,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:01:27,617 INFO L87 Difference]: Start difference. First operand 558 states and 1873 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:30,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:30,318 INFO L93 Difference]: Finished difference Result 644 states and 2048 transitions. [2021-10-06 21:01:30,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 21:01:30,319 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:01:30,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:30,321 INFO L225 Difference]: With dead ends: 644 [2021-10-06 21:01:30,321 INFO L226 Difference]: Without dead ends: 644 [2021-10-06 21:01:30,321 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2096.7ms TimeCoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:01:30,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-10-06 21:01:30,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 564. [2021-10-06 21:01:30,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 563 states have (on average 3.364120781527531) internal successors, (1894), 563 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:30,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 1894 transitions. [2021-10-06 21:01:30,332 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 1894 transitions. Word has length 18 [2021-10-06 21:01:30,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:30,332 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 1894 transitions. [2021-10-06 21:01:30,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:30,332 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 1894 transitions. [2021-10-06 21:01:30,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:01:30,333 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:30,334 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:30,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Ended with exit code 0 [2021-10-06 21:01:30,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:30,534 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:01:30,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:30,535 INFO L82 PathProgramCache]: Analyzing trace with hash -333970134, now seen corresponding path program 75 times [2021-10-06 21:01:30,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:30,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134193788] [2021-10-06 21:01:30,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:01:30,536 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:30,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:30,538 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:30,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2021-10-06 21:01:31,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:01:31,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:31,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:01:31,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:31,489 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:31,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:31,898 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:31,898 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:31,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134193788] [2021-10-06 21:01:31,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134193788] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:31,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:31,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:01:31,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817100938] [2021-10-06 21:01:31,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:01:31,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:31,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:01:31,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:01:31,899 INFO L87 Difference]: Start difference. First operand 564 states and 1894 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:33,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:33,922 INFO L93 Difference]: Finished difference Result 684 states and 2147 transitions. [2021-10-06 21:01:33,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-06 21:01:33,922 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:01:33,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:33,924 INFO L225 Difference]: With dead ends: 684 [2021-10-06 21:01:33,924 INFO L226 Difference]: Without dead ends: 676 [2021-10-06 21:01:33,924 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1380.2ms TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:01:33,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-10-06 21:01:33,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 576. [2021-10-06 21:01:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 3.3704347826086956) internal successors, (1938), 575 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:33,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 1938 transitions. [2021-10-06 21:01:33,934 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 1938 transitions. Word has length 18 [2021-10-06 21:01:33,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:33,934 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 1938 transitions. [2021-10-06 21:01:33,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:33,934 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 1938 transitions. [2021-10-06 21:01:33,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:01:33,935 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:33,936 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:33,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:34,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:34,137 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:01:34,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:34,137 INFO L82 PathProgramCache]: Analyzing trace with hash -2007715390, now seen corresponding path program 76 times [2021-10-06 21:01:34,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:34,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645943437] [2021-10-06 21:01:34,138 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:01:34,139 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:34,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:34,140 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:34,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2021-10-06 21:01:34,865 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:01:34,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:34,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:01:34,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:35,021 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:35,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:35,399 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:35,400 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:35,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645943437] [2021-10-06 21:01:35,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645943437] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:35,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:35,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:01:35,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512685820] [2021-10-06 21:01:35,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:01:35,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:35,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:01:35,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:01:35,402 INFO L87 Difference]: Start difference. First operand 576 states and 1938 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:37,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:37,522 INFO L93 Difference]: Finished difference Result 744 states and 2337 transitions. [2021-10-06 21:01:37,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-06 21:01:37,523 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:01:37,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:37,525 INFO L225 Difference]: With dead ends: 744 [2021-10-06 21:01:37,525 INFO L226 Difference]: Without dead ends: 736 [2021-10-06 21:01:37,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1457.8ms TimeCoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2021-10-06 21:01:37,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-10-06 21:01:37,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 586. [2021-10-06 21:01:37,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 3.3794871794871795) internal successors, (1977), 585 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:37,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1977 transitions. [2021-10-06 21:01:37,540 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1977 transitions. Word has length 18 [2021-10-06 21:01:37,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:37,540 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 1977 transitions. [2021-10-06 21:01:37,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:37,540 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1977 transitions. [2021-10-06 21:01:37,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:01:37,542 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:37,542 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:37,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:37,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:37,743 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:01:37,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:37,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1204315224, now seen corresponding path program 77 times [2021-10-06 21:01:37,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:37,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699441987] [2021-10-06 21:01:37,745 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:01:37,745 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:37,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:37,746 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:37,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2021-10-06 21:01:38,484 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:01:38,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:38,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:01:38,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:38,654 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:38,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:39,099 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:39,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:39,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699441987] [2021-10-06 21:01:39,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699441987] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:39,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:39,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:01:39,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106520474] [2021-10-06 21:01:39,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:01:39,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:39,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:01:39,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:01:39,101 INFO L87 Difference]: Start difference. First operand 586 states and 1977 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:48,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:48,655 INFO L93 Difference]: Finished difference Result 1020 states and 2984 transitions. [2021-10-06 21:01:48,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-06 21:01:48,656 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:01:48,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:48,658 INFO L225 Difference]: With dead ends: 1020 [2021-10-06 21:01:48,658 INFO L226 Difference]: Without dead ends: 1018 [2021-10-06 21:01:48,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 6621.8ms TimeCoverageRelationStatistics Valid=671, Invalid=2635, Unknown=0, NotChecked=0, Total=3306 [2021-10-06 21:01:48,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2021-10-06 21:01:48,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 666. [2021-10-06 21:01:48,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 3.4511278195488724) internal successors, (2295), 665 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:48,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 2295 transitions. [2021-10-06 21:01:48,678 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 2295 transitions. Word has length 18 [2021-10-06 21:01:48,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:48,678 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 2295 transitions. [2021-10-06 21:01:48,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:48,678 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 2295 transitions. [2021-10-06 21:01:48,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:01:48,680 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:48,680 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:48,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Ended with exit code 0 [2021-10-06 21:01:48,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:48,881 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:01:48,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:48,881 INFO L82 PathProgramCache]: Analyzing trace with hash 626103398, now seen corresponding path program 78 times [2021-10-06 21:01:48,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:48,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967848690] [2021-10-06 21:01:48,882 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:01:48,883 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:48,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:48,884 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:48,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2021-10-06 21:01:49,709 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:01:49,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:49,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:01:49,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:49,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:49,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:50,279 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:50,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:50,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967848690] [2021-10-06 21:01:50,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967848690] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:50,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:50,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:01:50,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905933360] [2021-10-06 21:01:50,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:01:50,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:50,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:01:50,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:01:50,282 INFO L87 Difference]: Start difference. First operand 666 states and 2295 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:52,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:52,842 INFO L93 Difference]: Finished difference Result 970 states and 2987 transitions. [2021-10-06 21:01:52,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:01:52,843 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:01:52,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:52,845 INFO L225 Difference]: With dead ends: 970 [2021-10-06 21:01:52,845 INFO L226 Difference]: Without dead ends: 970 [2021-10-06 21:01:52,845 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1969.1ms TimeCoverageRelationStatistics Valid=276, Invalid=780, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 21:01:52,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2021-10-06 21:01:52,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 688. [2021-10-06 21:01:52,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 687 states have (on average 3.475982532751092) internal successors, (2388), 687 states have internal predecessors, (2388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:52,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 2388 transitions. [2021-10-06 21:01:52,866 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 2388 transitions. Word has length 18 [2021-10-06 21:01:52,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:52,867 INFO L470 AbstractCegarLoop]: Abstraction has 688 states and 2388 transitions. [2021-10-06 21:01:52,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:52,867 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 2388 transitions. [2021-10-06 21:01:52,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:01:52,868 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:52,868 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:52,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Ended with exit code 0 [2021-10-06 21:01:53,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:53,070 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:01:53,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:53,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1364898752, now seen corresponding path program 79 times [2021-10-06 21:01:53,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:53,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593239157] [2021-10-06 21:01:53,071 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:01:53,072 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:53,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:53,073 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:53,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2021-10-06 21:01:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:53,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:01:53,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:53,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:54,356 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:54,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593239157] [2021-10-06 21:01:54,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593239157] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:54,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:54,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:01:54,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296588305] [2021-10-06 21:01:54,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:01:54,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:54,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:01:54,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:01:54,359 INFO L87 Difference]: Start difference. First operand 688 states and 2388 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:56,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:56,025 INFO L93 Difference]: Finished difference Result 840 states and 2814 transitions. [2021-10-06 21:01:56,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-06 21:01:56,026 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:01:56,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:56,028 INFO L225 Difference]: With dead ends: 840 [2021-10-06 21:01:56,028 INFO L226 Difference]: Without dead ends: 828 [2021-10-06 21:01:56,028 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1171.5ms TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2021-10-06 21:01:56,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-10-06 21:01:56,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 724. [2021-10-06 21:01:56,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 723 states have (on average 3.5131396957123098) internal successors, (2540), 723 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:56,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 2540 transitions. [2021-10-06 21:01:56,042 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 2540 transitions. Word has length 18 [2021-10-06 21:01:56,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:56,042 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 2540 transitions. [2021-10-06 21:01:56,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:56,042 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 2540 transitions. [2021-10-06 21:01:56,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:01:56,044 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:56,044 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:56,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Ended with exit code 0 [2021-10-06 21:01:56,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:56,245 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:01:56,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:56,246 INFO L82 PathProgramCache]: Analyzing trace with hash 2017566692, now seen corresponding path program 80 times [2021-10-06 21:01:56,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:56,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169434092] [2021-10-06 21:01:56,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:01:56,247 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:56,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:56,249 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:56,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2021-10-06 21:01:57,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:01:57,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:57,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:01:57,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:57,240 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:57,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:57,754 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:57,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:57,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169434092] [2021-10-06 21:01:57,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169434092] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:57,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:57,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:01:57,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539016348] [2021-10-06 21:01:57,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:01:57,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:57,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:01:57,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:01:57,756 INFO L87 Difference]: Start difference. First operand 724 states and 2540 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:02,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:02,983 INFO L93 Difference]: Finished difference Result 958 states and 3097 transitions. [2021-10-06 21:02:02,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:02:02,984 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:02:02,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:02,986 INFO L225 Difference]: With dead ends: 958 [2021-10-06 21:02:02,986 INFO L226 Difference]: Without dead ends: 958 [2021-10-06 21:02:02,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 3663.6ms TimeCoverageRelationStatistics Valid=359, Invalid=1047, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:02:02,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-10-06 21:02:02,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 756. [2021-10-06 21:02:02,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 755 states have (on average 3.5443708609271525) internal successors, (2676), 755 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:03,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 2676 transitions. [2021-10-06 21:02:03,001 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 2676 transitions. Word has length 18 [2021-10-06 21:02:03,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:03,001 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 2676 transitions. [2021-10-06 21:02:03,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:03,002 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 2676 transitions. [2021-10-06 21:02:03,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:02:03,003 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:03,003 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:03,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:03,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:03,204 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:02:03,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:03,205 INFO L82 PathProgramCache]: Analyzing trace with hash 924510820, now seen corresponding path program 81 times [2021-10-06 21:02:03,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:03,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178846232] [2021-10-06 21:02:03,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:02:03,206 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:03,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:03,209 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:03,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2021-10-06 21:02:04,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:02:04,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:04,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:02:04,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:04,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:04,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:04,707 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:04,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178846232] [2021-10-06 21:02:04,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178846232] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:04,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:04,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-06 21:02:04,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311883636] [2021-10-06 21:02:04,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:02:04,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:04,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:02:04,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:02:04,709 INFO L87 Difference]: Start difference. First operand 756 states and 2676 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:07,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:07,992 INFO L93 Difference]: Finished difference Result 932 states and 3093 transitions. [2021-10-06 21:02:07,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-06 21:02:07,993 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:02:07,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:07,995 INFO L225 Difference]: With dead ends: 932 [2021-10-06 21:02:07,995 INFO L226 Difference]: Without dead ends: 924 [2021-10-06 21:02:07,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2238.0ms TimeCoverageRelationStatistics Valid=239, Invalid=1021, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:02:07,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-10-06 21:02:08,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 778. [2021-10-06 21:02:08,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 3.546975546975547) internal successors, (2756), 777 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 2756 transitions. [2021-10-06 21:02:08,010 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 2756 transitions. Word has length 18 [2021-10-06 21:02:08,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:08,011 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 2756 transitions. [2021-10-06 21:02:08,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:08,011 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 2756 transitions. [2021-10-06 21:02:08,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:02:08,013 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:08,013 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:08,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:08,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:08,227 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:02:08,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:08,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1591395774, now seen corresponding path program 82 times [2021-10-06 21:02:08,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:08,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658710666] [2021-10-06 21:02:08,228 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:02:08,229 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:08,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:08,230 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:08,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2021-10-06 21:02:08,989 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:02:08,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:08,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:02:08,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:09,175 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:09,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:09,602 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:09,602 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:09,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658710666] [2021-10-06 21:02:09,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658710666] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:09,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:09,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:02:09,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81661581] [2021-10-06 21:02:09,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:02:09,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:09,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:02:09,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:02:09,607 INFO L87 Difference]: Start difference. First operand 778 states and 2756 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:12,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:12,116 INFO L93 Difference]: Finished difference Result 1004 states and 3345 transitions. [2021-10-06 21:02:12,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 21:02:12,117 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:02:12,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:12,119 INFO L225 Difference]: With dead ends: 1004 [2021-10-06 21:02:12,119 INFO L226 Difference]: Without dead ends: 996 [2021-10-06 21:02:12,119 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1872.7ms TimeCoverageRelationStatistics Valid=246, Invalid=624, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:02:12,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-10-06 21:02:12,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 798. [2021-10-06 21:02:12,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 3.5533249686323716) internal successors, (2832), 797 states have internal predecessors, (2832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:12,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 2832 transitions. [2021-10-06 21:02:12,135 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 2832 transitions. Word has length 18 [2021-10-06 21:02:12,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:12,135 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 2832 transitions. [2021-10-06 21:02:12,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:12,136 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 2832 transitions. [2021-10-06 21:02:12,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:02:12,138 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:12,138 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:12,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:12,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:12,340 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:02:12,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:12,341 INFO L82 PathProgramCache]: Analyzing trace with hash -787995608, now seen corresponding path program 83 times [2021-10-06 21:02:12,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:12,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384880200] [2021-10-06 21:02:12,341 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:02:12,342 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:12,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:12,343 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:12,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2021-10-06 21:02:13,115 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:02:13,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:13,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:02:13,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:13,296 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:13,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:13,779 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:13,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384880200] [2021-10-06 21:02:13,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384880200] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:13,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:13,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:02:13,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934676610] [2021-10-06 21:02:13,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:02:13,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:13,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:02:13,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:02:13,781 INFO L87 Difference]: Start difference. First operand 798 states and 2832 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:20,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:20,253 INFO L93 Difference]: Finished difference Result 1226 states and 3835 transitions. [2021-10-06 21:02:20,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-06 21:02:20,255 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:02:20,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:20,258 INFO L225 Difference]: With dead ends: 1226 [2021-10-06 21:02:20,258 INFO L226 Difference]: Without dead ends: 1224 [2021-10-06 21:02:20,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 3867.0ms TimeCoverageRelationStatistics Valid=483, Invalid=1679, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:02:20,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2021-10-06 21:02:20,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 876. [2021-10-06 21:02:20,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 3.601142857142857) internal successors, (3151), 875 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:20,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 3151 transitions. [2021-10-06 21:02:20,288 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 3151 transitions. Word has length 18 [2021-10-06 21:02:20,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:20,288 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 3151 transitions. [2021-10-06 21:02:20,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:20,288 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 3151 transitions. [2021-10-06 21:02:20,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:02:20,290 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:20,290 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:20,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Ended with exit code 0 [2021-10-06 21:02:20,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:20,491 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:02:20,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:20,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1042423014, now seen corresponding path program 84 times [2021-10-06 21:02:20,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:20,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227564389] [2021-10-06 21:02:20,493 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:02:20,493 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:20,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:20,495 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:20,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2021-10-06 21:02:21,343 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:02:21,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:21,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:02:21,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:21,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:21,752 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:21,753 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:21,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227564389] [2021-10-06 21:02:21,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227564389] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:21,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:21,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:02:21,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371668456] [2021-10-06 21:02:21,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:02:21,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:21,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:02:21,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:02:21,754 INFO L87 Difference]: Start difference. First operand 876 states and 3151 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:23,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:23,484 INFO L93 Difference]: Finished difference Result 1254 states and 4052 transitions. [2021-10-06 21:02:23,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:02:23,484 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:02:23,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:23,487 INFO L225 Difference]: With dead ends: 1254 [2021-10-06 21:02:23,487 INFO L226 Difference]: Without dead ends: 1254 [2021-10-06 21:02:23,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1059.6ms TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2021-10-06 21:02:23,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2021-10-06 21:02:23,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 900. [2021-10-06 21:02:23,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 899 states have (on average 3.6162402669632927) internal successors, (3251), 899 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:23,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 3251 transitions. [2021-10-06 21:02:23,505 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 3251 transitions. Word has length 18 [2021-10-06 21:02:23,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:23,506 INFO L470 AbstractCegarLoop]: Abstraction has 900 states and 3251 transitions. [2021-10-06 21:02:23,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:23,506 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 3251 transitions. [2021-10-06 21:02:23,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:02:23,507 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:23,508 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:23,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (102)] Ended with exit code 0 [2021-10-06 21:02:23,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:23,708 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:02:23,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:23,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1177362556, now seen corresponding path program 85 times [2021-10-06 21:02:23,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:23,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874350559] [2021-10-06 21:02:23,710 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:02:23,710 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:23,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:23,711 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:23,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2021-10-06 21:02:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:24,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:02:24,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:24,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:25,222 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:25,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874350559] [2021-10-06 21:02:25,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874350559] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:25,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:25,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:02:25,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618542646] [2021-10-06 21:02:25,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:02:25,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:25,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:02:25,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:02:25,224 INFO L87 Difference]: Start difference. First operand 900 states and 3251 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:28,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:28,829 INFO L93 Difference]: Finished difference Result 1106 states and 3694 transitions. [2021-10-06 21:02:28,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-06 21:02:28,829 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:02:28,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:28,832 INFO L225 Difference]: With dead ends: 1106 [2021-10-06 21:02:28,832 INFO L226 Difference]: Without dead ends: 1106 [2021-10-06 21:02:28,833 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 3150.4ms TimeCoverageRelationStatistics Valid=452, Invalid=1710, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:02:28,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2021-10-06 21:02:28,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 930. [2021-10-06 21:02:28,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 929 states have (on average 3.6254036598493005) internal successors, (3368), 929 states have internal predecessors, (3368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:28,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 3368 transitions. [2021-10-06 21:02:28,860 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 3368 transitions. Word has length 18 [2021-10-06 21:02:28,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:28,860 INFO L470 AbstractCegarLoop]: Abstraction has 930 states and 3368 transitions. [2021-10-06 21:02:28,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:28,860 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 3368 transitions. [2021-10-06 21:02:28,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:02:28,862 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:28,862 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:28,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (103)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:29,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:29,063 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:02:29,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:29,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1986709182, now seen corresponding path program 86 times [2021-10-06 21:02:29,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:29,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095917157] [2021-10-06 21:02:29,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:02:29,065 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:29,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:29,066 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:29,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (104)] Waiting until timeout for monitored process [2021-10-06 21:02:29,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:02:29,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:29,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:02:29,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:30,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:30,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:30,829 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:30,830 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:30,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095917157] [2021-10-06 21:02:30,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095917157] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:30,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:30,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-06 21:02:30,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703400257] [2021-10-06 21:02:30,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:02:30,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:30,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:02:30,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:02:30,831 INFO L87 Difference]: Start difference. First operand 930 states and 3368 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:35,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:35,599 INFO L93 Difference]: Finished difference Result 1118 states and 3814 transitions. [2021-10-06 21:02:35,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 21:02:35,600 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:02:35,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:35,602 INFO L225 Difference]: With dead ends: 1118 [2021-10-06 21:02:35,603 INFO L226 Difference]: Without dead ends: 1112 [2021-10-06 21:02:35,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 3684.0ms TimeCoverageRelationStatistics Valid=350, Invalid=1372, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:02:35,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2021-10-06 21:02:35,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 958. [2021-10-06 21:02:35,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 3.6300940438871474) internal successors, (3474), 957 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:35,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 3474 transitions. [2021-10-06 21:02:35,631 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 3474 transitions. Word has length 18 [2021-10-06 21:02:35,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:35,631 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 3474 transitions. [2021-10-06 21:02:35,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:35,631 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 3474 transitions. [2021-10-06 21:02:35,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:02:35,634 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:35,634 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:35,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (104)] Ended with exit code 0 [2021-10-06 21:02:35,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:35,851 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:02:35,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:35,851 INFO L82 PathProgramCache]: Analyzing trace with hash 591698346, now seen corresponding path program 87 times [2021-10-06 21:02:35,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:35,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600254614] [2021-10-06 21:02:35,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:02:35,852 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:35,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:35,853 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:35,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (105)] Waiting until timeout for monitored process [2021-10-06 21:02:36,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:02:36,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:36,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:02:36,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:37,024 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:37,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:37,734 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:37,734 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:37,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [600254614] [2021-10-06 21:02:37,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [600254614] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:37,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:37,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-06 21:02:37,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279747442] [2021-10-06 21:02:37,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:02:37,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:37,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:02:37,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:02:37,739 INFO L87 Difference]: Start difference. First operand 958 states and 3474 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:46,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:46,154 INFO L93 Difference]: Finished difference Result 1378 states and 4404 transitions. [2021-10-06 21:02:46,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-06 21:02:46,155 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:02:46,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:46,157 INFO L225 Difference]: With dead ends: 1378 [2021-10-06 21:02:46,158 INFO L226 Difference]: Without dead ends: 1378 [2021-10-06 21:02:46,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 7209.7ms TimeCoverageRelationStatistics Valid=530, Invalid=2226, Unknown=0, NotChecked=0, Total=2756 [2021-10-06 21:02:46,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2021-10-06 21:02:46,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 984. [2021-10-06 21:02:46,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 983 states have (on average 3.636826042726348) internal successors, (3575), 983 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:46,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 3575 transitions. [2021-10-06 21:02:46,179 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 3575 transitions. Word has length 18 [2021-10-06 21:02:46,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:46,179 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 3575 transitions. [2021-10-06 21:02:46,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:46,179 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 3575 transitions. [2021-10-06 21:02:46,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:02:46,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:46,181 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:46,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (105)] Ended with exit code 0 [2021-10-06 21:02:46,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:46,383 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:02:46,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:46,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1218597832, now seen corresponding path program 88 times [2021-10-06 21:02:46,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:46,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180970133] [2021-10-06 21:02:46,384 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:02:46,384 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:46,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:46,386 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:46,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (106)] Waiting until timeout for monitored process [2021-10-06 21:02:47,208 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:02:47,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:47,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:02:47,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:47,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:47,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:47,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:47,865 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:47,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180970133] [2021-10-06 21:02:47,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180970133] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:47,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:47,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:02:47,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069954684] [2021-10-06 21:02:47,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:02:47,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:47,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:02:47,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:02:47,866 INFO L87 Difference]: Start difference. First operand 984 states and 3575 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:50,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:50,486 INFO L93 Difference]: Finished difference Result 1158 states and 3973 transitions. [2021-10-06 21:02:50,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 21:02:50,487 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:02:50,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:50,491 INFO L225 Difference]: With dead ends: 1158 [2021-10-06 21:02:50,491 INFO L226 Difference]: Without dead ends: 1146 [2021-10-06 21:02:50,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2077.6ms TimeCoverageRelationStatistics Valid=268, Invalid=788, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 21:02:50,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2021-10-06 21:02:50,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 996. [2021-10-06 21:02:50,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 995 states have (on average 3.637185929648241) internal successors, (3619), 995 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:50,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 3619 transitions. [2021-10-06 21:02:50,518 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 3619 transitions. Word has length 18 [2021-10-06 21:02:50,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:50,518 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 3619 transitions. [2021-10-06 21:02:50,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:50,518 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 3619 transitions. [2021-10-06 21:02:50,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:02:50,521 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:50,521 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:50,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (106)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:50,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:50,736 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:02:50,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:50,737 INFO L82 PathProgramCache]: Analyzing trace with hash -24144892, now seen corresponding path program 89 times [2021-10-06 21:02:50,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:50,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046181726] [2021-10-06 21:02:50,738 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:02:50,738 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:50,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:50,739 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:50,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (107)] Waiting until timeout for monitored process [2021-10-06 21:02:51,619 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:02:51,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:51,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:02:51,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:51,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:52,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:52,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046181726] [2021-10-06 21:02:52,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046181726] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:52,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:52,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:02:52,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883131047] [2021-10-06 21:02:52,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:02:52,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:52,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:02:52,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:02:52,181 INFO L87 Difference]: Start difference. First operand 996 states and 3619 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:53,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:53,165 INFO L93 Difference]: Finished difference Result 1056 states and 3742 transitions. [2021-10-06 21:02:53,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:02:53,166 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:02:53,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:53,168 INFO L225 Difference]: With dead ends: 1056 [2021-10-06 21:02:53,168 INFO L226 Difference]: Without dead ends: 1032 [2021-10-06 21:02:53,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 831.0ms TimeCoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:02:53,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2021-10-06 21:02:53,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 996. [2021-10-06 21:02:53,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 995 states have (on average 3.6331658291457285) internal successors, (3615), 995 states have internal predecessors, (3615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:53,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 3615 transitions. [2021-10-06 21:02:53,186 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 3615 transitions. Word has length 18 [2021-10-06 21:02:53,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:53,186 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 3615 transitions. [2021-10-06 21:02:53,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:53,186 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 3615 transitions. [2021-10-06 21:02:53,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:02:53,188 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:53,188 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:53,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (107)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:53,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:53,389 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:02:53,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:53,389 INFO L82 PathProgramCache]: Analyzing trace with hash 945517028, now seen corresponding path program 90 times [2021-10-06 21:02:53,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:53,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549026156] [2021-10-06 21:02:53,390 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:02:53,391 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:53,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:53,393 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:53,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (108)] Waiting until timeout for monitored process [2021-10-06 21:02:54,256 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:02:54,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:54,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:02:54,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:54,449 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:54,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:54,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:54,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549026156] [2021-10-06 21:02:54,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549026156] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:54,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:54,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:02:54,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115841733] [2021-10-06 21:02:54,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:02:54,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:54,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:02:54,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:02:54,920 INFO L87 Difference]: Start difference. First operand 996 states and 3615 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:57,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:57,450 INFO L93 Difference]: Finished difference Result 1136 states and 3916 transitions. [2021-10-06 21:02:57,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 21:02:57,451 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:02:57,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:57,453 INFO L225 Difference]: With dead ends: 1136 [2021-10-06 21:02:57,453 INFO L226 Difference]: Without dead ends: 1120 [2021-10-06 21:02:57,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1922.2ms TimeCoverageRelationStatistics Valid=215, Invalid=777, Unknown=0, NotChecked=0, Total=992 [2021-10-06 21:02:57,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2021-10-06 21:02:57,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 1008. [2021-10-06 21:02:57,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 1007 states have (on average 3.6395233366434954) internal successors, (3665), 1007 states have internal predecessors, (3665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:57,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 3665 transitions. [2021-10-06 21:02:57,472 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 3665 transitions. Word has length 18 [2021-10-06 21:02:57,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:57,472 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 3665 transitions. [2021-10-06 21:02:57,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:57,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 3665 transitions. [2021-10-06 21:02:57,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:02:57,474 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:57,474 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:57,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (108)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:57,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:57,675 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:02:57,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:57,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1570389566, now seen corresponding path program 91 times [2021-10-06 21:02:57,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:57,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693058668] [2021-10-06 21:02:57,677 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:02:57,677 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:57,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:57,678 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:57,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (109)] Waiting until timeout for monitored process [2021-10-06 21:02:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:58,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:02:58,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:58,678 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:58,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:59,020 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:59,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693058668] [2021-10-06 21:02:59,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693058668] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:59,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:59,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:02:59,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326243217] [2021-10-06 21:02:59,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:02:59,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:59,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:02:59,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:02:59,021 INFO L87 Difference]: Start difference. First operand 1008 states and 3665 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:01,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:01,469 INFO L93 Difference]: Finished difference Result 1178 states and 4191 transitions. [2021-10-06 21:03:01,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 21:03:01,470 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:03:01,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:01,472 INFO L225 Difference]: With dead ends: 1178 [2021-10-06 21:03:01,473 INFO L226 Difference]: Without dead ends: 1168 [2021-10-06 21:03:01,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1352.6ms TimeCoverageRelationStatistics Valid=250, Invalid=620, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:03:01,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2021-10-06 21:03:01,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1028. [2021-10-06 21:03:01,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1027 states have (on average 3.6445959104186954) internal successors, (3743), 1027 states have internal predecessors, (3743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:01,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 3743 transitions. [2021-10-06 21:03:01,491 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 3743 transitions. Word has length 18 [2021-10-06 21:03:01,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:01,492 INFO L470 AbstractCegarLoop]: Abstraction has 1028 states and 3743 transitions. [2021-10-06 21:03:01,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:01,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 3743 transitions. [2021-10-06 21:03:01,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:03:01,494 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:01,494 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:01,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (109)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:01,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:01,695 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:03:01,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:01,696 INFO L82 PathProgramCache]: Analyzing trace with hash -766989400, now seen corresponding path program 92 times [2021-10-06 21:03:01,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:01,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360511005] [2021-10-06 21:03:01,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:03:01,697 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:01,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:01,698 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:01,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (110)] Waiting until timeout for monitored process [2021-10-06 21:03:02,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:03:02,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:02,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:03:02,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:02,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:03,209 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:03,210 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:03,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360511005] [2021-10-06 21:03:03,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360511005] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:03,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:03,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:03:03,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217888687] [2021-10-06 21:03:03,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:03:03,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:03,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:03:03,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:03:03,212 INFO L87 Difference]: Start difference. First operand 1028 states and 3743 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:05,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:05,061 INFO L93 Difference]: Finished difference Result 1226 states and 4177 transitions. [2021-10-06 21:03:05,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-06 21:03:05,063 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:03:05,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:05,065 INFO L225 Difference]: With dead ends: 1226 [2021-10-06 21:03:05,065 INFO L226 Difference]: Without dead ends: 1226 [2021-10-06 21:03:05,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1317.3ms TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2021-10-06 21:03:05,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-10-06 21:03:05,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1040. [2021-10-06 21:03:05,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 1039 states have (on average 3.650625601539942) internal successors, (3793), 1039 states have internal predecessors, (3793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:05,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 3793 transitions. [2021-10-06 21:03:05,085 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 3793 transitions. Word has length 18 [2021-10-06 21:03:05,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:05,085 INFO L470 AbstractCegarLoop]: Abstraction has 1040 states and 3793 transitions. [2021-10-06 21:03:05,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:05,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 3793 transitions. [2021-10-06 21:03:05,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:03:05,087 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:05,087 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:05,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (110)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:05,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:05,288 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:03:05,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:05,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1008017962, now seen corresponding path program 93 times [2021-10-06 21:03:05,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:05,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213665365] [2021-10-06 21:03:05,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:03:05,290 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:05,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:05,292 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:05,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (111)] Waiting until timeout for monitored process [2021-10-06 21:03:06,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:03:06,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:06,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:03:06,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:06,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:07,028 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:07,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:07,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213665365] [2021-10-06 21:03:07,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213665365] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:07,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:07,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-06 21:03:07,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973561172] [2021-10-06 21:03:07,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:03:07,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:07,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:03:07,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:03:07,030 INFO L87 Difference]: Start difference. First operand 1040 states and 3793 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:13,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:13,032 INFO L93 Difference]: Finished difference Result 1260 states and 4294 transitions. [2021-10-06 21:03:13,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:03:13,034 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:03:13,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:13,037 INFO L225 Difference]: With dead ends: 1260 [2021-10-06 21:03:13,037 INFO L226 Difference]: Without dead ends: 1256 [2021-10-06 21:03:13,037 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 4836.4ms TimeCoverageRelationStatistics Valid=306, Invalid=954, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:03:13,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2021-10-06 21:03:13,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1054. [2021-10-06 21:03:13,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 1053 states have (on average 3.646723646723647) internal successors, (3840), 1053 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:13,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 3840 transitions. [2021-10-06 21:03:13,071 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 3840 transitions. Word has length 18 [2021-10-06 21:03:13,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:13,072 INFO L470 AbstractCegarLoop]: Abstraction has 1054 states and 3840 transitions. [2021-10-06 21:03:13,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:13,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 3840 transitions. [2021-10-06 21:03:13,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:03:13,074 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:13,074 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:13,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (111)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:13,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:13,275 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:03:13,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:13,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1625575398, now seen corresponding path program 94 times [2021-10-06 21:03:13,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:13,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896366662] [2021-10-06 21:03:13,276 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:03:13,277 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:13,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:13,278 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:13,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (112)] Waiting until timeout for monitored process [2021-10-06 21:03:14,122 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:03:14,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:14,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:03:14,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:14,325 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:14,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:14,886 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:14,887 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:14,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896366662] [2021-10-06 21:03:14,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896366662] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:14,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:14,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:03:14,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735857232] [2021-10-06 21:03:14,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:03:14,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:14,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:03:14,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:03:14,888 INFO L87 Difference]: Start difference. First operand 1054 states and 3840 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:19,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:19,483 INFO L93 Difference]: Finished difference Result 1302 states and 4432 transitions. [2021-10-06 21:03:19,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 21:03:19,484 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:03:19,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:19,489 INFO L225 Difference]: With dead ends: 1302 [2021-10-06 21:03:19,489 INFO L226 Difference]: Without dead ends: 1302 [2021-10-06 21:03:19,489 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 3765.9ms TimeCoverageRelationStatistics Valid=357, Invalid=1125, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 21:03:19,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2021-10-06 21:03:19,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1038. [2021-10-06 21:03:19,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 1037 states have (on average 3.639344262295082) internal successors, (3774), 1037 states have internal predecessors, (3774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:19,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 3774 transitions. [2021-10-06 21:03:19,530 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 3774 transitions. Word has length 18 [2021-10-06 21:03:19,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:19,531 INFO L470 AbstractCegarLoop]: Abstraction has 1038 states and 3774 transitions. [2021-10-06 21:03:19,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:19,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 3774 transitions. [2021-10-06 21:03:19,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:03:19,534 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:19,535 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:19,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (112)] Ended with exit code 0 [2021-10-06 21:03:19,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:19,750 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:03:19,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:19,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1543221610, now seen corresponding path program 95 times [2021-10-06 21:03:19,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:19,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931695159] [2021-10-06 21:03:19,751 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:03:19,752 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:19,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:19,753 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:19,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (113)] Waiting until timeout for monitored process [2021-10-06 21:03:20,612 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:03:20,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:20,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:03:20,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:20,793 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:20,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:21,038 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:21,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:21,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931695159] [2021-10-06 21:03:21,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931695159] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:21,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:21,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:03:21,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077843145] [2021-10-06 21:03:21,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:03:21,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:21,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:03:21,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:03:21,040 INFO L87 Difference]: Start difference. First operand 1038 states and 3774 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:21,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:21,598 INFO L93 Difference]: Finished difference Result 1186 states and 4177 transitions. [2021-10-06 21:03:21,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-06 21:03:21,600 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:03:21,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:21,603 INFO L225 Difference]: With dead ends: 1186 [2021-10-06 21:03:21,603 INFO L226 Difference]: Without dead ends: 1178 [2021-10-06 21:03:21,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 476.9ms TimeCoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:03:21,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2021-10-06 21:03:21,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1036. [2021-10-06 21:03:21,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1035 states have (on average 3.641545893719807) internal successors, (3769), 1035 states have internal predecessors, (3769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:21,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 3769 transitions. [2021-10-06 21:03:21,623 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 3769 transitions. Word has length 18 [2021-10-06 21:03:21,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:21,623 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 3769 transitions. [2021-10-06 21:03:21,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:21,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 3769 transitions. [2021-10-06 21:03:21,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:03:21,625 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:21,625 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:21,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (113)] Ended with exit code 0 [2021-10-06 21:03:21,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:21,826 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:03:21,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:21,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1616641954, now seen corresponding path program 96 times [2021-10-06 21:03:21,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:21,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697273499] [2021-10-06 21:03:21,827 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:03:21,828 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:21,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:21,829 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:21,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (114)] Waiting until timeout for monitored process [2021-10-06 21:03:22,818 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:03:22,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:22,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:03:22,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:22,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:23,387 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:23,388 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:23,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697273499] [2021-10-06 21:03:23,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697273499] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:23,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:23,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:03:23,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120698376] [2021-10-06 21:03:23,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:03:23,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:23,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:03:23,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:03:23,390 INFO L87 Difference]: Start difference. First operand 1036 states and 3769 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:24,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:24,966 INFO L93 Difference]: Finished difference Result 1682 states and 5893 transitions. [2021-10-06 21:03:24,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:03:24,967 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:03:24,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:24,971 INFO L225 Difference]: With dead ends: 1682 [2021-10-06 21:03:24,971 INFO L226 Difference]: Without dead ends: 1682 [2021-10-06 21:03:24,971 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1364.2ms TimeCoverageRelationStatistics Valid=365, Invalid=1041, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:03:24,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2021-10-06 21:03:24,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1034. [2021-10-06 21:03:24,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 3.641819941916747) internal successors, (3762), 1033 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:24,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 3762 transitions. [2021-10-06 21:03:24,994 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 3762 transitions. Word has length 18 [2021-10-06 21:03:24,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:24,994 INFO L470 AbstractCegarLoop]: Abstraction has 1034 states and 3762 transitions. [2021-10-06 21:03:24,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:24,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 3762 transitions. [2021-10-06 21:03:24,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:03:24,996 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:24,996 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:25,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (114)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:25,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:25,197 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:03:25,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:25,198 INFO L82 PathProgramCache]: Analyzing trace with hash -112357540, now seen corresponding path program 97 times [2021-10-06 21:03:25,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:25,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832854807] [2021-10-06 21:03:25,199 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:03:25,199 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:25,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:25,200 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:25,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (115)] Waiting until timeout for monitored process [2021-10-06 21:03:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:03:26,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:03:26,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:26,262 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:26,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:26,538 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:26,538 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:26,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832854807] [2021-10-06 21:03:26,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832854807] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:26,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:26,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:03:26,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667423742] [2021-10-06 21:03:26,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:03:26,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:26,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:03:26,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:03:26,540 INFO L87 Difference]: Start difference. First operand 1034 states and 3762 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:27,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:27,877 INFO L93 Difference]: Finished difference Result 1236 states and 4257 transitions. [2021-10-06 21:03:27,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:03:27,878 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:03:27,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:27,881 INFO L225 Difference]: With dead ends: 1236 [2021-10-06 21:03:27,881 INFO L226 Difference]: Without dead ends: 1230 [2021-10-06 21:03:27,881 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1073.5ms TimeCoverageRelationStatistics Valid=239, Invalid=951, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:03:27,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2021-10-06 21:03:27,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1046. [2021-10-06 21:03:27,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 1045 states have (on average 3.6363636363636362) internal successors, (3800), 1045 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:27,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 3800 transitions. [2021-10-06 21:03:27,900 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 3800 transitions. Word has length 18 [2021-10-06 21:03:27,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:27,900 INFO L470 AbstractCegarLoop]: Abstraction has 1046 states and 3800 transitions. [2021-10-06 21:03:27,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:27,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 3800 transitions. [2021-10-06 21:03:27,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:03:27,902 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:27,903 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:27,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (115)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:28,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:28,104 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:03:28,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:28,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1138911294, now seen corresponding path program 98 times [2021-10-06 21:03:28,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:28,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306869928] [2021-10-06 21:03:28,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:03:28,105 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:28,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:28,107 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:28,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (116)] Waiting until timeout for monitored process [2021-10-06 21:03:29,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:03:29,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:29,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:03:29,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:29,248 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:29,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:29,713 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:29,713 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:29,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306869928] [2021-10-06 21:03:29,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306869928] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:29,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:29,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:03:29,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614025887] [2021-10-06 21:03:29,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:03:29,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:29,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:03:29,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:03:29,715 INFO L87 Difference]: Start difference. First operand 1046 states and 3800 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:33,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:33,665 INFO L93 Difference]: Finished difference Result 1278 states and 4369 transitions. [2021-10-06 21:03:33,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:03:33,666 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:03:33,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:33,669 INFO L225 Difference]: With dead ends: 1278 [2021-10-06 21:03:33,669 INFO L226 Difference]: Without dead ends: 1278 [2021-10-06 21:03:33,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 3720.4ms TimeCoverageRelationStatistics Valid=288, Invalid=972, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:03:33,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2021-10-06 21:03:33,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1052. [2021-10-06 21:03:33,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1051 states have (on average 3.6355851569933395) internal successors, (3821), 1051 states have internal predecessors, (3821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:33,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 3821 transitions. [2021-10-06 21:03:33,691 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 3821 transitions. Word has length 18 [2021-10-06 21:03:33,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:33,691 INFO L470 AbstractCegarLoop]: Abstraction has 1052 states and 3821 transitions. [2021-10-06 21:03:33,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:33,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 3821 transitions. [2021-10-06 21:03:33,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:03:33,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:33,694 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:33,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (116)] Ended with exit code 0 [2021-10-06 21:03:33,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:33,895 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:03:33,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:33,896 INFO L82 PathProgramCache]: Analyzing trace with hash -458852924, now seen corresponding path program 99 times [2021-10-06 21:03:33,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:33,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [569003168] [2021-10-06 21:03:33,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:03:33,897 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:33,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:33,898 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:33,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (117)] Waiting until timeout for monitored process [2021-10-06 21:03:34,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:03:34,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:34,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:03:34,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:35,070 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:35,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:35,371 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:35,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [569003168] [2021-10-06 21:03:35,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [569003168] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:35,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:35,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:03:35,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821699921] [2021-10-06 21:03:35,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:03:35,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:35,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:03:35,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:03:35,373 INFO L87 Difference]: Start difference. First operand 1052 states and 3821 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:36,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:36,949 INFO L93 Difference]: Finished difference Result 1256 states and 4310 transitions. [2021-10-06 21:03:36,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:03:36,950 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:03:36,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:36,953 INFO L225 Difference]: With dead ends: 1256 [2021-10-06 21:03:36,953 INFO L226 Difference]: Without dead ends: 1252 [2021-10-06 21:03:36,953 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1084.6ms TimeCoverageRelationStatistics Valid=227, Invalid=895, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:03:36,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-10-06 21:03:36,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1052. [2021-10-06 21:03:36,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1051 states have (on average 3.6412940057088488) internal successors, (3827), 1051 states have internal predecessors, (3827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:36,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 3827 transitions. [2021-10-06 21:03:36,972 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 3827 transitions. Word has length 18 [2021-10-06 21:03:36,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:36,973 INFO L470 AbstractCegarLoop]: Abstraction has 1052 states and 3827 transitions. [2021-10-06 21:03:36,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:36,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 3827 transitions. [2021-10-06 21:03:36,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:03:36,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:36,975 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:36,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (117)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:37,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:37,176 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:03:37,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:37,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1323251554, now seen corresponding path program 100 times [2021-10-06 21:03:37,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:37,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967468958] [2021-10-06 21:03:37,177 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:03:37,177 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:37,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:37,179 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:37,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (118)] Waiting until timeout for monitored process [2021-10-06 21:03:38,101 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:03:38,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:38,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:03:38,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:38,289 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:38,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:38,832 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:38,832 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:38,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967468958] [2021-10-06 21:03:38,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967468958] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:38,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:38,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:03:38,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863241208] [2021-10-06 21:03:38,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:03:38,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:38,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:03:38,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:03:38,835 INFO L87 Difference]: Start difference. First operand 1052 states and 3827 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:42,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:42,964 INFO L93 Difference]: Finished difference Result 1294 states and 4417 transitions. [2021-10-06 21:03:42,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 21:03:42,966 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:03:42,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:42,968 INFO L225 Difference]: With dead ends: 1294 [2021-10-06 21:03:42,969 INFO L226 Difference]: Without dead ends: 1294 [2021-10-06 21:03:42,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 3960.7ms TimeCoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:03:42,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-10-06 21:03:42,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1056. [2021-10-06 21:03:42,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1055 states have (on average 3.6388625592417063) internal successors, (3839), 1055 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:42,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 3839 transitions. [2021-10-06 21:03:42,989 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 3839 transitions. Word has length 18 [2021-10-06 21:03:42,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:42,989 INFO L470 AbstractCegarLoop]: Abstraction has 1056 states and 3839 transitions. [2021-10-06 21:03:42,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:42,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 3839 transitions. [2021-10-06 21:03:42,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:03:42,999 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:42,999 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:43,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (118)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:43,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:43,200 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:03:43,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:43,201 INFO L82 PathProgramCache]: Analyzing trace with hash -2132598180, now seen corresponding path program 101 times [2021-10-06 21:03:43,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:43,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901749681] [2021-10-06 21:03:43,202 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:03:43,202 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:43,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:43,203 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:43,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (119)] Waiting until timeout for monitored process [2021-10-06 21:03:44,121 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:03:44,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:44,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:03:44,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:44,262 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:44,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:44,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:44,506 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:44,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901749681] [2021-10-06 21:03:44,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901749681] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:44,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:44,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:03:44,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094598539] [2021-10-06 21:03:44,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:03:44,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:44,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:03:44,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:03:44,508 INFO L87 Difference]: Start difference. First operand 1056 states and 3839 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:46,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:46,099 INFO L93 Difference]: Finished difference Result 1324 states and 4454 transitions. [2021-10-06 21:03:46,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-06 21:03:46,100 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:03:46,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:46,104 INFO L225 Difference]: With dead ends: 1324 [2021-10-06 21:03:46,104 INFO L226 Difference]: Without dead ends: 1318 [2021-10-06 21:03:46,104 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 882.5ms TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:03:46,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2021-10-06 21:03:46,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1056. [2021-10-06 21:03:46,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1055 states have (on average 3.6350710900473935) internal successors, (3835), 1055 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:46,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 3835 transitions. [2021-10-06 21:03:46,125 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 3835 transitions. Word has length 18 [2021-10-06 21:03:46,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:46,125 INFO L470 AbstractCegarLoop]: Abstraction has 1056 states and 3835 transitions. [2021-10-06 21:03:46,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:46,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 3835 transitions. [2021-10-06 21:03:46,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:03:46,127 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:46,127 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:46,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (119)] Ended with exit code 0 [2021-10-06 21:03:46,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:46,328 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:03:46,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:46,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1329198014, now seen corresponding path program 102 times [2021-10-06 21:03:46,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:46,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900987765] [2021-10-06 21:03:46,330 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:03:46,330 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:46,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:46,331 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:46,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (120)] Waiting until timeout for monitored process [2021-10-06 21:03:47,384 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:03:47,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:47,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:03:47,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:47,585 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:47,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:48,090 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:48,090 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:48,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900987765] [2021-10-06 21:03:48,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900987765] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:48,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:48,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:03:48,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308360710] [2021-10-06 21:03:48,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:03:48,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:48,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:03:48,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:03:48,092 INFO L87 Difference]: Start difference. First operand 1056 states and 3835 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:50,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:50,937 INFO L93 Difference]: Finished difference Result 1310 states and 4474 transitions. [2021-10-06 21:03:50,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 21:03:50,938 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:03:50,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:50,940 INFO L225 Difference]: With dead ends: 1310 [2021-10-06 21:03:50,940 INFO L226 Difference]: Without dead ends: 1308 [2021-10-06 21:03:50,941 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 2581.2ms TimeCoverageRelationStatistics Valid=296, Invalid=964, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:03:50,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2021-10-06 21:03:50,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1064. [2021-10-06 21:03:50,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 1063 states have (on average 3.6359360301034807) internal successors, (3865), 1063 states have internal predecessors, (3865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:50,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 3865 transitions. [2021-10-06 21:03:50,962 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 3865 transitions. Word has length 18 [2021-10-06 21:03:50,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:50,962 INFO L470 AbstractCegarLoop]: Abstraction has 1064 states and 3865 transitions. [2021-10-06 21:03:50,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:50,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 3865 transitions. [2021-10-06 21:03:50,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:03:50,964 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:50,964 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:50,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (120)] Ended with exit code 0 [2021-10-06 21:03:51,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:51,165 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:03:51,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:51,166 INFO L82 PathProgramCache]: Analyzing trace with hash 501220608, now seen corresponding path program 103 times [2021-10-06 21:03:51,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:51,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665239346] [2021-10-06 21:03:51,167 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:03:51,167 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:51,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:51,169 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:51,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (121)] Waiting until timeout for monitored process [2021-10-06 21:03:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:03:52,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:03:52,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:52,288 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:52,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:52,682 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:52,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665239346] [2021-10-06 21:03:52,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665239346] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:52,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:52,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:03:52,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446752558] [2021-10-06 21:03:52,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:03:52,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:52,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:03:52,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:03:52,685 INFO L87 Difference]: Start difference. First operand 1064 states and 3865 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:56,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:56,776 INFO L93 Difference]: Finished difference Result 2144 states and 7307 transitions. [2021-10-06 21:03:56,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-06 21:03:56,777 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:03:56,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:56,781 INFO L225 Difference]: With dead ends: 2144 [2021-10-06 21:03:56,782 INFO L226 Difference]: Without dead ends: 2144 [2021-10-06 21:03:56,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 3180.2ms TimeCoverageRelationStatistics Valid=537, Invalid=2433, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 21:03:56,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2021-10-06 21:03:56,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1086. [2021-10-06 21:03:56,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1085 states have (on average 3.6423963133640553) internal successors, (3952), 1085 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:56,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 3952 transitions. [2021-10-06 21:03:56,816 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 3952 transitions. Word has length 18 [2021-10-06 21:03:56,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:56,816 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 3952 transitions. [2021-10-06 21:03:56,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:56,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 3952 transitions. [2021-10-06 21:03:56,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:03:56,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:56,818 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:56,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (121)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:57,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:57,020 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:03:57,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:57,020 INFO L82 PathProgramCache]: Analyzing trace with hash -826997114, now seen corresponding path program 104 times [2021-10-06 21:03:57,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:57,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353567908] [2021-10-06 21:03:57,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:03:57,022 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:57,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:57,023 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:57,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (122)] Waiting until timeout for monitored process [2021-10-06 21:03:58,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:03:58,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:58,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:03:58,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:58,178 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:58,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:58,464 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:58,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:58,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353567908] [2021-10-06 21:03:58,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353567908] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:58,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:58,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:03:58,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632644039] [2021-10-06 21:03:58,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:03:58,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:58,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:03:58,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:03:58,466 INFO L87 Difference]: Start difference. First operand 1086 states and 3952 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:59,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:59,663 INFO L93 Difference]: Finished difference Result 1188 states and 4165 transitions. [2021-10-06 21:03:59,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:03:59,664 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:03:59,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:59,667 INFO L225 Difference]: With dead ends: 1188 [2021-10-06 21:03:59,667 INFO L226 Difference]: Without dead ends: 1182 [2021-10-06 21:03:59,668 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 848.5ms TimeCoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2021-10-06 21:03:59,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2021-10-06 21:03:59,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1096. [2021-10-06 21:03:59,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1096 states, 1095 states have (on average 3.6356164383561644) internal successors, (3981), 1095 states have internal predecessors, (3981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:59,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 3981 transitions. [2021-10-06 21:03:59,686 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 3981 transitions. Word has length 18 [2021-10-06 21:03:59,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:59,686 INFO L470 AbstractCegarLoop]: Abstraction has 1096 states and 3981 transitions. [2021-10-06 21:03:59,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:59,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 3981 transitions. [2021-10-06 21:03:59,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:03:59,688 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:59,688 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:59,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (122)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:59,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:59,889 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:03:59,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:59,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1853550868, now seen corresponding path program 105 times [2021-10-06 21:03:59,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:59,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180929634] [2021-10-06 21:03:59,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:03:59,891 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:59,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:59,893 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:59,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (123)] Waiting until timeout for monitored process [2021-10-06 21:04:00,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:04:00,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:00,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:04:00,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:01,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:01,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:01,732 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:01,732 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:01,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180929634] [2021-10-06 21:04:01,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180929634] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:04:01,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:04:01,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:04:01,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979280723] [2021-10-06 21:04:01,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:04:01,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:01,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:04:01,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:04:01,734 INFO L87 Difference]: Start difference. First operand 1096 states and 3981 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:08,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:08,227 INFO L93 Difference]: Finished difference Result 1610 states and 5428 transitions. [2021-10-06 21:04:08,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-06 21:04:08,229 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:04:08,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:08,232 INFO L225 Difference]: With dead ends: 1610 [2021-10-06 21:04:08,232 INFO L226 Difference]: Without dead ends: 1602 [2021-10-06 21:04:08,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 5691.6ms TimeCoverageRelationStatistics Valid=832, Invalid=3458, Unknown=0, NotChecked=0, Total=4290 [2021-10-06 21:04:08,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2021-10-06 21:04:08,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1110. [2021-10-06 21:04:08,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 1109 states have (on average 3.619477006311993) internal successors, (4014), 1109 states have internal predecessors, (4014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:08,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 4014 transitions. [2021-10-06 21:04:08,256 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 4014 transitions. Word has length 18 [2021-10-06 21:04:08,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:08,256 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 4014 transitions. [2021-10-06 21:04:08,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:08,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 4014 transitions. [2021-10-06 21:04:08,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:04:08,259 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:08,259 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:08,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (123)] Ended with exit code 0 [2021-10-06 21:04:08,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 123 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:08,460 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:04:08,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:08,461 INFO L82 PathProgramCache]: Analyzing trace with hash 540516400, now seen corresponding path program 106 times [2021-10-06 21:04:08,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:08,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332286584] [2021-10-06 21:04:08,461 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:04:08,462 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:08,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:08,463 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:08,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (124)] Waiting until timeout for monitored process [2021-10-06 21:04:09,426 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:04:09,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:09,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:04:09,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:09,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:10,233 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:10,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332286584] [2021-10-06 21:04:10,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332286584] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:04:10,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:04:10,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:04:10,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653823353] [2021-10-06 21:04:10,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:04:10,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:10,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:04:10,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:04:10,235 INFO L87 Difference]: Start difference. First operand 1110 states and 4014 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:14,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:14,229 INFO L93 Difference]: Finished difference Result 1284 states and 4397 transitions. [2021-10-06 21:04:14,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:04:14,229 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:04:14,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:14,232 INFO L225 Difference]: With dead ends: 1284 [2021-10-06 21:04:14,232 INFO L226 Difference]: Without dead ends: 1284 [2021-10-06 21:04:14,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 3550.0ms TimeCoverageRelationStatistics Valid=346, Invalid=986, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:04:14,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2021-10-06 21:04:14,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1122. [2021-10-06 21:04:14,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 3.623550401427297) internal successors, (4062), 1121 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:14,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 4062 transitions. [2021-10-06 21:04:14,262 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 4062 transitions. Word has length 18 [2021-10-06 21:04:14,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:14,262 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 4062 transitions. [2021-10-06 21:04:14,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:14,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 4062 transitions. [2021-10-06 21:04:14,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:04:14,264 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:14,265 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:14,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (124)] Ended with exit code 0 [2021-10-06 21:04:14,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:14,466 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:04:14,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:14,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1447729542, now seen corresponding path program 107 times [2021-10-06 21:04:14,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:14,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949366583] [2021-10-06 21:04:14,468 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:04:14,468 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:14,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:14,469 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:14,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (125)] Waiting until timeout for monitored process [2021-10-06 21:04:15,444 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:04:15,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:15,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:04:15,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:15,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:15,866 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:15,866 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:15,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949366583] [2021-10-06 21:04:15,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949366583] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:04:15,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:04:15,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:04:15,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471446974] [2021-10-06 21:04:15,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:04:15,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:15,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:04:15,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:04:15,868 INFO L87 Difference]: Start difference. First operand 1122 states and 4062 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:18,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:18,915 INFO L93 Difference]: Finished difference Result 1356 states and 4594 transitions. [2021-10-06 21:04:18,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:04:18,916 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:04:18,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:18,919 INFO L225 Difference]: With dead ends: 1356 [2021-10-06 21:04:18,919 INFO L226 Difference]: Without dead ends: 1350 [2021-10-06 21:04:18,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1838.2ms TimeCoverageRelationStatistics Valid=266, Invalid=994, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:04:18,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2021-10-06 21:04:18,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1140. [2021-10-06 21:04:18,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1139 states have (on average 3.6286215978928884) internal successors, (4133), 1139 states have internal predecessors, (4133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:18,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 4133 transitions. [2021-10-06 21:04:18,940 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 4133 transitions. Word has length 18 [2021-10-06 21:04:18,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:18,941 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 4133 transitions. [2021-10-06 21:04:18,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:18,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 4133 transitions. [2021-10-06 21:04:18,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:04:18,943 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:18,943 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:18,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (125)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:19,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:19,144 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:04:19,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:19,145 INFO L82 PathProgramCache]: Analyzing trace with hash -2043837588, now seen corresponding path program 108 times [2021-10-06 21:04:19,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:19,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779026705] [2021-10-06 21:04:19,146 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:04:19,146 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:19,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:19,148 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:19,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (126)] Waiting until timeout for monitored process [2021-10-06 21:04:20,226 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:04:20,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:20,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:04:20,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:20,438 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:20,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:21,003 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:21,004 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:21,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779026705] [2021-10-06 21:04:21,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779026705] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:04:21,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:04:21,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:04:21,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068310803] [2021-10-06 21:04:21,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:04:21,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:21,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:04:21,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:04:21,006 INFO L87 Difference]: Start difference. First operand 1140 states and 4133 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:24,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:24,378 INFO L93 Difference]: Finished difference Result 1284 states and 4477 transitions. [2021-10-06 21:04:24,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:04:24,380 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:04:24,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:24,383 INFO L225 Difference]: With dead ends: 1284 [2021-10-06 21:04:24,384 INFO L226 Difference]: Without dead ends: 1282 [2021-10-06 21:04:24,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 2785.6ms TimeCoverageRelationStatistics Valid=283, Invalid=907, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:04:24,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2021-10-06 21:04:24,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1152. [2021-10-06 21:04:24,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1151 states have (on average 3.630755864465682) internal successors, (4179), 1151 states have internal predecessors, (4179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:24,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 4179 transitions. [2021-10-06 21:04:24,407 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 4179 transitions. Word has length 18 [2021-10-06 21:04:24,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:24,408 INFO L470 AbstractCegarLoop]: Abstraction has 1152 states and 4179 transitions. [2021-10-06 21:04:24,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:24,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 4179 transitions. [2021-10-06 21:04:24,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:04:24,410 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:24,410 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:24,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (126)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:24,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:24,625 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:04:24,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:24,626 INFO L82 PathProgramCache]: Analyzing trace with hash -213418966, now seen corresponding path program 109 times [2021-10-06 21:04:24,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:24,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15636793] [2021-10-06 21:04:24,627 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:04:24,628 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:24,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:24,629 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:24,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (127)] Waiting until timeout for monitored process [2021-10-06 21:04:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:04:25,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:04:25,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:25,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:25,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:26,291 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:26,292 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:26,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15636793] [2021-10-06 21:04:26,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15636793] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:04:26,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:04:26,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:04:26,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27278615] [2021-10-06 21:04:26,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:04:26,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:26,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:04:26,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:04:26,294 INFO L87 Difference]: Start difference. First operand 1152 states and 4179 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:31,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:31,468 INFO L93 Difference]: Finished difference Result 1566 states and 5078 transitions. [2021-10-06 21:04:31,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-06 21:04:31,469 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:04:31,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:31,472 INFO L225 Difference]: With dead ends: 1566 [2021-10-06 21:04:31,472 INFO L226 Difference]: Without dead ends: 1566 [2021-10-06 21:04:31,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 4273.4ms TimeCoverageRelationStatistics Valid=557, Invalid=2983, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 21:04:31,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2021-10-06 21:04:31,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1162. [2021-10-06 21:04:31,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1161 states have (on average 3.636520241171404) internal successors, (4222), 1161 states have internal predecessors, (4222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:31,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 4222 transitions. [2021-10-06 21:04:31,494 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 4222 transitions. Word has length 18 [2021-10-06 21:04:31,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:31,494 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 4222 transitions. [2021-10-06 21:04:31,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:31,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 4222 transitions. [2021-10-06 21:04:31,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:04:31,496 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:31,496 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:31,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (127)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:31,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:31,697 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:04:31,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:31,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1183990788, now seen corresponding path program 110 times [2021-10-06 21:04:31,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:31,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876404485] [2021-10-06 21:04:31,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:04:31,699 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:31,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:31,700 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:31,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (128)] Waiting until timeout for monitored process [2021-10-06 21:04:32,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:04:32,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:32,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:04:32,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:32,950 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:32,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:33,439 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:33,439 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:33,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876404485] [2021-10-06 21:04:33,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876404485] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:04:33,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:04:33,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:04:33,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690190571] [2021-10-06 21:04:33,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:04:33,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:33,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:04:33,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:04:33,441 INFO L87 Difference]: Start difference. First operand 1162 states and 4222 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:36,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:36,924 INFO L93 Difference]: Finished difference Result 1340 states and 4628 transitions. [2021-10-06 21:04:36,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 21:04:36,925 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:04:36,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:36,928 INFO L225 Difference]: With dead ends: 1340 [2021-10-06 21:04:36,928 INFO L226 Difference]: Without dead ends: 1340 [2021-10-06 21:04:36,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 2878.3ms TimeCoverageRelationStatistics Valid=348, Invalid=1134, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 21:04:36,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2021-10-06 21:04:36,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1172. [2021-10-06 21:04:36,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1171 states have (on average 3.6336464560204953) internal successors, (4255), 1171 states have internal predecessors, (4255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:36,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 4255 transitions. [2021-10-06 21:04:36,951 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 4255 transitions. Word has length 18 [2021-10-06 21:04:36,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:36,951 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 4255 transitions. [2021-10-06 21:04:36,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:36,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 4255 transitions. [2021-10-06 21:04:36,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:04:36,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:36,954 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:36,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (128)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:37,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:37,157 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:04:37,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:37,158 INFO L82 PathProgramCache]: Analyzing trace with hash 2090546180, now seen corresponding path program 111 times [2021-10-06 21:04:37,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:37,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875622716] [2021-10-06 21:04:37,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:04:37,160 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:37,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:37,161 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:37,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (129)] Waiting until timeout for monitored process [2021-10-06 21:04:38,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:04:38,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:38,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:04:38,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:38,416 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:38,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:38,923 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:38,924 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:38,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875622716] [2021-10-06 21:04:38,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875622716] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:04:38,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:04:38,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-06 21:04:38,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429502648] [2021-10-06 21:04:38,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:04:38,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:38,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:04:38,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:04:38,937 INFO L87 Difference]: Start difference. First operand 1172 states and 4255 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:41,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:41,745 INFO L93 Difference]: Finished difference Result 1310 states and 4581 transitions. [2021-10-06 21:04:41,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:04:41,747 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:04:41,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:41,751 INFO L225 Difference]: With dead ends: 1310 [2021-10-06 21:04:41,751 INFO L226 Difference]: Without dead ends: 1306 [2021-10-06 21:04:41,752 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 2373.4ms TimeCoverageRelationStatistics Valid=265, Invalid=857, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:04:41,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2021-10-06 21:04:41,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1180. [2021-10-06 21:04:41,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1179 states have (on average 3.6378286683630194) internal successors, (4289), 1179 states have internal predecessors, (4289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:41,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 4289 transitions. [2021-10-06 21:04:41,775 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 4289 transitions. Word has length 18 [2021-10-06 21:04:41,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:41,776 INFO L470 AbstractCegarLoop]: Abstraction has 1180 states and 4289 transitions. [2021-10-06 21:04:41,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:41,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 4289 transitions. [2021-10-06 21:04:41,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:04:41,778 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:41,778 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:41,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (129)] Ended with exit code 0 [2021-10-06 21:04:41,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:41,980 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:04:41,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:41,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1233455588, now seen corresponding path program 112 times [2021-10-06 21:04:41,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:41,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628070109] [2021-10-06 21:04:41,983 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:04:41,983 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:41,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:41,984 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:41,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (130)] Waiting until timeout for monitored process [2021-10-06 21:04:43,002 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:04:43,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:43,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:04:43,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:43,168 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:43,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:43,481 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:43,481 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:43,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628070109] [2021-10-06 21:04:43,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628070109] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:04:43,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:04:43,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:04:43,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519763055] [2021-10-06 21:04:43,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:04:43,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:43,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:04:43,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:04:43,483 INFO L87 Difference]: Start difference. First operand 1180 states and 4289 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:45,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:45,550 INFO L93 Difference]: Finished difference Result 1382 states and 4749 transitions. [2021-10-06 21:04:45,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:04:45,552 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:04:45,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:45,555 INFO L225 Difference]: With dead ends: 1382 [2021-10-06 21:04:45,555 INFO L226 Difference]: Without dead ends: 1382 [2021-10-06 21:04:45,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1664.6ms TimeCoverageRelationStatistics Valid=329, Invalid=861, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:04:45,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-10-06 21:04:45,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1202. [2021-10-06 21:04:45,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 1201 states have (on average 3.6386344712739382) internal successors, (4370), 1201 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:45,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 4370 transitions. [2021-10-06 21:04:45,587 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 4370 transitions. Word has length 18 [2021-10-06 21:04:45,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:45,587 INFO L470 AbstractCegarLoop]: Abstraction has 1202 states and 4370 transitions. [2021-10-06 21:04:45,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:45,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 4370 transitions. [2021-10-06 21:04:45,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:04:45,589 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:45,590 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:45,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (130)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:45,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:45,791 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:04:45,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:45,792 INFO L82 PathProgramCache]: Analyzing trace with hash 84988456, now seen corresponding path program 113 times [2021-10-06 21:04:45,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:45,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667800464] [2021-10-06 21:04:45,793 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:04:45,793 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:45,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:45,794 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:45,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (131)] Waiting until timeout for monitored process [2021-10-06 21:04:46,804 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:04:46,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:46,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:04:46,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:46,956 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:46,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:47,330 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:47,331 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:47,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667800464] [2021-10-06 21:04:47,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667800464] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:04:47,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:04:47,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:04:47,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317459271] [2021-10-06 21:04:47,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:04:47,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:47,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:04:47,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:04:47,333 INFO L87 Difference]: Start difference. First operand 1202 states and 4370 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:49,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:49,611 INFO L93 Difference]: Finished difference Result 1652 states and 5696 transitions. [2021-10-06 21:04:49,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 21:04:49,612 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:04:49,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:49,615 INFO L225 Difference]: With dead ends: 1652 [2021-10-06 21:04:49,615 INFO L226 Difference]: Without dead ends: 1628 [2021-10-06 21:04:49,616 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 1916.1ms TimeCoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:04:49,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2021-10-06 21:04:49,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1210. [2021-10-06 21:04:49,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 3.6377171215880892) internal successors, (4398), 1209 states have internal predecessors, (4398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:49,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 4398 transitions. [2021-10-06 21:04:49,650 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 4398 transitions. Word has length 18 [2021-10-06 21:04:49,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:49,650 INFO L470 AbstractCegarLoop]: Abstraction has 1210 states and 4398 transitions. [2021-10-06 21:04:49,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:49,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 4398 transitions. [2021-10-06 21:04:49,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:04:49,654 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:49,654 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:49,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (131)] Ended with exit code 0 [2021-10-06 21:04:49,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:49,868 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:04:49,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:49,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1864049158, now seen corresponding path program 114 times [2021-10-06 21:04:49,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:49,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048372978] [2021-10-06 21:04:49,869 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:04:49,869 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:49,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:49,871 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:49,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (132)] Waiting until timeout for monitored process [2021-10-06 21:04:50,963 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:04:50,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:50,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:04:50,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:51,149 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:51,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:51,444 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:51,445 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:51,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048372978] [2021-10-06 21:04:51,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048372978] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:04:51,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:04:51,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:04:51,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948264229] [2021-10-06 21:04:51,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:04:51,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:51,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:04:51,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:04:51,446 INFO L87 Difference]: Start difference. First operand 1210 states and 4398 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:53,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:53,268 INFO L93 Difference]: Finished difference Result 1338 states and 4681 transitions. [2021-10-06 21:04:53,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:04:53,269 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:04:53,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:53,273 INFO L225 Difference]: With dead ends: 1338 [2021-10-06 21:04:53,273 INFO L226 Difference]: Without dead ends: 1330 [2021-10-06 21:04:53,273 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1397.0ms TimeCoverageRelationStatistics Valid=237, Invalid=755, Unknown=0, NotChecked=0, Total=992 [2021-10-06 21:04:53,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-10-06 21:04:53,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1212. [2021-10-06 21:04:53,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1211 states have (on average 3.642444260941371) internal successors, (4411), 1211 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:53,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 4411 transitions. [2021-10-06 21:04:53,308 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 4411 transitions. Word has length 18 [2021-10-06 21:04:53,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:53,308 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 4411 transitions. [2021-10-06 21:04:53,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:53,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 4411 transitions. [2021-10-06 21:04:53,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:04:53,310 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:53,310 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:53,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (132)] Ended with exit code 0 [2021-10-06 21:04:53,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:53,511 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:04:53,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:53,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1627517972, now seen corresponding path program 115 times [2021-10-06 21:04:53,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:53,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175753584] [2021-10-06 21:04:53,513 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:04:53,513 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:53,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:53,515 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:53,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (133)] Waiting until timeout for monitored process [2021-10-06 21:04:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:04:54,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:04:54,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:54,726 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:54,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:55,191 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:55,191 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:55,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175753584] [2021-10-06 21:04:55,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1175753584] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:04:55,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:04:55,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:04:55,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979415821] [2021-10-06 21:04:55,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:04:55,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:55,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:04:55,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:04:55,193 INFO L87 Difference]: Start difference. First operand 1212 states and 4411 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:57,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:57,906 INFO L93 Difference]: Finished difference Result 1396 states and 4858 transitions. [2021-10-06 21:04:57,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 21:04:57,907 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:04:57,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:57,909 INFO L225 Difference]: With dead ends: 1396 [2021-10-06 21:04:57,910 INFO L226 Difference]: Without dead ends: 1394 [2021-10-06 21:04:57,910 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2304.5ms TimeCoverageRelationStatistics Valid=321, Invalid=1011, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:04:57,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2021-10-06 21:04:57,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1226. [2021-10-06 21:04:57,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 3.6440816326530614) internal successors, (4464), 1225 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:57,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 4464 transitions. [2021-10-06 21:04:57,932 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 4464 transitions. Word has length 18 [2021-10-06 21:04:57,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:57,932 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 4464 transitions. [2021-10-06 21:04:57,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:57,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 4464 transitions. [2021-10-06 21:04:57,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:04:57,934 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:57,934 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:57,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (133)] Ended with exit code 0 [2021-10-06 21:04:58,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:58,135 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:04:58,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:58,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1524362746, now seen corresponding path program 116 times [2021-10-06 21:04:58,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:58,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1978515010] [2021-10-06 21:04:58,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:04:58,137 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:58,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:58,138 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:58,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (134)] Waiting until timeout for monitored process [2021-10-06 21:04:59,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:04:59,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:59,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:04:59,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:59,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:59,633 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:59,633 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:59,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1978515010] [2021-10-06 21:04:59,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1978515010] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:04:59,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:04:59,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:04:59,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716730047] [2021-10-06 21:04:59,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:04:59,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:59,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:04:59,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:04:59,635 INFO L87 Difference]: Start difference. First operand 1226 states and 4464 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:00,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:00,707 INFO L93 Difference]: Finished difference Result 1372 states and 4762 transitions. [2021-10-06 21:05:00,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:05:00,708 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:05:00,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:00,710 INFO L225 Difference]: With dead ends: 1372 [2021-10-06 21:05:00,710 INFO L226 Difference]: Without dead ends: 1372 [2021-10-06 21:05:00,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 727.6ms TimeCoverageRelationStatistics Valid=173, Invalid=639, Unknown=0, NotChecked=0, Total=812 [2021-10-06 21:05:00,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2021-10-06 21:05:00,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1220. [2021-10-06 21:05:00,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1219 states have (on average 3.6447908121410992) internal successors, (4443), 1219 states have internal predecessors, (4443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:00,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 4443 transitions. [2021-10-06 21:05:00,732 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 4443 transitions. Word has length 18 [2021-10-06 21:05:00,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:00,732 INFO L470 AbstractCegarLoop]: Abstraction has 1220 states and 4443 transitions. [2021-10-06 21:05:00,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:00,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 4443 transitions. [2021-10-06 21:05:00,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:05:00,735 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:00,735 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:00,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (134)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:00,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:00,936 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:05:00,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:00,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1505987428, now seen corresponding path program 117 times [2021-10-06 21:05:00,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:00,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006764362] [2021-10-06 21:05:00,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:05:00,938 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:00,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:00,939 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:00,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (135)] Waiting until timeout for monitored process [2021-10-06 21:05:02,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:05:02,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:02,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:05:02,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:02,208 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:02,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:02,648 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:02,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006764362] [2021-10-06 21:05:02,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006764362] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:05:02,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:05:02,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:05:02,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889635453] [2021-10-06 21:05:02,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:05:02,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:02,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:05:02,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:05:02,651 INFO L87 Difference]: Start difference. First operand 1220 states and 4443 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:03,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:03,875 INFO L93 Difference]: Finished difference Result 1286 states and 4557 transitions. [2021-10-06 21:05:03,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-06 21:05:03,875 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:05:03,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:03,878 INFO L225 Difference]: With dead ends: 1286 [2021-10-06 21:05:03,878 INFO L226 Difference]: Without dead ends: 1274 [2021-10-06 21:05:03,878 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1088.5ms TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:05:03,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-10-06 21:05:03,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1222. [2021-10-06 21:05:03,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 3.6412776412776413) internal successors, (4446), 1221 states have internal predecessors, (4446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:03,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4446 transitions. [2021-10-06 21:05:03,917 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 4446 transitions. Word has length 18 [2021-10-06 21:05:03,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:03,917 INFO L470 AbstractCegarLoop]: Abstraction has 1222 states and 4446 transitions. [2021-10-06 21:05:03,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:03,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 4446 transitions. [2021-10-06 21:05:03,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:05:03,920 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:03,920 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:03,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (135)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:04,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:04,121 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:05:04,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:04,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1762426114, now seen corresponding path program 118 times [2021-10-06 21:05:04,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:04,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585567911] [2021-10-06 21:05:04,123 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:05:04,123 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:04,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:04,124 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:04,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (136)] Waiting until timeout for monitored process [2021-10-06 21:05:05,196 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:05:05,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:05,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:05:05,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:05,408 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:05,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:05,906 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:05,907 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:05,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585567911] [2021-10-06 21:05:05,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585567911] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:05:05,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:05:05,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:05:05,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657581283] [2021-10-06 21:05:05,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:05:05,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:05,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:05:05,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:05:05,908 INFO L87 Difference]: Start difference. First operand 1222 states and 4446 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:10,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:10,327 INFO L93 Difference]: Finished difference Result 1356 states and 4749 transitions. [2021-10-06 21:05:10,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 21:05:10,328 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:05:10,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:10,330 INFO L225 Difference]: With dead ends: 1356 [2021-10-06 21:05:10,331 INFO L226 Difference]: Without dead ends: 1356 [2021-10-06 21:05:10,331 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 3674.5ms TimeCoverageRelationStatistics Valid=357, Invalid=1125, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 21:05:10,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2021-10-06 21:05:10,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1226. [2021-10-06 21:05:10,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 3.6408163265306124) internal successors, (4460), 1225 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:10,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 4460 transitions. [2021-10-06 21:05:10,351 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 4460 transitions. Word has length 18 [2021-10-06 21:05:10,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:10,351 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 4460 transitions. [2021-10-06 21:05:10,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:10,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 4460 transitions. [2021-10-06 21:05:10,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:05:10,353 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:10,353 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:10,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (136)] Ended with exit code 0 [2021-10-06 21:05:10,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:10,554 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:05:10,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:10,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1852482812, now seen corresponding path program 119 times [2021-10-06 21:05:10,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:10,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722078493] [2021-10-06 21:05:10,555 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:05:10,556 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:10,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:10,558 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:10,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (137)] Waiting until timeout for monitored process [2021-10-06 21:05:11,638 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:05:11,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:11,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:05:11,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:11,795 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:11,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:12,229 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:12,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:12,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722078493] [2021-10-06 21:05:12,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722078493] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:05:12,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:05:12,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:05:12,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864677662] [2021-10-06 21:05:12,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:05:12,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:12,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:05:12,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:05:12,232 INFO L87 Difference]: Start difference. First operand 1226 states and 4460 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:15,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:15,332 INFO L93 Difference]: Finished difference Result 1378 states and 4746 transitions. [2021-10-06 21:05:15,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-06 21:05:15,333 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:05:15,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:15,336 INFO L225 Difference]: With dead ends: 1378 [2021-10-06 21:05:15,336 INFO L226 Difference]: Without dead ends: 1370 [2021-10-06 21:05:15,336 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2365.0ms TimeCoverageRelationStatistics Valid=248, Invalid=942, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:05:15,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2021-10-06 21:05:15,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1236. [2021-10-06 21:05:15,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 3.642914979757085) internal successors, (4499), 1235 states have internal predecessors, (4499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:15,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 4499 transitions. [2021-10-06 21:05:15,369 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 4499 transitions. Word has length 18 [2021-10-06 21:05:15,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:15,370 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 4499 transitions. [2021-10-06 21:05:15,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:15,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 4499 transitions. [2021-10-06 21:05:15,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:05:15,373 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:15,373 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:15,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (137)] Ended with exit code 0 [2021-10-06 21:05:15,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:15,588 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:05:15,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:15,589 INFO L82 PathProgramCache]: Analyzing trace with hash 768739228, now seen corresponding path program 120 times [2021-10-06 21:05:15,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:15,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115401839] [2021-10-06 21:05:15,589 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:05:15,589 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:15,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:15,591 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:15,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (138)] Waiting until timeout for monitored process [2021-10-06 21:05:16,710 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:05:16,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:16,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:05:16,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:16,871 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:16,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:17,234 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:17,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:17,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115401839] [2021-10-06 21:05:17,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115401839] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:05:17,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:05:17,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:05:17,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885502708] [2021-10-06 21:05:17,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:05:17,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:17,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:05:17,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:05:17,237 INFO L87 Difference]: Start difference. First operand 1236 states and 4499 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:21,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:21,102 INFO L93 Difference]: Finished difference Result 1442 states and 4947 transitions. [2021-10-06 21:05:21,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 21:05:21,104 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:05:21,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:21,106 INFO L225 Difference]: With dead ends: 1442 [2021-10-06 21:05:21,106 INFO L226 Difference]: Without dead ends: 1434 [2021-10-06 21:05:21,107 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 2283.0ms TimeCoverageRelationStatistics Valid=240, Invalid=752, Unknown=0, NotChecked=0, Total=992 [2021-10-06 21:05:21,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2021-10-06 21:05:21,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1244. [2021-10-06 21:05:21,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1243 states have (on average 3.6452131938857604) internal successors, (4531), 1243 states have internal predecessors, (4531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:21,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 4531 transitions. [2021-10-06 21:05:21,133 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 4531 transitions. Word has length 18 [2021-10-06 21:05:21,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:21,134 INFO L470 AbstractCegarLoop]: Abstraction has 1244 states and 4531 transitions. [2021-10-06 21:05:21,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:21,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 4531 transitions. [2021-10-06 21:05:21,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:05:21,137 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:21,137 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:21,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (138)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:21,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:21,351 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:05:21,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:21,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1572139394, now seen corresponding path program 121 times [2021-10-06 21:05:21,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:21,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130772013] [2021-10-06 21:05:21,352 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:05:21,353 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:21,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:21,354 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:21,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (139)] Waiting until timeout for monitored process [2021-10-06 21:05:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:05:22,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:05:22,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:22,633 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:22,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:23,202 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:23,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130772013] [2021-10-06 21:05:23,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130772013] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:05:23,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:05:23,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:05:23,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487944196] [2021-10-06 21:05:23,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:05:23,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:23,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:05:23,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:05:23,204 INFO L87 Difference]: Start difference. First operand 1244 states and 4531 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:28,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:28,876 INFO L93 Difference]: Finished difference Result 1404 states and 4885 transitions. [2021-10-06 21:05:28,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 21:05:28,877 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:05:28,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:28,880 INFO L225 Difference]: With dead ends: 1404 [2021-10-06 21:05:28,880 INFO L226 Difference]: Without dead ends: 1402 [2021-10-06 21:05:28,880 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 4367.5ms TimeCoverageRelationStatistics Valid=290, Invalid=900, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:05:28,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2021-10-06 21:05:28,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1252. [2021-10-06 21:05:28,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 3.6442845723421264) internal successors, (4559), 1251 states have internal predecessors, (4559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:28,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 4559 transitions. [2021-10-06 21:05:28,914 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 4559 transitions. Word has length 18 [2021-10-06 21:05:28,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:28,914 INFO L470 AbstractCegarLoop]: Abstraction has 1252 states and 4559 transitions. [2021-10-06 21:05:28,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:28,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 4559 transitions. [2021-10-06 21:05:28,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:05:28,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:28,917 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:28,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (139)] Ended with exit code 0 [2021-10-06 21:05:29,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:29,132 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:05:29,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:29,133 INFO L82 PathProgramCache]: Analyzing trace with hash -892409280, now seen corresponding path program 122 times [2021-10-06 21:05:29,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:29,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442703522] [2021-10-06 21:05:29,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:05:29,134 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:29,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:29,135 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:29,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (140)] Waiting until timeout for monitored process [2021-10-06 21:05:30,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:05:30,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:30,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:05:30,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:30,447 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:30,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:30,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:30,869 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:30,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442703522] [2021-10-06 21:05:30,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442703522] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:05:30,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:05:30,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:05:30,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442986343] [2021-10-06 21:05:30,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:05:30,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:30,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:05:30,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:05:30,871 INFO L87 Difference]: Start difference. First operand 1252 states and 4559 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:32,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:32,577 INFO L93 Difference]: Finished difference Result 1474 states and 5034 transitions. [2021-10-06 21:05:32,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-06 21:05:32,577 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:05:32,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:32,581 INFO L225 Difference]: With dead ends: 1474 [2021-10-06 21:05:32,581 INFO L226 Difference]: Without dead ends: 1474 [2021-10-06 21:05:32,581 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1300.9ms TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2021-10-06 21:05:32,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-10-06 21:05:32,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1252. [2021-10-06 21:05:32,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 3.6442845723421264) internal successors, (4559), 1251 states have internal predecessors, (4559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:32,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 4559 transitions. [2021-10-06 21:05:32,604 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 4559 transitions. Word has length 18 [2021-10-06 21:05:32,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:32,604 INFO L470 AbstractCegarLoop]: Abstraction has 1252 states and 4559 transitions. [2021-10-06 21:05:32,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:32,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 4559 transitions. [2021-10-06 21:05:32,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:05:32,609 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:32,609 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:32,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (140)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:32,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:32,823 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:05:32,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:32,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1411555866, now seen corresponding path program 123 times [2021-10-06 21:05:32,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:32,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419508968] [2021-10-06 21:05:32,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:05:32,824 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:32,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:32,826 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:32,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (141)] Waiting until timeout for monitored process [2021-10-06 21:05:33,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:05:33,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:33,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:05:33,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:34,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:34,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:34,746 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:34,746 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:34,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419508968] [2021-10-06 21:05:34,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419508968] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:05:34,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:05:34,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-06 21:05:34,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282527159] [2021-10-06 21:05:34,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:05:34,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:34,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:05:34,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:05:34,748 INFO L87 Difference]: Start difference. First operand 1252 states and 4559 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:38,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:38,615 INFO L93 Difference]: Finished difference Result 1408 states and 4944 transitions. [2021-10-06 21:05:38,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 21:05:38,616 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:05:38,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:38,619 INFO L225 Difference]: With dead ends: 1408 [2021-10-06 21:05:38,619 INFO L226 Difference]: Without dead ends: 1404 [2021-10-06 21:05:38,619 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 3090.5ms TimeCoverageRelationStatistics Valid=272, Invalid=918, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:05:38,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-10-06 21:05:38,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1274. [2021-10-06 21:05:38,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 3.6527886881382563) internal successors, (4650), 1273 states have internal predecessors, (4650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:38,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4650 transitions. [2021-10-06 21:05:38,654 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4650 transitions. Word has length 18 [2021-10-06 21:05:38,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:38,655 INFO L470 AbstractCegarLoop]: Abstraction has 1274 states and 4650 transitions. [2021-10-06 21:05:38,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:38,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4650 transitions. [2021-10-06 21:05:38,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:05:38,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:38,657 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:38,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (141)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:38,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:38,858 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:05:38,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:38,859 INFO L82 PathProgramCache]: Analyzing trace with hash 499054014, now seen corresponding path program 124 times [2021-10-06 21:05:38,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:38,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033243892] [2021-10-06 21:05:38,859 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:05:38,860 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:38,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:38,861 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:38,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (142)] Waiting until timeout for monitored process [2021-10-06 21:05:40,000 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:05:40,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:40,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:05:40,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:40,210 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:40,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:40,888 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:40,889 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:40,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033243892] [2021-10-06 21:05:40,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033243892] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:05:40,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:05:40,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:05:40,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836612467] [2021-10-06 21:05:40,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:05:40,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:40,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:05:40,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:05:40,891 INFO L87 Difference]: Start difference. First operand 1274 states and 4650 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:47,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:47,272 INFO L93 Difference]: Finished difference Result 1516 states and 5210 transitions. [2021-10-06 21:05:47,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 21:05:47,273 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:05:47,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:47,276 INFO L225 Difference]: With dead ends: 1516 [2021-10-06 21:05:47,276 INFO L226 Difference]: Without dead ends: 1516 [2021-10-06 21:05:47,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 4939.3ms TimeCoverageRelationStatistics Valid=443, Invalid=1279, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:05:47,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-10-06 21:05:47,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1300. [2021-10-06 21:05:47,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1299 states have (on average 3.663587374903772) internal successors, (4759), 1299 states have internal predecessors, (4759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:47,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 4759 transitions. [2021-10-06 21:05:47,302 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 4759 transitions. Word has length 18 [2021-10-06 21:05:47,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:47,303 INFO L470 AbstractCegarLoop]: Abstraction has 1300 states and 4759 transitions. [2021-10-06 21:05:47,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:47,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 4759 transitions. [2021-10-06 21:05:47,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:05:47,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:47,306 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:47,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (142)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:47,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:47,509 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:05:47,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:47,509 INFO L82 PathProgramCache]: Analyzing trace with hash -594001858, now seen corresponding path program 125 times [2021-10-06 21:05:47,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:47,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971800323] [2021-10-06 21:05:47,510 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:05:47,510 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:47,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:47,512 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:47,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (143)] Waiting until timeout for monitored process [2021-10-06 21:05:48,602 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:05:48,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:48,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:05:48,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:48,757 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:48,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:49,105 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:49,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971800323] [2021-10-06 21:05:49,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971800323] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:05:49,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:05:49,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:05:49,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792825220] [2021-10-06 21:05:49,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:05:49,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:49,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:05:49,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:05:49,107 INFO L87 Difference]: Start difference. First operand 1300 states and 4759 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:51,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:51,859 INFO L93 Difference]: Finished difference Result 1410 states and 4987 transitions. [2021-10-06 21:05:51,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 21:05:51,860 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:05:51,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:51,863 INFO L225 Difference]: With dead ends: 1410 [2021-10-06 21:05:51,863 INFO L226 Difference]: Without dead ends: 1394 [2021-10-06 21:05:51,863 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1552.8ms TimeCoverageRelationStatistics Valid=278, Invalid=912, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:05:51,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2021-10-06 21:05:51,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1310. [2021-10-06 21:05:51,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1309 states have (on average 3.6653934300993125) internal successors, (4798), 1309 states have internal predecessors, (4798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:51,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 4798 transitions. [2021-10-06 21:05:51,888 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 4798 transitions. Word has length 18 [2021-10-06 21:05:51,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:51,888 INFO L470 AbstractCegarLoop]: Abstraction has 1310 states and 4798 transitions. [2021-10-06 21:05:51,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:51,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 4798 transitions. [2021-10-06 21:05:51,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:05:51,891 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:51,891 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:51,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (143)] Ended with exit code 0 [2021-10-06 21:05:52,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:52,092 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:05:52,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:52,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1185058844, now seen corresponding path program 126 times [2021-10-06 21:05:52,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:52,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286005940] [2021-10-06 21:05:52,093 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:05:52,094 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:52,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:52,096 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:52,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (144)] Waiting until timeout for monitored process [2021-10-06 21:05:53,265 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:05:53,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:53,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:05:53,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:53,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:53,799 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:53,800 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:53,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286005940] [2021-10-06 21:05:53,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286005940] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:05:53,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:05:53,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:05:53,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461585311] [2021-10-06 21:05:53,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:05:53,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:53,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:05:53,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:05:53,802 INFO L87 Difference]: Start difference. First operand 1310 states and 4798 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:56,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:56,631 INFO L93 Difference]: Finished difference Result 1470 states and 5190 transitions. [2021-10-06 21:05:56,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:05:56,632 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:05:56,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:56,635 INFO L225 Difference]: With dead ends: 1470 [2021-10-06 21:05:56,635 INFO L226 Difference]: Without dead ends: 1462 [2021-10-06 21:05:56,636 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1530.0ms TimeCoverageRelationStatistics Valid=255, Invalid=737, Unknown=0, NotChecked=0, Total=992 [2021-10-06 21:05:56,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2021-10-06 21:05:56,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1324. [2021-10-06 21:05:56,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1323 states have (on average 3.6651549508692365) internal successors, (4849), 1323 states have internal predecessors, (4849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:56,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 4849 transitions. [2021-10-06 21:05:56,660 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 4849 transitions. Word has length 18 [2021-10-06 21:05:56,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:56,660 INFO L470 AbstractCegarLoop]: Abstraction has 1324 states and 4849 transitions. [2021-10-06 21:05:56,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:56,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 4849 transitions. [2021-10-06 21:05:56,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:05:56,663 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:56,663 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:56,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (144)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:56,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:56,878 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:05:56,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:56,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1988459010, now seen corresponding path program 127 times [2021-10-06 21:05:56,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:56,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166345553] [2021-10-06 21:05:56,879 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:05:56,880 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:56,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:56,881 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:56,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (145)] Waiting until timeout for monitored process [2021-10-06 21:05:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:05:57,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:05:57,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:58,156 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:58,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:58,709 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:58,709 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:58,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166345553] [2021-10-06 21:05:58,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166345553] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:05:58,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:05:58,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:05:58,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893286281] [2021-10-06 21:05:58,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:05:58,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:58,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:05:58,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:05:58,711 INFO L87 Difference]: Start difference. First operand 1324 states and 4849 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:04,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:04,746 INFO L93 Difference]: Finished difference Result 1552 states and 5347 transitions. [2021-10-06 21:06:04,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:06:04,747 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:06:04,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:04,751 INFO L225 Difference]: With dead ends: 1552 [2021-10-06 21:06:04,751 INFO L226 Difference]: Without dead ends: 1550 [2021-10-06 21:06:04,752 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 4578.6ms TimeCoverageRelationStatistics Valid=426, Invalid=1380, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 21:06:04,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2021-10-06 21:06:04,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1338. [2021-10-06 21:06:04,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1337 states have (on average 3.6664173522812264) internal successors, (4902), 1337 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:04,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 4902 transitions. [2021-10-06 21:06:04,782 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 4902 transitions. Word has length 18 [2021-10-06 21:06:04,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:04,782 INFO L470 AbstractCegarLoop]: Abstraction has 1338 states and 4902 transitions. [2021-10-06 21:06:04,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:04,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 4902 transitions. [2021-10-06 21:06:04,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:06:04,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:04,787 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:04,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (145)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:05,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:05,001 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:06:05,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:05,001 INFO L82 PathProgramCache]: Analyzing trace with hash -476089664, now seen corresponding path program 128 times [2021-10-06 21:06:05,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:05,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928687764] [2021-10-06 21:06:05,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:06:05,002 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:05,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:05,004 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:05,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (146)] Waiting until timeout for monitored process [2021-10-06 21:06:06,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:06:06,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:06,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:06:06,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:06,310 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:06,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:06,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:06,791 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:06,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928687764] [2021-10-06 21:06:06,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1928687764] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:06:06,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:06:06,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:06:06,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246560140] [2021-10-06 21:06:06,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:06:06,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:06,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:06:06,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:06:06,793 INFO L87 Difference]: Start difference. First operand 1338 states and 4902 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:08,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:08,921 INFO L93 Difference]: Finished difference Result 1530 states and 5298 transitions. [2021-10-06 21:06:08,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:06:08,922 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:06:08,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:08,925 INFO L225 Difference]: With dead ends: 1530 [2021-10-06 21:06:08,925 INFO L226 Difference]: Without dead ends: 1530 [2021-10-06 21:06:08,926 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1856.1ms TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 21:06:08,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2021-10-06 21:06:08,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1340. [2021-10-06 21:06:08,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1339 states have (on average 3.664675130694548) internal successors, (4907), 1339 states have internal predecessors, (4907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:08,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 4907 transitions. [2021-10-06 21:06:08,950 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 4907 transitions. Word has length 18 [2021-10-06 21:06:08,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:08,950 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 4907 transitions. [2021-10-06 21:06:08,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:08,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 4907 transitions. [2021-10-06 21:06:08,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:06:08,953 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:08,953 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:08,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (146)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:09,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 146 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:09,154 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:06:09,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:09,155 INFO L82 PathProgramCache]: Analyzing trace with hash 2091614236, now seen corresponding path program 129 times [2021-10-06 21:06:09,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:09,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532762128] [2021-10-06 21:06:09,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:06:09,156 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:09,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:09,157 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:09,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (147)] Waiting until timeout for monitored process [2021-10-06 21:06:10,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:06:10,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:10,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:06:10,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:10,494 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:10,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:10,979 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:10,979 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:10,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532762128] [2021-10-06 21:06:10,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532762128] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:06:10,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:06:10,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:06:10,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608387379] [2021-10-06 21:06:10,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:06:10,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:10,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:06:10,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:06:10,981 INFO L87 Difference]: Start difference. First operand 1340 states and 4907 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:12,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:12,750 INFO L93 Difference]: Finished difference Result 1490 states and 5231 transitions. [2021-10-06 21:06:12,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:06:12,751 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:06:12,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:12,754 INFO L225 Difference]: With dead ends: 1490 [2021-10-06 21:06:12,755 INFO L226 Difference]: Without dead ends: 1490 [2021-10-06 21:06:12,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1412.3ms TimeCoverageRelationStatistics Valid=169, Invalid=643, Unknown=0, NotChecked=0, Total=812 [2021-10-06 21:06:12,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2021-10-06 21:06:12,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1344. [2021-10-06 21:06:12,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1343 states have (on average 3.6641846612062547) internal successors, (4921), 1343 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:12,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 4921 transitions. [2021-10-06 21:06:12,779 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 4921 transitions. Word has length 18 [2021-10-06 21:06:12,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:12,779 INFO L470 AbstractCegarLoop]: Abstraction has 1344 states and 4921 transitions. [2021-10-06 21:06:12,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:12,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 4921 transitions. [2021-10-06 21:06:12,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:06:12,783 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:12,783 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:12,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (147)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:12,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:12,998 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:06:12,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:12,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1831476604, now seen corresponding path program 130 times [2021-10-06 21:06:12,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:12,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348403563] [2021-10-06 21:06:12,999 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:06:12,999 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:13,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:13,001 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:13,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (148)] Waiting until timeout for monitored process [2021-10-06 21:06:14,152 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:06:14,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:14,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:06:14,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:14,297 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:14,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:14,685 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:14,686 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:14,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348403563] [2021-10-06 21:06:14,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348403563] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:06:14,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:06:14,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:06:14,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919719815] [2021-10-06 21:06:14,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:06:14,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:14,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:06:14,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:06:14,687 INFO L87 Difference]: Start difference. First operand 1344 states and 4921 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:16,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:16,837 INFO L93 Difference]: Finished difference Result 1454 states and 5134 transitions. [2021-10-06 21:06:16,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 21:06:16,838 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:06:16,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:16,841 INFO L225 Difference]: With dead ends: 1454 [2021-10-06 21:06:16,841 INFO L226 Difference]: Without dead ends: 1446 [2021-10-06 21:06:16,841 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1343.1ms TimeCoverageRelationStatistics Valid=214, Invalid=778, Unknown=0, NotChecked=0, Total=992 [2021-10-06 21:06:16,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-10-06 21:06:16,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1354. [2021-10-06 21:06:16,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.664449371766445) internal successors, (4958), 1353 states have internal predecessors, (4958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:16,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4958 transitions. [2021-10-06 21:06:16,865 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4958 transitions. Word has length 18 [2021-10-06 21:06:16,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:16,865 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4958 transitions. [2021-10-06 21:06:16,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:16,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4958 transitions. [2021-10-06 21:06:16,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:06:16,869 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:16,869 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:16,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (148)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:17,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:17,084 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:06:17,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:17,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1599092062, now seen corresponding path program 131 times [2021-10-06 21:06:17,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:17,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605081172] [2021-10-06 21:06:17,085 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:06:17,085 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:17,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:17,087 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:17,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (149)] Waiting until timeout for monitored process [2021-10-06 21:06:18,194 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:06:18,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:18,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:06:18,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:18,370 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:18,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:18,915 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:18,915 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:18,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605081172] [2021-10-06 21:06:18,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605081172] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:06:18,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:06:18,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:06:18,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809890944] [2021-10-06 21:06:18,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:06:18,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:18,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:06:18,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:06:18,917 INFO L87 Difference]: Start difference. First operand 1354 states and 4958 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:24,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:24,757 INFO L93 Difference]: Finished difference Result 1614 states and 5549 transitions. [2021-10-06 21:06:24,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:06:24,758 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:06:24,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:24,762 INFO L225 Difference]: With dead ends: 1614 [2021-10-06 21:06:24,762 INFO L226 Difference]: Without dead ends: 1614 [2021-10-06 21:06:24,762 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 4779.4ms TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:06:24,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2021-10-06 21:06:24,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1376. [2021-10-06 21:06:24,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1375 states have (on average 3.658909090909091) internal successors, (5031), 1375 states have internal predecessors, (5031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:24,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 5031 transitions. [2021-10-06 21:06:24,790 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 5031 transitions. Word has length 18 [2021-10-06 21:06:24,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:24,790 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 5031 transitions. [2021-10-06 21:06:24,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:24,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 5031 transitions. [2021-10-06 21:06:24,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:06:24,793 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:24,793 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:24,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (149)] Ended with exit code 0 [2021-10-06 21:06:24,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:24,994 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:06:24,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:24,994 INFO L82 PathProgramCache]: Analyzing trace with hash 789745436, now seen corresponding path program 132 times [2021-10-06 21:06:24,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:24,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776947716] [2021-10-06 21:06:24,995 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:06:24,995 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:24,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:24,997 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:24,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (150)] Waiting until timeout for monitored process [2021-10-06 21:06:26,233 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:06:26,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:26,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:06:26,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:26,402 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:26,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:27,182 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:27,183 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:27,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776947716] [2021-10-06 21:06:27,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776947716] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:06:27,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:06:27,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-06 21:06:27,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646973580] [2021-10-06 21:06:27,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:06:27,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:27,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:06:27,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:06:27,185 INFO L87 Difference]: Start difference. First operand 1376 states and 5031 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:48,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:48,929 INFO L93 Difference]: Finished difference Result 1740 states and 5833 transitions. [2021-10-06 21:06:48,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-10-06 21:06:48,931 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:06:48,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:48,935 INFO L225 Difference]: With dead ends: 1740 [2021-10-06 21:06:48,935 INFO L226 Difference]: Without dead ends: 1734 [2021-10-06 21:06:48,935 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1330 ImplicationChecksByTransitivity, 19122.1ms TimeCoverageRelationStatistics Valid=696, Invalid=3726, Unknown=0, NotChecked=0, Total=4422 [2021-10-06 21:06:48,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2021-10-06 21:06:48,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1428. [2021-10-06 21:06:48,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 3.6657323055360895) internal successors, (5231), 1427 states have internal predecessors, (5231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:48,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 5231 transitions. [2021-10-06 21:06:48,969 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 5231 transitions. Word has length 18 [2021-10-06 21:06:48,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:48,969 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 5231 transitions. [2021-10-06 21:06:48,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:48,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 5231 transitions. [2021-10-06 21:06:48,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:06:48,972 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:48,972 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:48,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (150)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:49,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:49,173 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:06:49,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:49,174 INFO L82 PathProgramCache]: Analyzing trace with hash -926814332, now seen corresponding path program 133 times [2021-10-06 21:06:49,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:49,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606111457] [2021-10-06 21:06:49,175 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:06:49,175 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:49,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:49,176 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:49,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (151)] Waiting until timeout for monitored process [2021-10-06 21:06:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:06:50,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:06:50,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:50,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:50,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:50,777 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:50,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606111457] [2021-10-06 21:06:50,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606111457] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:06:50,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:06:50,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:06:50,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953627821] [2021-10-06 21:06:50,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:06:50,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:50,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:06:50,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:06:50,779 INFO L87 Difference]: Start difference. First operand 1428 states and 5231 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:52,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:52,373 INFO L93 Difference]: Finished difference Result 1624 states and 5657 transitions. [2021-10-06 21:06:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 21:06:52,374 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:06:52,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:52,378 INFO L225 Difference]: With dead ends: 1624 [2021-10-06 21:06:52,378 INFO L226 Difference]: Without dead ends: 1624 [2021-10-06 21:06:52,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1086.5ms TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:06:52,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2021-10-06 21:06:52,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1442. [2021-10-06 21:06:52,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1441 states have (on average 3.6682859125607217) internal successors, (5286), 1441 states have internal predecessors, (5286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:52,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 5286 transitions. [2021-10-06 21:06:52,413 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 5286 transitions. Word has length 18 [2021-10-06 21:06:52,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:52,414 INFO L470 AbstractCegarLoop]: Abstraction has 1442 states and 5286 transitions. [2021-10-06 21:06:52,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:52,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 5286 transitions. [2021-10-06 21:06:52,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:06:52,416 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:52,416 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:52,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (151)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:52,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:52,620 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:06:52,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:52,621 INFO L82 PathProgramCache]: Analyzing trace with hash -299914846, now seen corresponding path program 134 times [2021-10-06 21:06:52,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:52,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583835710] [2021-10-06 21:06:52,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:06:52,622 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:52,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:52,623 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:52,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (152)] Waiting until timeout for monitored process [2021-10-06 21:06:53,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:06:53,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:53,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:06:53,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:53,978 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:53,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:54,399 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:54,399 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:54,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583835710] [2021-10-06 21:06:54,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583835710] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:06:54,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:06:54,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:06:54,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062033179] [2021-10-06 21:06:54,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:06:54,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:54,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:06:54,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:06:54,401 INFO L87 Difference]: Start difference. First operand 1442 states and 5286 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:56,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:56,330 INFO L93 Difference]: Finished difference Result 1622 states and 5686 transitions. [2021-10-06 21:06:56,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 21:06:56,331 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:06:56,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:56,335 INFO L225 Difference]: With dead ends: 1622 [2021-10-06 21:06:56,335 INFO L226 Difference]: Without dead ends: 1610 [2021-10-06 21:06:56,335 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1488.1ms TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:06:56,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2021-10-06 21:06:56,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1456. [2021-10-06 21:06:56,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.672164948453608) internal successors, (5343), 1455 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:56,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5343 transitions. [2021-10-06 21:06:56,360 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5343 transitions. Word has length 18 [2021-10-06 21:06:56,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:56,360 INFO L470 AbstractCegarLoop]: Abstraction has 1456 states and 5343 transitions. [2021-10-06 21:06:56,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:56,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5343 transitions. [2021-10-06 21:06:56,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:06:56,370 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:56,371 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:56,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (152)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:56,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:56,579 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:06:56,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:56,579 INFO L82 PathProgramCache]: Analyzing trace with hash 562590664, now seen corresponding path program 135 times [2021-10-06 21:06:56,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:56,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251480878] [2021-10-06 21:06:56,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:06:56,580 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:56,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:56,582 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:56,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (153)] Waiting until timeout for monitored process [2021-10-06 21:06:57,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:06:57,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:57,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:06:57,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:57,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:58,532 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:58,532 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:58,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251480878] [2021-10-06 21:06:58,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251480878] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:06:58,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:06:58,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-06 21:06:58,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781043016] [2021-10-06 21:06:58,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:06:58,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:58,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:06:58,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:06:58,537 INFO L87 Difference]: Start difference. First operand 1456 states and 5343 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:03,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:03,972 INFO L93 Difference]: Finished difference Result 1748 states and 5997 transitions. [2021-10-06 21:07:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 21:07:03,973 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:07:03,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:03,978 INFO L225 Difference]: With dead ends: 1748 [2021-10-06 21:07:03,978 INFO L226 Difference]: Without dead ends: 1748 [2021-10-06 21:07:03,978 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 4077.8ms TimeCoverageRelationStatistics Valid=315, Invalid=1017, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:07:03,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2021-10-06 21:07:04,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1494. [2021-10-06 21:07:04,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 3.683858004018754) internal successors, (5500), 1493 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:04,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 5500 transitions. [2021-10-06 21:07:04,021 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 5500 transitions. Word has length 18 [2021-10-06 21:07:04,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:04,021 INFO L470 AbstractCegarLoop]: Abstraction has 1494 states and 5500 transitions. [2021-10-06 21:07:04,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:04,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 5500 transitions. [2021-10-06 21:07:04,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:07:04,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:04,025 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:04,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (153)] Ended with exit code 0 [2021-10-06 21:07:04,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:04,239 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:07:04,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:04,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1542657570, now seen corresponding path program 136 times [2021-10-06 21:07:04,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:04,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586363009] [2021-10-06 21:07:04,240 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:07:04,240 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:04,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:04,242 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:04,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (154)] Waiting until timeout for monitored process [2021-10-06 21:07:05,443 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:07:05,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:05,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:07:05,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:05,602 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:05,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:05,951 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:05,951 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:05,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586363009] [2021-10-06 21:07:05,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [586363009] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:07:05,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:07:05,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:07:05,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668100126] [2021-10-06 21:07:05,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:07:05,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:05,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:07:05,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:07:05,953 INFO L87 Difference]: Start difference. First operand 1494 states and 5500 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:06,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:06,652 INFO L93 Difference]: Finished difference Result 1564 states and 5639 transitions. [2021-10-06 21:07:06,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:07:06,653 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:07:06,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:06,657 INFO L225 Difference]: With dead ends: 1564 [2021-10-06 21:07:06,657 INFO L226 Difference]: Without dead ends: 1540 [2021-10-06 21:07:06,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 685.0ms TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:07:06,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2021-10-06 21:07:06,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1494. [2021-10-06 21:07:06,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 3.681178834561286) internal successors, (5496), 1493 states have internal predecessors, (5496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:06,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 5496 transitions. [2021-10-06 21:07:06,683 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 5496 transitions. Word has length 18 [2021-10-06 21:07:06,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:06,683 INFO L470 AbstractCegarLoop]: Abstraction has 1494 states and 5496 transitions. [2021-10-06 21:07:06,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:06,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 5496 transitions. [2021-10-06 21:07:06,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:07:06,686 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:06,686 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:06,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (154)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:06,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:06,887 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:07:06,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:06,887 INFO L82 PathProgramCache]: Analyzing trace with hash -572995650, now seen corresponding path program 137 times [2021-10-06 21:07:06,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:06,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713290235] [2021-10-06 21:07:06,888 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:07:06,888 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:06,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:06,890 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:06,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (155)] Waiting until timeout for monitored process [2021-10-06 21:07:08,035 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:07:08,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:08,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:07:08,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:08,163 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:08,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:08,562 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:08,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713290235] [2021-10-06 21:07:08,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713290235] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:07:08,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:07:08,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:07:08,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476797595] [2021-10-06 21:07:08,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:07:08,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:08,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:07:08,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:07:08,564 INFO L87 Difference]: Start difference. First operand 1494 states and 5496 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:12,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:12,543 INFO L93 Difference]: Finished difference Result 1638 states and 5780 transitions. [2021-10-06 21:07:12,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-06 21:07:12,544 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:07:12,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:12,547 INFO L225 Difference]: With dead ends: 1638 [2021-10-06 21:07:12,548 INFO L226 Difference]: Without dead ends: 1622 [2021-10-06 21:07:12,548 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2290.3ms TimeCoverageRelationStatistics Valid=234, Invalid=758, Unknown=0, NotChecked=0, Total=992 [2021-10-06 21:07:12,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2021-10-06 21:07:12,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1502. [2021-10-06 21:07:12,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1501 states have (on average 3.681545636242505) internal successors, (5526), 1501 states have internal predecessors, (5526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:12,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 5526 transitions. [2021-10-06 21:07:12,574 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 5526 transitions. Word has length 18 [2021-10-06 21:07:12,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:12,574 INFO L470 AbstractCegarLoop]: Abstraction has 1502 states and 5526 transitions. [2021-10-06 21:07:12,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:12,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 5526 transitions. [2021-10-06 21:07:12,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:07:12,577 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:12,577 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:12,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (155)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:12,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:12,778 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:07:12,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:12,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1206065052, now seen corresponding path program 138 times [2021-10-06 21:07:12,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:12,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981060688] [2021-10-06 21:07:12,779 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:07:12,780 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:12,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:12,781 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:12,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (156)] Waiting until timeout for monitored process [2021-10-06 21:07:14,087 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:07:14,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:14,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:07:14,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:14,228 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:14,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:15,072 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:15,073 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:15,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981060688] [2021-10-06 21:07:15,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981060688] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:07:15,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:07:15,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-06 21:07:15,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936605721] [2021-10-06 21:07:15,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:07:15,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:15,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:07:15,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:07:15,075 INFO L87 Difference]: Start difference. First operand 1502 states and 5526 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:38,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:38,785 INFO L93 Difference]: Finished difference Result 2016 states and 6900 transitions. [2021-10-06 21:07:38,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-06 21:07:38,787 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:07:38,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:38,791 INFO L225 Difference]: With dead ends: 2016 [2021-10-06 21:07:38,791 INFO L226 Difference]: Without dead ends: 2006 [2021-10-06 21:07:38,792 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 20787.1ms TimeCoverageRelationStatistics Valid=601, Invalid=2705, Unknown=0, NotChecked=0, Total=3306 [2021-10-06 21:07:38,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2021-10-06 21:07:38,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 1678. [2021-10-06 21:07:38,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1677 states have (on average 3.72927847346452) internal successors, (6254), 1677 states have internal predecessors, (6254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:38,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 6254 transitions. [2021-10-06 21:07:38,824 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 6254 transitions. Word has length 18 [2021-10-06 21:07:38,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:38,824 INFO L470 AbstractCegarLoop]: Abstraction has 1678 states and 6254 transitions. [2021-10-06 21:07:38,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:38,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 6254 transitions. [2021-10-06 21:07:38,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:07:38,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:38,828 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:38,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (156)] Ended with exit code 0 [2021-10-06 21:07:39,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 156 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:39,035 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:07:39,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:39,036 INFO L82 PathProgramCache]: Analyzing trace with hash -510494716, now seen corresponding path program 139 times [2021-10-06 21:07:39,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:39,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811896362] [2021-10-06 21:07:39,036 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:07:39,037 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:39,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:39,038 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:39,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (157)] Waiting until timeout for monitored process [2021-10-06 21:07:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:07:40,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:07:40,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:40,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:40,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:40,654 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:40,655 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:40,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811896362] [2021-10-06 21:07:40,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811896362] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:07:40,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:07:40,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:07:40,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608911080] [2021-10-06 21:07:40,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:07:40,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:40,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:07:40,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:07:40,657 INFO L87 Difference]: Start difference. First operand 1678 states and 6254 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:42,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:42,616 INFO L93 Difference]: Finished difference Result 1860 states and 6696 transitions. [2021-10-06 21:07:42,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:07:42,617 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:07:42,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:42,622 INFO L225 Difference]: With dead ends: 1860 [2021-10-06 21:07:42,623 INFO L226 Difference]: Without dead ends: 1860 [2021-10-06 21:07:42,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1241.6ms TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:07:42,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2021-10-06 21:07:42,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1674. [2021-10-06 21:07:42,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 1673 states have (on average 3.7202630005977286) internal successors, (6224), 1673 states have internal predecessors, (6224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:42,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 6224 transitions. [2021-10-06 21:07:42,669 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 6224 transitions. Word has length 18 [2021-10-06 21:07:42,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:42,669 INFO L470 AbstractCegarLoop]: Abstraction has 1674 states and 6224 transitions. [2021-10-06 21:07:42,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:42,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 6224 transitions. [2021-10-06 21:07:42,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:07:42,672 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:42,673 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:42,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (157)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:42,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:42,874 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:07:42,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:42,874 INFO L82 PathProgramCache]: Analyzing trace with hash 107062720, now seen corresponding path program 140 times [2021-10-06 21:07:42,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:42,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272568125] [2021-10-06 21:07:42,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:07:42,876 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:42,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:42,877 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:42,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (158)] Waiting until timeout for monitored process [2021-10-06 21:07:44,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:07:44,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:44,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:07:44,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:44,330 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:44,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:44,732 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:44,733 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:44,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272568125] [2021-10-06 21:07:44,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272568125] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:07:44,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:07:44,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:07:44,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071461213] [2021-10-06 21:07:44,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:07:44,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:44,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:07:44,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:07:44,735 INFO L87 Difference]: Start difference. First operand 1674 states and 6224 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:48,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:48,066 INFO L93 Difference]: Finished difference Result 1860 states and 6660 transitions. [2021-10-06 21:07:48,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 21:07:48,068 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:07:48,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:48,072 INFO L225 Difference]: With dead ends: 1860 [2021-10-06 21:07:48,072 INFO L226 Difference]: Without dead ends: 1860 [2021-10-06 21:07:48,072 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 2572.1ms TimeCoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:07:48,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2021-10-06 21:07:48,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1662. [2021-10-06 21:07:48,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1661 states have (on average 3.7182420228777846) internal successors, (6176), 1661 states have internal predecessors, (6176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:48,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 6176 transitions. [2021-10-06 21:07:48,123 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 6176 transitions. Word has length 18 [2021-10-06 21:07:48,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:48,123 INFO L470 AbstractCegarLoop]: Abstraction has 1662 states and 6176 transitions. [2021-10-06 21:07:48,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:48,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 6176 transitions. [2021-10-06 21:07:48,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:07:48,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:48,127 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:48,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (158)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:48,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:48,327 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:07:48,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:48,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1621984903, now seen corresponding path program 141 times [2021-10-06 21:07:48,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:48,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099864794] [2021-10-06 21:07:48,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:07:48,329 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:48,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:48,331 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:48,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (159)] Waiting until timeout for monitored process [2021-10-06 21:07:55,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:07:55,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:55,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:07:55,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:57,216 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:57,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:07,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:07,828 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:07,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099864794] [2021-10-06 21:08:07,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099864794] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:08:07,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:08:07,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:08:07,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007573482] [2021-10-06 21:08:07,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:08:07,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:07,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:08:07,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=296, Unknown=4, NotChecked=0, Total=342 [2021-10-06 21:08:07,830 INFO L87 Difference]: Start difference. First operand 1662 states and 6176 transitions. Second operand has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:20,146 WARN L207 SmtUtils]: Spent 12.08 s on a formula simplification that was a NOOP. DAG size: 29 [2021-10-06 21:08:32,393 WARN L207 SmtUtils]: Spent 12.07 s on a formula simplification that was a NOOP. DAG size: 28 [2021-10-06 21:09:01,533 WARN L207 SmtUtils]: Spent 24.23 s on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2021-10-06 21:09:22,019 WARN L207 SmtUtils]: Spent 12.11 s on a formula simplification that was a NOOP. DAG size: 37 [2021-10-06 21:09:49,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:49,040 INFO L93 Difference]: Finished difference Result 1818 states and 6477 transitions. [2021-10-06 21:09:49,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 21:09:49,041 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:09:49,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:49,055 INFO L225 Difference]: With dead ends: 1818 [2021-10-06 21:09:49,055 INFO L226 Difference]: Without dead ends: 1813 [2021-10-06 21:09:49,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 78500.5ms TimeCoverageRelationStatistics Valid=86, Invalid=609, Unknown=7, NotChecked=0, Total=702 [2021-10-06 21:09:49,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2021-10-06 21:09:49,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1690. [2021-10-06 21:09:49,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1689 states have (on average 3.7010065127294256) internal successors, (6251), 1689 states have internal predecessors, (6251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:49,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 6251 transitions. [2021-10-06 21:09:49,085 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 6251 transitions. Word has length 19 [2021-10-06 21:09:49,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:49,085 INFO L470 AbstractCegarLoop]: Abstraction has 1690 states and 6251 transitions. [2021-10-06 21:09:49,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:49,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 6251 transitions. [2021-10-06 21:09:49,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:09:49,088 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:49,088 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:49,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (159)] Ended with exit code 0 [2021-10-06 21:09:49,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:49,289 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:09:49,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:49,290 INFO L82 PathProgramCache]: Analyzing trace with hash 944843341, now seen corresponding path program 142 times [2021-10-06 21:09:49,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:49,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138561424] [2021-10-06 21:09:49,291 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:09:49,292 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:49,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:49,292 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:49,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (160)] Waiting until timeout for monitored process [2021-10-06 21:09:54,053 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:09:54,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:09:54,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:09:54,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:55,230 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:09:55,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:10:02,784 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:02,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138561424] [2021-10-06 21:10:02,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138561424] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:10:02,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:10:02,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:10:02,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515063644] [2021-10-06 21:10:02,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:10:02,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:02,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:10:02,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=329, Unknown=2, NotChecked=0, Total=380 [2021-10-06 21:10:02,787 INFO L87 Difference]: Start difference. First operand 1690 states and 6251 transitions. Second operand has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:15,588 WARN L207 SmtUtils]: Spent 12.08 s on a formula simplification that was a NOOP. DAG size: 28 Received shutdown request... [2021-10-06 21:10:40,129 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (160)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:10:40,139 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/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 [2021-10-06 21:10:41,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (160)] Forceful destruction successful, exit code 0 [2021-10-06 21:10:41,339 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-06 21:10:41,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 [2021-10-06 21:10:41,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 21:10:41,351 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:10:41,352 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (1690states) and FLOYD_HOARE automaton (currently 8 states, 20 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. [2021-10-06 21:10:41,353 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:10:41,353 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:10:41,353 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:10:41,354 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:10:41,354 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:10:41,354 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:10:41,354 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:10:41,354 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:10:41,354 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:10:41,354 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:10:41,354 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:10:41,359 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:10:41,359 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:10:41,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:10:41 BasicIcfg [2021-10-06 21:10:41,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:10:41,362 INFO L168 Benchmark]: Toolchain (without parser) took 824162.75 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 126.2 MB in the beginning and 86.4 MB in the end (delta: 39.8 MB). Peak memory consumption was 151.7 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:41,362 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 121.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:10:41,363 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.15 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:41,363 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.28 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 113.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:41,363 INFO L168 Benchmark]: Boogie Preprocessor took 38.96 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 112.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:41,363 INFO L168 Benchmark]: RCFGBuilder took 668.35 ms. Allocated memory is still 151.0 MB. Free memory was 112.1 MB in the beginning and 132.0 MB in the end (delta: -19.9 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:41,364 INFO L168 Benchmark]: TraceAbstraction took 822927.36 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 131.5 MB in the beginning and 86.4 MB in the end (delta: 45.1 MB). Peak memory consumption was 156.2 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:41,365 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 121.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 439.15 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 70.28 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 113.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.96 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 112.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 668.35 ms. Allocated memory is still 151.0 MB. Free memory was 112.1 MB in the beginning and 132.0 MB in the end (delta: -19.9 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 822927.36 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 131.5 MB in the beginning and 86.4 MB in the end (delta: 45.1 MB). Peak memory consumption was 156.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10840.8ms, 113 PlacesBefore, 32 PlacesAfterwards, 114 TransitionsBefore, 27 TransitionsAfterwards, 1248 CoEnabledTransitionPairs, 7 FixpointIterations, 65 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 2 ConcurrentYvCompositions, 6 ChoiceCompositions, 112 TotalNumberOfCompositions, 1122 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1122, positive: 1122, positive conditional: 0, positive unconditional: 1122, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 727, positive: 727, positive conditional: 0, positive unconditional: 727, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 727, positive: 727, positive conditional: 0, positive unconditional: 727, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1122, positive: 395, positive conditional: 0, positive unconditional: 395, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 727, unknown conditional: 0, unknown unconditional: 727] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (1690states) and FLOYD_HOARE automaton (currently 8 states, 20 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1690states) and FLOYD_HOARE automaton (currently 8 states, 20 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1690states) and FLOYD_HOARE automaton (currently 8 states, 20 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1690states) and FLOYD_HOARE automaton (currently 8 states, 20 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1690states) and FLOYD_HOARE automaton (currently 8 states, 20 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1690states) and FLOYD_HOARE automaton (currently 8 states, 20 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1690states) and FLOYD_HOARE automaton (currently 8 states, 20 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1690states) and FLOYD_HOARE automaton (currently 8 states, 20 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1690states) and FLOYD_HOARE automaton (currently 8 states, 20 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (1690states) and FLOYD_HOARE automaton (currently 8 states, 20 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 79]: 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 (1690states) and FLOYD_HOARE automaton (currently 8 states, 20 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 80]: 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 (1690states) and FLOYD_HOARE automaton (currently 8 states, 20 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 137 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 822791.5ms, OverallIterations: 159, TraceHistogramMax: 3, EmptinessCheckTime: 272.7ms, AutomataDifference: 532099.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10903.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6057 SDtfs, 15769 SDslu, 34974 SDs, 0 SdLazy, 38201 SolverSat, 4329 SolverUnsat, 26 SolverUnknown, 0 SolverNotchecked, 175620.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8203 GetRequests, 4022 SyntacticMatches, 31 SemanticMatches, 4149 ConstructedPredicates, 0 IntricatePredicates, 15 DeprecatedPredicates, 27023 ImplicationChecksByTransitivity, 402766.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1690occurred in iteration=158, InterpolantAutomatonStates: 3498, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2466.9ms AutomataMinimizationTime, 158 MinimizatonAttempts, 22871 StatesRemovedByMinimization, 152 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1118.2ms SsaConstructionTime, 30544.1ms SatisfiabilityAnalysisTime, 124398.7ms InterpolantComputationTime, 2649 NumberOfCodeBlocks, 2649 NumberOfCodeBlocksAsserted, 321 NumberOfCheckSat, 4980 ConstructedInterpolants, 29 QuantifiedInterpolants, 34971 SizeOfPredicates, 483 NumberOfNonLiveVariables, 12679 ConjunctsInSsa, 1513 ConjunctsInUnsatCore, 318 InterpolantComputations, 22 PerfectInterpolantSequences, 380/2120 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