/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/parallel-misc-3-extended.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 17:13:27,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 17:13:27,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 17:13:27,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 17:13:27,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 17:13:27,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 17:13:27,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 17:13:27,536 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 17:13:27,596 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 17:13:27,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 17:13:27,597 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 17:13:27,598 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 17:13:27,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 17:13:27,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 17:13:27,603 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 17:13:27,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 17:13:27,604 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 17:13:27,604 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 17:13:27,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 17:13:27,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 17:13:27,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 17:13:27,607 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 17:13:27,607 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 17:13:27,607 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 17:13:27,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 17:13:27,607 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 17:13:27,608 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 17:13:27,608 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 17:13:27,608 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 17:13:27,608 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 17:13:27,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 17:13:27,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 17:13:27,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 17:13:27,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:13:27,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 17:13:27,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 17:13:27,610 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 17:13:27,611 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 17:13:27,611 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 17:13:27,611 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 17:13:27,612 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 17:13:28,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 17:13:28,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 17:13:28,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 17:13:28,176 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 17:13:28,177 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 17:13:28,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2021-10-08 17:13:28,273 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87b284370/2d2139dd05114a5e9f5005ea343dd203/FLAG9b549a068 [2021-10-08 17:13:29,081 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 17:13:29,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2021-10-08 17:13:29,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87b284370/2d2139dd05114a5e9f5005ea343dd203/FLAG9b549a068 [2021-10-08 17:13:29,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87b284370/2d2139dd05114a5e9f5005ea343dd203 [2021-10-08 17:13:29,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 17:13:29,409 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 17:13:29,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 17:13:29,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 17:13:29,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 17:13:29,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:13:29" (1/1) ... [2021-10-08 17:13:29,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38250762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:29, skipping insertion in model container [2021-10-08 17:13:29,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:13:29" (1/1) ... [2021-10-08 17:13:29,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 17:13:29,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 17:13:29,657 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/parallel-misc-3-extended.wvr.c[2591,2604] [2021-10-08 17:13:29,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:13:29,677 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 17:13:29,705 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/parallel-misc-3-extended.wvr.c[2591,2604] [2021-10-08 17:13:29,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:13:29,726 INFO L208 MainTranslator]: Completed translation [2021-10-08 17:13:29,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:29 WrapperNode [2021-10-08 17:13:29,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 17:13:29,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 17:13:29,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 17:13:29,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 17:13:29,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:29" (1/1) ... [2021-10-08 17:13:29,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:29" (1/1) ... [2021-10-08 17:13:29,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 17:13:29,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 17:13:29,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 17:13:29,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 17:13:29,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:29" (1/1) ... [2021-10-08 17:13:29,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:29" (1/1) ... [2021-10-08 17:13:29,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:29" (1/1) ... [2021-10-08 17:13:29,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:29" (1/1) ... [2021-10-08 17:13:29,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:29" (1/1) ... [2021-10-08 17:13:29,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:29" (1/1) ... [2021-10-08 17:13:29,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:29" (1/1) ... [2021-10-08 17:13:29,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 17:13:29,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 17:13:29,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 17:13:29,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 17:13:29,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:29" (1/1) ... [2021-10-08 17:13:29,825 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:13:29,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 17:13:29,861 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) [2021-10-08 17:13:29,872 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 [2021-10-08 17:13:29,926 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 17:13:29,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 17:13:29,927 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 17:13:29,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 17:13:29,927 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 17:13:29,928 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 17:13:29,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 17:13:29,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 17:13:29,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 17:13:29,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 17:13:29,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 17:13:29,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 17:13:29,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 17:13:29,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 17:13:29,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 17:13:29,931 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 17:13:30,542 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 17:13:30,543 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-08 17:13:30,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:13:30 BoogieIcfgContainer [2021-10-08 17:13:30,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 17:13:30,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 17:13:30,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 17:13:30,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 17:13:30,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 05:13:29" (1/3) ... [2021-10-08 17:13:30,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689d7d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:13:30, skipping insertion in model container [2021-10-08 17:13:30,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:29" (2/3) ... [2021-10-08 17:13:30,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689d7d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:13:30, skipping insertion in model container [2021-10-08 17:13:30,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:13:30" (3/3) ... [2021-10-08 17:13:30,561 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2021-10-08 17:13:30,572 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 17:13:30,572 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-08 17:13:30,573 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 17:13:30,643 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,644 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,644 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,644 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,644 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,645 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,645 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,645 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,645 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,646 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,646 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,646 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,646 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,646 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,647 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,647 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,647 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,648 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,648 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,648 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,649 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,649 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,649 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,649 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,649 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,650 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,650 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,650 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,651 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,651 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,651 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,651 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,652 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,652 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,652 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,652 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,653 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,653 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,653 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,653 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,657 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,657 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,657 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,658 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,658 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,660 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,661 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,661 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,663 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,664 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,664 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:30,671 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-08 17:13:30,727 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 17:13:30,735 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 [2021-10-08 17:13:30,736 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-08 17:13:30,754 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 17:13:30,766 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 139 transitions, 302 flow [2021-10-08 17:13:30,769 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 139 transitions, 302 flow [2021-10-08 17:13:30,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 133 places, 139 transitions, 302 flow [2021-10-08 17:13:30,835 INFO L129 PetriNetUnfolder]: 16/136 cut-off events. [2021-10-08 17:13:30,836 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-08 17:13:30,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 136 events. 16/136 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 184 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 85. Up to 4 conditions per place. [2021-10-08 17:13:30,850 INFO L116 LiptonReduction]: Number of co-enabled transitions 3570 [2021-10-08 17:13:45,394 INFO L131 LiptonReduction]: Checked pairs total: 3492 [2021-10-08 17:13:45,394 INFO L133 LiptonReduction]: Total number of compositions: 143 [2021-10-08 17:13:45,404 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 36 transitions, 96 flow [2021-10-08 17:13:45,421 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 87 states, 73 states have (on average 3.493150684931507) internal successors, (255), 86 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:13:45,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 73 states have (on average 3.493150684931507) internal successors, (255), 86 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:13:45,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-08 17:13:45,430 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:45,430 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-08 17:13:45,431 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:13:45,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:45,448 INFO L82 PathProgramCache]: Analyzing trace with hash 578, now seen corresponding path program 1 times [2021-10-08 17:13:45,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:45,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091891437] [2021-10-08 17:13:45,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:13:45,469 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:45,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:45,477 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) [2021-10-08 17:13:45,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 17:13:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:13:45,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-08 17:13:45,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:45,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:45,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:45,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:45,555 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:45,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091891437] [2021-10-08 17:13:45,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091891437] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:13:45,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:13:45,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-08 17:13:45,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814334460] [2021-10-08 17:13:45,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-08 17:13:45,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:45,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-08 17:13:45,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 17:13:45,586 INFO L87 Difference]: Start difference. First operand has 87 states, 73 states have (on average 3.493150684931507) internal successors, (255), 86 states have internal predecessors, (255), 0 states have call successors, (0), 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) [2021-10-08 17:13:45,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:45,607 INFO L93 Difference]: Finished difference Result 84 states and 252 transitions. [2021-10-08 17:13:45,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-08 17:13:45,609 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 [2021-10-08 17:13:45,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:45,622 INFO L225 Difference]: With dead ends: 84 [2021-10-08 17:13:45,622 INFO L226 Difference]: Without dead ends: 84 [2021-10-08 17:13:45,624 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 [2021-10-08 17:13:45,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-08 17:13:45,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-10-08 17:13:45,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 73 states have (on average 3.452054794520548) internal successors, (252), 83 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:13:45,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 252 transitions. [2021-10-08 17:13:45,675 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 252 transitions. Word has length 1 [2021-10-08 17:13:45,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:45,675 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 252 transitions. [2021-10-08 17:13:45,675 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) [2021-10-08 17:13:45,676 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 252 transitions. [2021-10-08 17:13:45,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:13:45,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:45,676 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:13:45,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-08 17:13:45,889 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 [2021-10-08 17:13:45,890 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:13:45,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:45,892 INFO L82 PathProgramCache]: Analyzing trace with hash 567356, now seen corresponding path program 1 times [2021-10-08 17:13:45,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:45,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48157956] [2021-10-08 17:13:45,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:13:45,894 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:45,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:45,895 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) [2021-10-08 17:13:45,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 17:13:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:13:46,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:13:46,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:46,283 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-08 17:13:46,285 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 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-08 17:13:46,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:46,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:46,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:46,472 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:46,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48157956] [2021-10-08 17:13:46,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48157956] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:13:46,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:13:46,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:13:46,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932911648] [2021-10-08 17:13:46,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:13:46,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:46,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:13:46,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:13:46,477 INFO L87 Difference]: Start difference. First operand 84 states and 252 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) [2021-10-08 17:13:46,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:46,532 INFO L93 Difference]: Finished difference Result 78 states and 236 transitions. [2021-10-08 17:13:46,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:13:46,533 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 [2021-10-08 17:13:46,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:46,535 INFO L225 Difference]: With dead ends: 78 [2021-10-08 17:13:46,536 INFO L226 Difference]: Without dead ends: 78 [2021-10-08 17:13:46,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:13:46,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-08 17:13:46,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-08 17:13:46,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 69 states have (on average 3.420289855072464) internal successors, (236), 77 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:13:46,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 236 transitions. [2021-10-08 17:13:46,549 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 236 transitions. Word has length 3 [2021-10-08 17:13:46,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:46,550 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 236 transitions. [2021-10-08 17:13:46,550 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) [2021-10-08 17:13:46,550 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 236 transitions. [2021-10-08 17:13:46,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:13:46,551 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:46,551 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:13:46,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-08 17:13:46,764 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 [2021-10-08 17:13:46,765 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:13:46,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:46,766 INFO L82 PathProgramCache]: Analyzing trace with hash 567357, now seen corresponding path program 1 times [2021-10-08 17:13:46,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:46,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594273053] [2021-10-08 17:13:46,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:13:46,768 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:46,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:46,770 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) [2021-10-08 17:13:46,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 17:13:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:13:46,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:13:46,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:46,860 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 17:13:46,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-08 17:13:46,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:46,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:46,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:46,916 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:46,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594273053] [2021-10-08 17:13:46,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594273053] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:13:46,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:13:46,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:13:46,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156353242] [2021-10-08 17:13:46,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:13:46,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:46,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:13:46,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:13:46,919 INFO L87 Difference]: Start difference. First operand 78 states and 236 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) [2021-10-08 17:13:46,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:46,950 INFO L93 Difference]: Finished difference Result 72 states and 220 transitions. [2021-10-08 17:13:46,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:13:46,951 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 [2021-10-08 17:13:46,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:46,952 INFO L225 Difference]: With dead ends: 72 [2021-10-08 17:13:46,952 INFO L226 Difference]: Without dead ends: 72 [2021-10-08 17:13:46,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:13:46,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-08 17:13:46,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-08 17:13:46,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 65 states have (on average 3.3846153846153846) internal successors, (220), 71 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:13:46,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 220 transitions. [2021-10-08 17:13:46,962 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 220 transitions. Word has length 3 [2021-10-08 17:13:46,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:46,962 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 220 transitions. [2021-10-08 17:13:46,962 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) [2021-10-08 17:13:46,962 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 220 transitions. [2021-10-08 17:13:46,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:13:46,963 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:46,963 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:13:46,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 17:13:47,170 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 [2021-10-08 17:13:47,171 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:13:47,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:47,171 INFO L82 PathProgramCache]: Analyzing trace with hash 545244014, now seen corresponding path program 1 times [2021-10-08 17:13:47,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:47,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801833994] [2021-10-08 17:13:47,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:13:47,174 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:47,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:47,175 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) [2021-10-08 17:13:47,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 17:13:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:13:47,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:13:47,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:47,430 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-08 17:13:47,432 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 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-08 17:13:47,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:47,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:47,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:47,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:47,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801833994] [2021-10-08 17:13:47,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801833994] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:13:47,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:13:47,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:13:47,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516062853] [2021-10-08 17:13:47,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:13:47,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:47,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:13:47,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:13:47,672 INFO L87 Difference]: Start difference. First operand 72 states and 220 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) [2021-10-08 17:13:47,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:47,709 INFO L93 Difference]: Finished difference Result 66 states and 204 transitions. [2021-10-08 17:13:47,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:13:47,710 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 [2021-10-08 17:13:47,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:47,712 INFO L225 Difference]: With dead ends: 66 [2021-10-08 17:13:47,712 INFO L226 Difference]: Without dead ends: 66 [2021-10-08 17:13:47,712 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:13:47,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-08 17:13:47,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-10-08 17:13:47,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 3.3442622950819674) internal successors, (204), 65 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:13:47,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 204 transitions. [2021-10-08 17:13:47,720 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 204 transitions. Word has length 5 [2021-10-08 17:13:47,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:47,720 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 204 transitions. [2021-10-08 17:13:47,721 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) [2021-10-08 17:13:47,721 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 204 transitions. [2021-10-08 17:13:47,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:13:47,721 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:47,722 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:13:47,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-08 17:13:47,935 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 [2021-10-08 17:13:47,935 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:13:47,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:47,937 INFO L82 PathProgramCache]: Analyzing trace with hash 545244015, now seen corresponding path program 1 times [2021-10-08 17:13:47,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:47,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561413648] [2021-10-08 17:13:47,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:13:47,939 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:47,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:47,941 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) [2021-10-08 17:13:47,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 17:13:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:13:48,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:13:48,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:48,034 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 17:13:48,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-08 17:13:48,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:48,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:48,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:48,092 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:48,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561413648] [2021-10-08 17:13:48,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561413648] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:13:48,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:13:48,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:13:48,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613888368] [2021-10-08 17:13:48,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:13:48,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:48,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:13:48,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:13:48,095 INFO L87 Difference]: Start difference. First operand 66 states and 204 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) [2021-10-08 17:13:48,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:48,121 INFO L93 Difference]: Finished difference Result 60 states and 188 transitions. [2021-10-08 17:13:48,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:13:48,121 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 [2021-10-08 17:13:48,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:48,123 INFO L225 Difference]: With dead ends: 60 [2021-10-08 17:13:48,123 INFO L226 Difference]: Without dead ends: 60 [2021-10-08 17:13:48,123 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:13:48,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-08 17:13:48,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-08 17:13:48,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 57 states have (on average 3.2982456140350878) internal successors, (188), 59 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:13:48,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 188 transitions. [2021-10-08 17:13:48,130 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 188 transitions. Word has length 5 [2021-10-08 17:13:48,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:48,130 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 188 transitions. [2021-10-08 17:13:48,130 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) [2021-10-08 17:13:48,131 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 188 transitions. [2021-10-08 17:13:48,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 17:13:48,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:48,131 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:13:48,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-08 17:13:48,345 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 [2021-10-08 17:13:48,346 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:13:48,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:48,346 INFO L82 PathProgramCache]: Analyzing trace with hash -6500714, now seen corresponding path program 1 times [2021-10-08 17:13:48,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:48,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192288796] [2021-10-08 17:13:48,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:13:48,347 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:48,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:48,350 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) [2021-10-08 17:13:48,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-08 17:13:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:13:48,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:13:48,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:48,453 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 17:13:48,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-08 17:13:48,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:48,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:48,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:48,602 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:48,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192288796] [2021-10-08 17:13:48,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192288796] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:13:48,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:13:48,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-08 17:13:48,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677810152] [2021-10-08 17:13:48,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 17:13:48,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:48,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 17:13:48,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:13:48,613 INFO L87 Difference]: Start difference. First operand 60 states and 188 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-10-08 17:13:48,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:48,654 INFO L93 Difference]: Finished difference Result 52 states and 156 transitions. [2021-10-08 17:13:48,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:13:48,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 7 [2021-10-08 17:13:48,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:48,656 INFO L225 Difference]: With dead ends: 52 [2021-10-08 17:13:48,656 INFO L226 Difference]: Without dead ends: 52 [2021-10-08 17:13:48,656 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.6ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:13:48,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-08 17:13:48,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-08 17:13:48,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 3.12) internal successors, (156), 51 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:13:48,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 156 transitions. [2021-10-08 17:13:48,661 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 156 transitions. Word has length 7 [2021-10-08 17:13:48,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:48,661 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 156 transitions. [2021-10-08 17:13:48,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-10-08 17:13:48,662 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 156 transitions. [2021-10-08 17:13:48,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 17:13:48,662 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:48,663 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:13:48,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-08 17:13:48,870 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 [2021-10-08 17:13:48,871 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:13:48,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:48,872 INFO L82 PathProgramCache]: Analyzing trace with hash -6500713, now seen corresponding path program 1 times [2021-10-08 17:13:48,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:48,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740017654] [2021-10-08 17:13:48,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:13:48,874 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:48,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:48,875 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) [2021-10-08 17:13:48,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-08 17:13:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:13:48,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:13:48,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:49,117 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-08 17:13:49,118 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 4 case distinctions, treesize of input 28 treesize of output 58 [2021-10-08 17:13:49,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 57 [2021-10-08 17:13:49,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:49,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:49,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:49,477 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:49,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740017654] [2021-10-08 17:13:49,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740017654] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:13:49,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:13:49,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:13:49,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084418646] [2021-10-08 17:13:49,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:13:49,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:49,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:13:49,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:13:49,480 INFO L87 Difference]: Start difference. First operand 52 states and 156 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:13:49,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:49,505 INFO L93 Difference]: Finished difference Result 44 states and 124 transitions. [2021-10-08 17:13:49,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:13:49,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 17:13:49,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:49,507 INFO L225 Difference]: With dead ends: 44 [2021-10-08 17:13:49,507 INFO L226 Difference]: Without dead ends: 44 [2021-10-08 17:13:49,508 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:13:49,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-08 17:13:49,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-10-08 17:13:49,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 2.883720930232558) internal successors, (124), 43 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) [2021-10-08 17:13:49,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 124 transitions. [2021-10-08 17:13:49,512 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 124 transitions. Word has length 7 [2021-10-08 17:13:49,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:49,512 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 124 transitions. [2021-10-08 17:13:49,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:13:49,513 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 124 transitions. [2021-10-08 17:13:49,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:13:49,514 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:49,514 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:13:49,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-08 17:13:49,714 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 [2021-10-08 17:13:49,715 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:13:49,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:49,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1944445849, now seen corresponding path program 1 times [2021-10-08 17:13:49,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:49,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649747190] [2021-10-08 17:13:49,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:13:49,718 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:49,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:49,719 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) [2021-10-08 17:13:49,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-08 17:13:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:13:49,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:13:49,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:49,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:49,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:49,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649747190] [2021-10-08 17:13:49,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649747190] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:13:49,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:13:49,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-08 17:13:49,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057707618] [2021-10-08 17:13:49,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:13:49,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:49,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:13:49,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:13:49,881 INFO L87 Difference]: Start difference. First operand 44 states and 124 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 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) [2021-10-08 17:13:49,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:49,892 INFO L93 Difference]: Finished difference Result 58 states and 168 transitions. [2021-10-08 17:13:49,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:13:49,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 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 16 [2021-10-08 17:13:49,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:49,894 INFO L225 Difference]: With dead ends: 58 [2021-10-08 17:13:49,894 INFO L226 Difference]: Without dead ends: 58 [2021-10-08 17:13:49,895 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:13:49,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-08 17:13:49,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-08 17:13:49,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.9473684210526314) internal successors, (168), 57 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:13:49,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 168 transitions. [2021-10-08 17:13:49,900 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 168 transitions. Word has length 16 [2021-10-08 17:13:49,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:49,901 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 168 transitions. [2021-10-08 17:13:49,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 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) [2021-10-08 17:13:49,901 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 168 transitions. [2021-10-08 17:13:49,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:13:49,902 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:49,902 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:13:49,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-08 17:13:50,115 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 [2021-10-08 17:13:50,123 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:13:50,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:50,124 INFO L82 PathProgramCache]: Analyzing trace with hash -327538380, now seen corresponding path program 1 times [2021-10-08 17:13:50,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:50,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384982415] [2021-10-08 17:13:50,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:13:50,128 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:50,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:50,130 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) [2021-10-08 17:13:50,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-08 17:13:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:13:50,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:13:50,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:50,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:50,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:50,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:50,380 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:50,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384982415] [2021-10-08 17:13:50,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384982415] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:13:50,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:13:50,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-08 17:13:50,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177351830] [2021-10-08 17:13:50,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:13:50,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:50,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:13:50,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:13:50,382 INFO L87 Difference]: Start difference. First operand 58 states and 168 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 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) [2021-10-08 17:13:50,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:50,410 INFO L93 Difference]: Finished difference Result 72 states and 212 transitions. [2021-10-08 17:13:50,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 17:13:50,411 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 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 17 [2021-10-08 17:13:50,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:50,412 INFO L225 Difference]: With dead ends: 72 [2021-10-08 17:13:50,412 INFO L226 Difference]: Without dead ends: 72 [2021-10-08 17:13:50,412 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.6ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:13:50,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-08 17:13:50,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-08 17:13:50,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.9859154929577465) internal successors, (212), 71 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:13:50,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 212 transitions. [2021-10-08 17:13:50,418 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 212 transitions. Word has length 17 [2021-10-08 17:13:50,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:50,418 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 212 transitions. [2021-10-08 17:13:50,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 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) [2021-10-08 17:13:50,419 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 212 transitions. [2021-10-08 17:13:50,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:13:50,420 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:50,420 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:13:50,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-08 17:13:50,632 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 [2021-10-08 17:13:50,633 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:13:50,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:50,634 INFO L82 PathProgramCache]: Analyzing trace with hash -2039572743, now seen corresponding path program 2 times [2021-10-08 17:13:50,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:50,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273204360] [2021-10-08 17:13:50,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:13:50,635 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:50,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:50,637 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) [2021-10-08 17:13:50,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-08 17:13:50,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 17:13:50,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:13:50,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:13:50,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:50,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 17:13:50,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:50,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 17:13:50,845 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:50,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273204360] [2021-10-08 17:13:50,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273204360] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:13:50,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:13:50,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-08 17:13:50,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142007661] [2021-10-08 17:13:50,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:13:50,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:50,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:13:50,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:13:50,847 INFO L87 Difference]: Start difference. First operand 72 states and 212 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 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) [2021-10-08 17:13:50,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:50,859 INFO L93 Difference]: Finished difference Result 94 states and 284 transitions. [2021-10-08 17:13:50,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:13:50,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 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 [2021-10-08 17:13:50,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:50,861 INFO L225 Difference]: With dead ends: 94 [2021-10-08 17:13:50,861 INFO L226 Difference]: Without dead ends: 94 [2021-10-08 17:13:50,861 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:13:50,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-08 17:13:50,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-10-08 17:13:50,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 3.053763440860215) internal successors, (284), 93 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) [2021-10-08 17:13:50,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 284 transitions. [2021-10-08 17:13:50,880 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 284 transitions. Word has length 18 [2021-10-08 17:13:50,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:50,880 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 284 transitions. [2021-10-08 17:13:50,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 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) [2021-10-08 17:13:50,881 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 284 transitions. [2021-10-08 17:13:50,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:13:50,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:50,887 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:13:50,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-08 17:13:51,093 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 [2021-10-08 17:13:51,094 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:13:51,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:51,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1397112298, now seen corresponding path program 1 times [2021-10-08 17:13:51,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:51,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419648253] [2021-10-08 17:13:51,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:13:51,097 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:51,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:51,098 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) [2021-10-08 17:13:51,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-08 17:13:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:13:51,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 17:13:51,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:51,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 17:13:51,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 17:13:51,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:51,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419648253] [2021-10-08 17:13:51,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419648253] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:13:51,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:13:51,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-08 17:13:51,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886049905] [2021-10-08 17:13:51,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:13:51,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:51,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:13:51,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:13:51,435 INFO L87 Difference]: Start difference. First operand 94 states and 284 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:13:51,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:51,458 INFO L93 Difference]: Finished difference Result 116 states and 356 transitions. [2021-10-08 17:13:51,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 17:13:51,458 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have 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 [2021-10-08 17:13:51,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:51,460 INFO L225 Difference]: With dead ends: 116 [2021-10-08 17:13:51,460 INFO L226 Difference]: Without dead ends: 116 [2021-10-08 17:13:51,460 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:13:51,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-08 17:13:51,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-10-08 17:13:51,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 3.0956521739130434) internal successors, (356), 115 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:13:51,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 356 transitions. [2021-10-08 17:13:51,474 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 356 transitions. Word has length 19 [2021-10-08 17:13:51,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:51,475 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 356 transitions. [2021-10-08 17:13:51,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:13:51,475 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 356 transitions. [2021-10-08 17:13:51,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:13:51,479 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:51,479 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:13:51,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-08 17:13:51,692 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 [2021-10-08 17:13:51,693 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:13:51,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:51,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1339292313, now seen corresponding path program 2 times [2021-10-08 17:13:51,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:51,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025066517] [2021-10-08 17:13:51,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:13:51,695 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:51,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:51,697 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) [2021-10-08 17:13:51,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-08 17:13:51,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 17:13:51,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:13:51,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:13:51,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:51,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 17:13:51,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:51,906 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 17:13:51,906 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:51,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025066517] [2021-10-08 17:13:51,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025066517] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:13:51,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:13:51,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-08 17:13:51,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780469746] [2021-10-08 17:13:51,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:13:51,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:51,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:13:51,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:13:51,910 INFO L87 Difference]: Start difference. First operand 116 states and 356 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:13:51,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:51,958 INFO L93 Difference]: Finished difference Result 164 states and 516 transitions. [2021-10-08 17:13:51,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:13:51,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 17:13:51,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:51,962 INFO L225 Difference]: With dead ends: 164 [2021-10-08 17:13:51,962 INFO L226 Difference]: Without dead ends: 164 [2021-10-08 17:13:51,962 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:13:51,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-08 17:13:51,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-10-08 17:13:51,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 3.165644171779141) internal successors, (516), 163 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:13:51,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 516 transitions. [2021-10-08 17:13:51,975 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 516 transitions. Word has length 20 [2021-10-08 17:13:51,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:51,976 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 516 transitions. [2021-10-08 17:13:51,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:13:51,976 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 516 transitions. [2021-10-08 17:13:51,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 17:13:51,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:51,977 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:13:51,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-08 17:13:52,190 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 [2021-10-08 17:13:52,191 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:13:52,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:52,192 INFO L82 PathProgramCache]: Analyzing trace with hash 523277575, now seen corresponding path program 1 times [2021-10-08 17:13:52,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:52,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164513616] [2021-10-08 17:13:52,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:13:52,193 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:52,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:52,194 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) [2021-10-08 17:13:52,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-08 17:13:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:13:52,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:13:52,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:52,430 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 17:13:52,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:52,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 17:13:52,565 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:52,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164513616] [2021-10-08 17:13:52,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164513616] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:13:52,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:13:52,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-08 17:13:52,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866626662] [2021-10-08 17:13:52,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:13:52,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:52,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:13:52,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:13:52,567 INFO L87 Difference]: Start difference. First operand 164 states and 516 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 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) [2021-10-08 17:13:52,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:52,604 INFO L93 Difference]: Finished difference Result 212 states and 676 transitions. [2021-10-08 17:13:52,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 17:13:52,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 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 21 [2021-10-08 17:13:52,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:52,606 INFO L225 Difference]: With dead ends: 212 [2021-10-08 17:13:52,607 INFO L226 Difference]: Without dead ends: 212 [2021-10-08 17:13:52,607 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:13:52,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-10-08 17:13:52,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-10-08 17:13:52,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 3.203791469194313) internal successors, (676), 211 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:13:52,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 676 transitions. [2021-10-08 17:13:52,636 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 676 transitions. Word has length 21 [2021-10-08 17:13:52,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:52,636 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 676 transitions. [2021-10-08 17:13:52,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 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) [2021-10-08 17:13:52,637 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 676 transitions. [2021-10-08 17:13:52,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:13:52,638 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:52,638 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:13:52,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-08 17:13:52,850 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 [2021-10-08 17:13:52,851 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:13:52,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:52,852 INFO L82 PathProgramCache]: Analyzing trace with hash 996624473, now seen corresponding path program 2 times [2021-10-08 17:13:52,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:52,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382394546] [2021-10-08 17:13:52,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:13:52,854 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:52,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:52,855 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) [2021-10-08 17:13:52,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-08 17:13:53,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:13:53,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:13:53,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:13:53,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:53,494 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:53,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:54,187 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:13:54,187 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:54,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382394546] [2021-10-08 17:13:54,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382394546] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:13:54,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:13:54,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-08 17:13:54,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098954162] [2021-10-08 17:13:54,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:13:54,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:54,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:13:54,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:13:54,190 INFO L87 Difference]: Start difference. First operand 212 states and 676 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:13:56,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:56,534 INFO L93 Difference]: Finished difference Result 1067 states and 3643 transitions. [2021-10-08 17:13:56,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-08 17:13:56,535 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:13:56,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:56,545 INFO L225 Difference]: With dead ends: 1067 [2021-10-08 17:13:56,545 INFO L226 Difference]: Without dead ends: 1060 [2021-10-08 17:13:56,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 2102.1ms TimeCoverageRelationStatistics Valid=515, Invalid=1647, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 17:13:56,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2021-10-08 17:13:56,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 500. [2021-10-08 17:13:56,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 3.62124248496994) internal successors, (1807), 499 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:13:56,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 1807 transitions. [2021-10-08 17:13:56,579 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 1807 transitions. Word has length 22 [2021-10-08 17:13:56,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:56,580 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 1807 transitions. [2021-10-08 17:13:56,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:13:56,580 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1807 transitions. [2021-10-08 17:13:56,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:13:56,583 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:56,583 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:13:56,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-08 17:13:56,796 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 [2021-10-08 17:13:56,797 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:13:56,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:56,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1685093543, now seen corresponding path program 3 times [2021-10-08 17:13:56,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:56,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55054794] [2021-10-08 17:13:56,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:13:56,799 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:56,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:56,800 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) [2021-10-08 17:13:56,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-08 17:13:56,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:13:56,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:13:56,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:13:56,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:57,455 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:57,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:58,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:58,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55054794] [2021-10-08 17:13:58,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55054794] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:13:58,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:13:58,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:13:58,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444801966] [2021-10-08 17:13:58,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:13:58,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:58,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:13:58,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:13:58,238 INFO L87 Difference]: Start difference. First operand 500 states and 1807 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:01,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:01,686 INFO L93 Difference]: Finished difference Result 1529 states and 5481 transitions. [2021-10-08 17:14:01,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-08 17:14:01,687 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:14:01,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:01,702 INFO L225 Difference]: With dead ends: 1529 [2021-10-08 17:14:01,703 INFO L226 Difference]: Without dead ends: 1522 [2021-10-08 17:14:01,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 3075.0ms TimeCoverageRelationStatistics Valid=789, Invalid=2751, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 17:14:01,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-10-08 17:14:01,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 620. [2021-10-08 17:14:01,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 619 states have (on average 3.7140549273021) internal successors, (2299), 619 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:01,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 2299 transitions. [2021-10-08 17:14:01,755 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 2299 transitions. Word has length 22 [2021-10-08 17:14:01,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:01,755 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 2299 transitions. [2021-10-08 17:14:01,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:01,756 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 2299 transitions. [2021-10-08 17:14:01,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:14:01,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:01,759 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:01,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:01,972 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 [2021-10-08 17:14:01,973 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:01,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:01,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1720077631, now seen corresponding path program 4 times [2021-10-08 17:14:01,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:01,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363051405] [2021-10-08 17:14:01,975 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:14:01,976 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:01,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:01,977 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) [2021-10-08 17:14:01,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-08 17:14:02,169 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:14:02,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:02,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:14:02,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:02,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:03,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:03,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363051405] [2021-10-08 17:14:03,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363051405] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:03,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:03,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:14:03,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817540631] [2021-10-08 17:14:03,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:14:03,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:03,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:14:03,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:14:03,398 INFO L87 Difference]: Start difference. First operand 620 states and 2299 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:07,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:07,022 INFO L93 Difference]: Finished difference Result 1779 states and 6203 transitions. [2021-10-08 17:14:07,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-08 17:14:07,023 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:14:07,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:07,040 INFO L225 Difference]: With dead ends: 1779 [2021-10-08 17:14:07,041 INFO L226 Difference]: Without dead ends: 1772 [2021-10-08 17:14:07,042 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 3122.4ms TimeCoverageRelationStatistics Valid=770, Invalid=3012, Unknown=0, NotChecked=0, Total=3782 [2021-10-08 17:14:07,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2021-10-08 17:14:07,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 870. [2021-10-08 17:14:07,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 3.942462600690449) internal successors, (3426), 869 states have internal predecessors, (3426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:07,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 3426 transitions. [2021-10-08 17:14:07,096 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 3426 transitions. Word has length 22 [2021-10-08 17:14:07,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:07,096 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 3426 transitions. [2021-10-08 17:14:07,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:07,097 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 3426 transitions. [2021-10-08 17:14:07,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:14:07,101 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:07,101 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:07,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:07,314 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 [2021-10-08 17:14:07,314 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:07,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:07,316 INFO L82 PathProgramCache]: Analyzing trace with hash 864682851, now seen corresponding path program 5 times [2021-10-08 17:14:07,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:07,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761732769] [2021-10-08 17:14:07,317 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:14:07,317 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:07,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:07,318 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) [2021-10-08 17:14:07,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-08 17:14:07,540 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:14:07,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:07,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 17:14:07,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:08,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:08,768 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:08,768 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:08,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761732769] [2021-10-08 17:14:08,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761732769] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:08,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:08,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-08 17:14:08,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843436642] [2021-10-08 17:14:08,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:14:08,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:08,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:14:08,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:14:08,772 INFO L87 Difference]: Start difference. First operand 870 states and 3426 transitions. Second operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:15,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:15,747 INFO L93 Difference]: Finished difference Result 3751 states and 13135 transitions. [2021-10-08 17:14:15,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-10-08 17:14:15,748 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:14:15,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:15,786 INFO L225 Difference]: With dead ends: 3751 [2021-10-08 17:14:15,786 INFO L226 Difference]: Without dead ends: 3737 [2021-10-08 17:14:15,789 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2860 ImplicationChecksByTransitivity, 6294.4ms TimeCoverageRelationStatistics Valid=1736, Invalid=7194, Unknown=0, NotChecked=0, Total=8930 [2021-10-08 17:14:15,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-10-08 17:14:15,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 1372. [2021-10-08 17:14:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1371 states have (on average 4.200583515681984) internal successors, (5759), 1371 states have internal predecessors, (5759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:15,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 5759 transitions. [2021-10-08 17:14:15,888 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 5759 transitions. Word has length 22 [2021-10-08 17:14:15,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:15,888 INFO L470 AbstractCegarLoop]: Abstraction has 1372 states and 5759 transitions. [2021-10-08 17:14:15,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:15,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 5759 transitions. [2021-10-08 17:14:15,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:14:15,895 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:15,895 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:15,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:16,108 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 [2021-10-08 17:14:16,109 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:16,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:16,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1634060657, now seen corresponding path program 6 times [2021-10-08 17:14:16,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:16,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002556461] [2021-10-08 17:14:16,111 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:14:16,111 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:16,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:16,113 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) [2021-10-08 17:14:16,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-08 17:14:16,395 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:14:16,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:16,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:14:16,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:16,837 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:16,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:17,593 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:17,593 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:17,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002556461] [2021-10-08 17:14:17,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002556461] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:17,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:17,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:14:17,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833776378] [2021-10-08 17:14:17,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:14:17,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:17,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:14:17,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:14:17,595 INFO L87 Difference]: Start difference. First operand 1372 states and 5759 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:20,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:20,296 INFO L93 Difference]: Finished difference Result 3117 states and 12305 transitions. [2021-10-08 17:14:20,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 17:14:20,297 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:14:20,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:20,328 INFO L225 Difference]: With dead ends: 3117 [2021-10-08 17:14:20,328 INFO L226 Difference]: Without dead ends: 3110 [2021-10-08 17:14:20,329 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 2554.0ms TimeCoverageRelationStatistics Valid=547, Invalid=1805, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 17:14:20,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2021-10-08 17:14:20,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 1612. [2021-10-08 17:14:20,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1611 states have (on average 4.248913718187461) internal successors, (6845), 1611 states have internal predecessors, (6845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:20,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 6845 transitions. [2021-10-08 17:14:20,450 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 6845 transitions. Word has length 22 [2021-10-08 17:14:20,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:20,450 INFO L470 AbstractCegarLoop]: Abstraction has 1612 states and 6845 transitions. [2021-10-08 17:14:20,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:20,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 6845 transitions. [2021-10-08 17:14:20,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:14:20,458 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:20,459 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:20,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:20,672 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 [2021-10-08 17:14:20,673 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:20,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:20,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1047657359, now seen corresponding path program 7 times [2021-10-08 17:14:20,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:20,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561760869] [2021-10-08 17:14:20,675 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:14:20,675 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:20,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:20,677 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) [2021-10-08 17:14:20,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-08 17:14:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:20,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:14:20,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:21,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:22,234 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:22,234 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:22,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561760869] [2021-10-08 17:14:22,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561760869] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:22,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:22,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:14:22,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120669673] [2021-10-08 17:14:22,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:14:22,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:22,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:14:22,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:14:22,238 INFO L87 Difference]: Start difference. First operand 1612 states and 6845 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:26,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:26,422 INFO L93 Difference]: Finished difference Result 4589 states and 17958 transitions. [2021-10-08 17:14:26,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-08 17:14:26,422 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:14:26,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:26,478 INFO L225 Difference]: With dead ends: 4589 [2021-10-08 17:14:26,478 INFO L226 Difference]: Without dead ends: 4582 [2021-10-08 17:14:26,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 3772.4ms TimeCoverageRelationStatistics Valid=723, Invalid=2583, Unknown=0, NotChecked=0, Total=3306 [2021-10-08 17:14:26,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4582 states. [2021-10-08 17:14:26,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4582 to 1846. [2021-10-08 17:14:26,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1845 states have (on average 4.301355013550135) internal successors, (7936), 1845 states have internal predecessors, (7936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:26,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 7936 transitions. [2021-10-08 17:14:26,655 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 7936 transitions. Word has length 22 [2021-10-08 17:14:26,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:26,656 INFO L470 AbstractCegarLoop]: Abstraction has 1846 states and 7936 transitions. [2021-10-08 17:14:26,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:26,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 7936 transitions. [2021-10-08 17:14:26,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:14:26,664 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:26,665 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:26,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:26,878 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 [2021-10-08 17:14:26,879 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:26,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:26,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1937453481, now seen corresponding path program 8 times [2021-10-08 17:14:26,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:26,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986779479] [2021-10-08 17:14:26,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:14:26,882 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:26,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:26,883 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) [2021-10-08 17:14:26,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-08 17:14:27,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:14:27,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:27,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:14:27,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:27,738 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:27,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:28,595 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:28,595 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:28,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986779479] [2021-10-08 17:14:28,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986779479] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:28,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:28,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:14:28,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801800135] [2021-10-08 17:14:28,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:14:28,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:28,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:14:28,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:14:28,598 INFO L87 Difference]: Start difference. First operand 1846 states and 7936 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:33,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:33,083 INFO L93 Difference]: Finished difference Result 4720 states and 18069 transitions. [2021-10-08 17:14:33,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-08 17:14:33,083 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:14:33,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:33,109 INFO L225 Difference]: With dead ends: 4720 [2021-10-08 17:14:33,110 INFO L226 Difference]: Without dead ends: 4706 [2021-10-08 17:14:33,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 4147.3ms TimeCoverageRelationStatistics Valid=825, Invalid=3081, Unknown=0, NotChecked=0, Total=3906 [2021-10-08 17:14:33,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4706 states. [2021-10-08 17:14:33,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4706 to 1968. [2021-10-08 17:14:33,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1967 states have (on average 4.368581596339603) internal successors, (8593), 1967 states have internal predecessors, (8593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:33,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 8593 transitions. [2021-10-08 17:14:33,259 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 8593 transitions. Word has length 22 [2021-10-08 17:14:33,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:33,260 INFO L470 AbstractCegarLoop]: Abstraction has 1968 states and 8593 transitions. [2021-10-08 17:14:33,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:33,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 8593 transitions. [2021-10-08 17:14:33,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:14:33,268 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:33,268 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:33,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:33,484 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 [2021-10-08 17:14:33,485 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:33,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:33,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1361166689, now seen corresponding path program 9 times [2021-10-08 17:14:33,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:33,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062938327] [2021-10-08 17:14:33,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:14:33,486 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:33,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:33,487 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) [2021-10-08 17:14:33,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-08 17:14:33,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:14:33,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:33,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:14:33,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:34,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:35,077 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:14:35,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:35,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062938327] [2021-10-08 17:14:35,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062938327] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:35,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:35,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-08 17:14:35,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083453730] [2021-10-08 17:14:35,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:14:35,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:35,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:14:35,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:14:35,080 INFO L87 Difference]: Start difference. First operand 1968 states and 8593 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:37,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:37,535 INFO L93 Difference]: Finished difference Result 4769 states and 18996 transitions. [2021-10-08 17:14:37,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 17:14:37,536 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:14:37,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:37,561 INFO L225 Difference]: With dead ends: 4769 [2021-10-08 17:14:37,562 INFO L226 Difference]: Without dead ends: 4762 [2021-10-08 17:14:37,563 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 2344.1ms TimeCoverageRelationStatistics Valid=484, Invalid=1408, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 17:14:37,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4762 states. [2021-10-08 17:14:37,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4762 to 2198. [2021-10-08 17:14:37,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2198 states, 2197 states have (on average 4.41647701411015) internal successors, (9703), 2197 states have internal predecessors, (9703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:37,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 9703 transitions. [2021-10-08 17:14:37,722 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 9703 transitions. Word has length 22 [2021-10-08 17:14:37,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:37,723 INFO L470 AbstractCegarLoop]: Abstraction has 2198 states and 9703 transitions. [2021-10-08 17:14:37,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:37,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 9703 transitions. [2021-10-08 17:14:37,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:14:37,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:37,732 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:37,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:37,946 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 [2021-10-08 17:14:37,947 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:37,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:37,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1942371879, now seen corresponding path program 10 times [2021-10-08 17:14:37,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:37,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401791087] [2021-10-08 17:14:37,948 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:14:37,948 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:37,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:37,950 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) [2021-10-08 17:14:37,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-08 17:14:38,318 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:14:38,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:38,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:14:38,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:38,866 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:38,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:39,636 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:14:39,637 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:39,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401791087] [2021-10-08 17:14:39,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [401791087] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:39,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:39,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-08 17:14:39,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432119158] [2021-10-08 17:14:39,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:14:39,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:39,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:14:39,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:14:39,639 INFO L87 Difference]: Start difference. First operand 2198 states and 9703 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:42,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:42,072 INFO L93 Difference]: Finished difference Result 4832 states and 19624 transitions. [2021-10-08 17:14:42,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 17:14:42,073 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:14:42,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:42,097 INFO L225 Difference]: With dead ends: 4832 [2021-10-08 17:14:42,097 INFO L226 Difference]: Without dead ends: 4818 [2021-10-08 17:14:42,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 2330.4ms TimeCoverageRelationStatistics Valid=424, Invalid=1136, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 17:14:42,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4818 states. [2021-10-08 17:14:42,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4818 to 2388. [2021-10-08 17:14:42,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2388 states, 2387 states have (on average 4.475073313782991) internal successors, (10682), 2387 states have internal predecessors, (10682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:42,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 10682 transitions. [2021-10-08 17:14:42,263 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 10682 transitions. Word has length 22 [2021-10-08 17:14:42,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:42,263 INFO L470 AbstractCegarLoop]: Abstraction has 2388 states and 10682 transitions. [2021-10-08 17:14:42,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:42,264 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 10682 transitions. [2021-10-08 17:14:42,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:14:42,274 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:42,274 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:42,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-10-08 17:14:42,488 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 [2021-10-08 17:14:42,488 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:42,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:42,489 INFO L82 PathProgramCache]: Analyzing trace with hash 316441863, now seen corresponding path program 11 times [2021-10-08 17:14:42,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:42,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703286280] [2021-10-08 17:14:42,490 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:14:42,490 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:42,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:42,491 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) [2021-10-08 17:14:42,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-08 17:14:42,952 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:14:42,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:42,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:14:42,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:43,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:44,350 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:44,350 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:44,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703286280] [2021-10-08 17:14:44,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703286280] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:44,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:44,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:14:44,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073448881] [2021-10-08 17:14:44,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:14:44,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:44,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:14:44,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:14:44,352 INFO L87 Difference]: Start difference. First operand 2388 states and 10682 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:48,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:48,153 INFO L93 Difference]: Finished difference Result 5357 states and 21969 transitions. [2021-10-08 17:14:48,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-08 17:14:48,154 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:14:48,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:48,172 INFO L225 Difference]: With dead ends: 5357 [2021-10-08 17:14:48,172 INFO L226 Difference]: Without dead ends: 5350 [2021-10-08 17:14:48,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 3662.8ms TimeCoverageRelationStatistics Valid=681, Invalid=2289, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 17:14:48,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5350 states. [2021-10-08 17:14:48,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5350 to 2590. [2021-10-08 17:14:48,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2590 states, 2589 states have (on average 4.495944380069525) internal successors, (11640), 2589 states have internal predecessors, (11640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:48,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2590 states to 2590 states and 11640 transitions. [2021-10-08 17:14:48,355 INFO L78 Accepts]: Start accepts. Automaton has 2590 states and 11640 transitions. Word has length 22 [2021-10-08 17:14:48,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:48,356 INFO L470 AbstractCegarLoop]: Abstraction has 2590 states and 11640 transitions. [2021-10-08 17:14:48,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:48,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2590 states and 11640 transitions. [2021-10-08 17:14:48,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:14:48,368 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:48,368 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:48,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:48,582 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 [2021-10-08 17:14:48,583 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:48,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:48,584 INFO L82 PathProgramCache]: Analyzing trace with hash -2044003705, now seen corresponding path program 12 times [2021-10-08 17:14:48,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:48,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542449981] [2021-10-08 17:14:48,586 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:14:48,586 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:48,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:48,587 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) [2021-10-08 17:14:48,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-08 17:14:49,029 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:14:49,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:49,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:14:49,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:49,514 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:49,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:50,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:50,565 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:50,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542449981] [2021-10-08 17:14:50,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542449981] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:50,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:50,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:14:50,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139993617] [2021-10-08 17:14:50,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:14:50,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:50,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:14:50,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:14:50,567 INFO L87 Difference]: Start difference. First operand 2590 states and 11640 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:56,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:56,064 INFO L93 Difference]: Finished difference Result 5827 states and 23159 transitions. [2021-10-08 17:14:56,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-08 17:14:56,064 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:14:56,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:56,089 INFO L225 Difference]: With dead ends: 5827 [2021-10-08 17:14:56,089 INFO L226 Difference]: Without dead ends: 5820 [2021-10-08 17:14:56,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 5242.0ms TimeCoverageRelationStatistics Valid=974, Invalid=3316, Unknown=0, NotChecked=0, Total=4290 [2021-10-08 17:14:56,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5820 states. [2021-10-08 17:14:56,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5820 to 2804. [2021-10-08 17:14:56,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2804 states, 2803 states have (on average 4.534427399215127) internal successors, (12710), 2803 states have internal predecessors, (12710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:56,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2804 states to 2804 states and 12710 transitions. [2021-10-08 17:14:56,291 INFO L78 Accepts]: Start accepts. Automaton has 2804 states and 12710 transitions. Word has length 22 [2021-10-08 17:14:56,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:56,291 INFO L470 AbstractCegarLoop]: Abstraction has 2804 states and 12710 transitions. [2021-10-08 17:14:56,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:56,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2804 states and 12710 transitions. [2021-10-08 17:14:56,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:14:56,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:56,305 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:56,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:56,518 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 [2021-10-08 17:14:56,519 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:56,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:56,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1715266783, now seen corresponding path program 13 times [2021-10-08 17:14:56,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:56,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470777235] [2021-10-08 17:14:56,520 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:14:56,521 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:56,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:56,522 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) [2021-10-08 17:14:56,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-08 17:14:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:56,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:14:56,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:57,450 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:57,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:58,300 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:58,301 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:58,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470777235] [2021-10-08 17:14:58,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470777235] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:58,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:58,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:14:58,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732720775] [2021-10-08 17:14:58,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:14:58,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:58,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:14:58,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:14:58,302 INFO L87 Difference]: Start difference. First operand 2804 states and 12710 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:01,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:01,876 INFO L93 Difference]: Finished difference Result 6041 states and 25180 transitions. [2021-10-08 17:15:01,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-08 17:15:01,876 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:15:01,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:01,903 INFO L225 Difference]: With dead ends: 6041 [2021-10-08 17:15:01,904 INFO L226 Difference]: Without dead ends: 6034 [2021-10-08 17:15:01,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 3431.2ms TimeCoverageRelationStatistics Valid=667, Invalid=2195, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 17:15:01,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6034 states. [2021-10-08 17:15:02,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6034 to 2980. [2021-10-08 17:15:02,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2980 states, 2979 states have (on average 4.55824102047667) internal successors, (13579), 2979 states have internal predecessors, (13579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:02,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 13579 transitions. [2021-10-08 17:15:02,072 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 13579 transitions. Word has length 22 [2021-10-08 17:15:02,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:02,073 INFO L470 AbstractCegarLoop]: Abstraction has 2980 states and 13579 transitions. [2021-10-08 17:15:02,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:02,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 13579 transitions. [2021-10-08 17:15:02,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:15:02,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:02,085 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:15:02,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-08 17:15:02,301 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 [2021-10-08 17:15:02,301 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:15:02,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:02,302 INFO L82 PathProgramCache]: Analyzing trace with hash -723838055, now seen corresponding path program 14 times [2021-10-08 17:15:02,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:02,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530123883] [2021-10-08 17:15:02,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:15:02,303 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:02,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:02,305 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) [2021-10-08 17:15:02,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-08 17:15:02,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:15:02,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:15:02,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:15:02,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:03,447 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:03,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:04,232 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:04,232 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:04,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530123883] [2021-10-08 17:15:04,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530123883] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:15:04,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:15:04,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:15:04,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677930939] [2021-10-08 17:15:04,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:15:04,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:04,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:15:04,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:15:04,235 INFO L87 Difference]: Start difference. First operand 2980 states and 13579 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:07,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:07,722 INFO L93 Difference]: Finished difference Result 6026 states and 25296 transitions. [2021-10-08 17:15:07,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 17:15:07,722 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:15:07,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:07,761 INFO L225 Difference]: With dead ends: 6026 [2021-10-08 17:15:07,761 INFO L226 Difference]: Without dead ends: 6012 [2021-10-08 17:15:07,762 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 3395.3ms TimeCoverageRelationStatistics Valid=629, Invalid=1921, Unknown=0, NotChecked=0, Total=2550 [2021-10-08 17:15:07,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6012 states. [2021-10-08 17:15:07,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6012 to 3066. [2021-10-08 17:15:07,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3066 states, 3065 states have (on average 4.592495921696575) internal successors, (14076), 3065 states have internal predecessors, (14076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3066 states to 3066 states and 14076 transitions. [2021-10-08 17:15:07,937 INFO L78 Accepts]: Start accepts. Automaton has 3066 states and 14076 transitions. Word has length 22 [2021-10-08 17:15:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:07,938 INFO L470 AbstractCegarLoop]: Abstraction has 3066 states and 14076 transitions. [2021-10-08 17:15:07,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3066 states and 14076 transitions. [2021-10-08 17:15:07,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:15:07,953 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:07,954 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:15:07,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-08 17:15:08,169 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 [2021-10-08 17:15:08,169 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:15:08,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:08,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1330822183, now seen corresponding path program 15 times [2021-10-08 17:15:08,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:08,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957875470] [2021-10-08 17:15:08,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:15:08,173 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:08,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:08,175 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) [2021-10-08 17:15:08,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-08 17:15:08,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:15:08,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:15:08,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:15:08,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:09,361 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:09,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:10,243 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:10,243 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:10,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957875470] [2021-10-08 17:15:10,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957875470] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:15:10,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:15:10,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:15:10,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821669397] [2021-10-08 17:15:10,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:15:10,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:10,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:15:10,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:15:10,246 INFO L87 Difference]: Start difference. First operand 3066 states and 14076 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:14,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:14,746 INFO L93 Difference]: Finished difference Result 6095 states and 25265 transitions. [2021-10-08 17:15:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-08 17:15:14,747 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:15:14,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:14,767 INFO L225 Difference]: With dead ends: 6095 [2021-10-08 17:15:14,767 INFO L226 Difference]: Without dead ends: 6088 [2021-10-08 17:15:14,768 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 4342.6ms TimeCoverageRelationStatistics Valid=749, Invalid=2331, Unknown=0, NotChecked=0, Total=3080 [2021-10-08 17:15:14,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6088 states. [2021-10-08 17:15:14,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6088 to 3204. [2021-10-08 17:15:14,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3204 states, 3203 states have (on average 4.6356540743053385) internal successors, (14848), 3203 states have internal predecessors, (14848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:14,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3204 states to 3204 states and 14848 transitions. [2021-10-08 17:15:14,964 INFO L78 Accepts]: Start accepts. Automaton has 3204 states and 14848 transitions. Word has length 22 [2021-10-08 17:15:14,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:14,964 INFO L470 AbstractCegarLoop]: Abstraction has 3204 states and 14848 transitions. [2021-10-08 17:15:14,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:14,964 INFO L276 IsEmpty]: Start isEmpty. Operand 3204 states and 14848 transitions. [2021-10-08 17:15:14,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:15:14,978 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:14,978 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:15:14,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-08 17:15:15,192 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 [2021-10-08 17:15:15,193 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:15:15,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:15,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1374585471, now seen corresponding path program 16 times [2021-10-08 17:15:15,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:15,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784858879] [2021-10-08 17:15:15,195 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:15:15,195 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:15,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:15,196 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) [2021-10-08 17:15:15,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-08 17:15:15,788 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:15:15,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:15:15,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:15:15,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:16,339 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:16,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:17,172 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:17,172 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:17,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784858879] [2021-10-08 17:15:17,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784858879] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:15:17,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:15:17,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:15:17,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890222918] [2021-10-08 17:15:17,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:15:17,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:17,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:15:17,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:15:17,174 INFO L87 Difference]: Start difference. First operand 3204 states and 14848 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:21,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:21,874 INFO L93 Difference]: Finished difference Result 6470 states and 26928 transitions. [2021-10-08 17:15:21,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-08 17:15:21,874 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:15:21,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:21,897 INFO L225 Difference]: With dead ends: 6470 [2021-10-08 17:15:21,897 INFO L226 Difference]: Without dead ends: 6456 [2021-10-08 17:15:21,898 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 4476.8ms TimeCoverageRelationStatistics Valid=754, Invalid=2438, Unknown=0, NotChecked=0, Total=3192 [2021-10-08 17:15:21,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2021-10-08 17:15:22,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 3288. [2021-10-08 17:15:22,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3288 states, 3287 states have (on average 4.672649832674171) internal successors, (15359), 3287 states have internal predecessors, (15359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:22,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3288 states to 3288 states and 15359 transitions. [2021-10-08 17:15:22,074 INFO L78 Accepts]: Start accepts. Automaton has 3288 states and 15359 transitions. Word has length 22 [2021-10-08 17:15:22,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:22,074 INFO L470 AbstractCegarLoop]: Abstraction has 3288 states and 15359 transitions. [2021-10-08 17:15:22,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:22,075 INFO L276 IsEmpty]: Start isEmpty. Operand 3288 states and 15359 transitions. [2021-10-08 17:15:22,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:15:22,087 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:22,088 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:15:22,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-08 17:15:22,296 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 [2021-10-08 17:15:22,297 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:15:22,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:22,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1572184091, now seen corresponding path program 17 times [2021-10-08 17:15:22,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:22,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965769714] [2021-10-08 17:15:22,299 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:15:22,300 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:22,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:22,301 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) [2021-10-08 17:15:22,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-08 17:15:22,923 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:15:22,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:15:22,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:15:22,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:23,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:24,195 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:15:24,196 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:24,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965769714] [2021-10-08 17:15:24,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965769714] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:15:24,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:15:24,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-08 17:15:24,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547059619] [2021-10-08 17:15:24,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:15:24,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:24,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:15:24,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:15:24,198 INFO L87 Difference]: Start difference. First operand 3288 states and 15359 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:26,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:26,812 INFO L93 Difference]: Finished difference Result 6023 states and 25576 transitions. [2021-10-08 17:15:26,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 17:15:26,812 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:15:26,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:26,831 INFO L225 Difference]: With dead ends: 6023 [2021-10-08 17:15:26,831 INFO L226 Difference]: Without dead ends: 6016 [2021-10-08 17:15:26,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 2438.9ms TimeCoverageRelationStatistics Valid=493, Invalid=1577, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 17:15:26,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6016 states. [2021-10-08 17:15:26,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6016 to 3474. [2021-10-08 17:15:26,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3474 states, 3473 states have (on average 4.633458105384394) internal successors, (16092), 3473 states have internal predecessors, (16092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:26,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3474 states to 3474 states and 16092 transitions. [2021-10-08 17:15:26,971 INFO L78 Accepts]: Start accepts. Automaton has 3474 states and 16092 transitions. Word has length 22 [2021-10-08 17:15:26,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:26,972 INFO L470 AbstractCegarLoop]: Abstraction has 3474 states and 16092 transitions. [2021-10-08 17:15:26,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:26,972 INFO L276 IsEmpty]: Start isEmpty. Operand 3474 states and 16092 transitions. [2021-10-08 17:15:26,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:15:26,986 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:26,986 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:15:27,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-08 17:15:27,200 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 [2021-10-08 17:15:27,201 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:15:27,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:27,201 INFO L82 PathProgramCache]: Analyzing trace with hash -788261477, now seen corresponding path program 18 times [2021-10-08 17:15:27,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:27,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798411070] [2021-10-08 17:15:27,202 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:15:27,203 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:27,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:27,204 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) [2021-10-08 17:15:27,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-08 17:15:27,937 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:15:27,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:15:27,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:15:27,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:28,445 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:28,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:29,184 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:29,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798411070] [2021-10-08 17:15:29,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798411070] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:15:29,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:15:29,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:15:29,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481033954] [2021-10-08 17:15:29,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:15:29,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:29,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:15:29,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:15:29,186 INFO L87 Difference]: Start difference. First operand 3474 states and 16092 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:33,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:33,938 INFO L93 Difference]: Finished difference Result 7243 states and 29429 transitions. [2021-10-08 17:15:33,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-08 17:15:33,939 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:15:33,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:33,960 INFO L225 Difference]: With dead ends: 7243 [2021-10-08 17:15:33,960 INFO L226 Difference]: Without dead ends: 7236 [2021-10-08 17:15:33,962 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1387 ImplicationChecksByTransitivity, 4456.2ms TimeCoverageRelationStatistics Valid=1054, Invalid=3916, Unknown=0, NotChecked=0, Total=4970 [2021-10-08 17:15:33,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7236 states. [2021-10-08 17:15:34,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7236 to 3788. [2021-10-08 17:15:34,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3788 states, 3787 states have (on average 4.587800369685767) internal successors, (17374), 3787 states have internal predecessors, (17374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:34,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3788 states to 3788 states and 17374 transitions. [2021-10-08 17:15:34,115 INFO L78 Accepts]: Start accepts. Automaton has 3788 states and 17374 transitions. Word has length 22 [2021-10-08 17:15:34,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:34,115 INFO L470 AbstractCegarLoop]: Abstraction has 3788 states and 17374 transitions. [2021-10-08 17:15:34,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:34,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3788 states and 17374 transitions. [2021-10-08 17:15:34,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:15:34,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:34,131 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:15:34,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-08 17:15:34,344 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 [2021-10-08 17:15:34,345 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:15:34,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:34,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1261932959, now seen corresponding path program 19 times [2021-10-08 17:15:34,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:34,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903541235] [2021-10-08 17:15:34,346 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:15:34,347 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:34,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:34,348 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) [2021-10-08 17:15:34,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-08 17:15:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:15:35,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:15:35,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:35,564 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:35,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:36,249 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:36,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903541235] [2021-10-08 17:15:36,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903541235] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:15:36,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:15:36,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:15:36,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462208681] [2021-10-08 17:15:36,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:15:36,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:36,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:15:36,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:15:36,251 INFO L87 Difference]: Start difference. First operand 3788 states and 17374 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:41,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:41,301 INFO L93 Difference]: Finished difference Result 7117 states and 29039 transitions. [2021-10-08 17:15:41,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-08 17:15:41,302 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:15:41,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:41,324 INFO L225 Difference]: With dead ends: 7117 [2021-10-08 17:15:41,324 INFO L226 Difference]: Without dead ends: 7096 [2021-10-08 17:15:41,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1290 ImplicationChecksByTransitivity, 4731.1ms TimeCoverageRelationStatistics Valid=971, Invalid=3721, Unknown=0, NotChecked=0, Total=4692 [2021-10-08 17:15:41,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7096 states. [2021-10-08 17:15:41,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7096 to 3962. [2021-10-08 17:15:41,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3962 states, 3961 states have (on average 4.596818985104772) internal successors, (18208), 3961 states have internal predecessors, (18208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:41,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3962 states to 3962 states and 18208 transitions. [2021-10-08 17:15:41,533 INFO L78 Accepts]: Start accepts. Automaton has 3962 states and 18208 transitions. Word has length 22 [2021-10-08 17:15:41,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:41,533 INFO L470 AbstractCegarLoop]: Abstraction has 3962 states and 18208 transitions. [2021-10-08 17:15:41,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:41,534 INFO L276 IsEmpty]: Start isEmpty. Operand 3962 states and 18208 transitions. [2021-10-08 17:15:41,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:15:41,549 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:41,549 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:15:41,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-08 17:15:41,763 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 [2021-10-08 17:15:41,764 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:15:41,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:41,765 INFO L82 PathProgramCache]: Analyzing trace with hash 849438523, now seen corresponding path program 20 times [2021-10-08 17:15:41,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:41,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512584568] [2021-10-08 17:15:41,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:15:41,767 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:41,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:41,767 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) [2021-10-08 17:15:41,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-08 17:15:42,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:15:42,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:15:42,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:15:42,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:42,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:42,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:43,828 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:43,829 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:43,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512584568] [2021-10-08 17:15:43,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512584568] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:15:43,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:15:43,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:15:43,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550029534] [2021-10-08 17:15:43,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:15:43,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:43,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:15:43,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:15:43,832 INFO L87 Difference]: Start difference. First operand 3962 states and 18208 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:47,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:47,618 INFO L93 Difference]: Finished difference Result 7765 states and 32911 transitions. [2021-10-08 17:15:47,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 17:15:47,619 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:15:47,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:47,645 INFO L225 Difference]: With dead ends: 7765 [2021-10-08 17:15:47,645 INFO L226 Difference]: Without dead ends: 7758 [2021-10-08 17:15:47,645 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 3628.3ms TimeCoverageRelationStatistics Valid=604, Invalid=2048, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 17:15:47,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7758 states. [2021-10-08 17:15:47,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7758 to 4132. [2021-10-08 17:15:47,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4132 states, 4131 states have (on average 4.614137012829823) internal successors, (19061), 4131 states have internal predecessors, (19061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:47,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4132 states to 4132 states and 19061 transitions. [2021-10-08 17:15:47,802 INFO L78 Accepts]: Start accepts. Automaton has 4132 states and 19061 transitions. Word has length 22 [2021-10-08 17:15:47,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:47,802 INFO L470 AbstractCegarLoop]: Abstraction has 4132 states and 19061 transitions. [2021-10-08 17:15:47,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:47,802 INFO L276 IsEmpty]: Start isEmpty. Operand 4132 states and 19061 transitions. [2021-10-08 17:15:47,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:15:47,816 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:47,816 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:15:47,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-08 17:15:48,017 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 [2021-10-08 17:15:48,017 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:15:48,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:48,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1511007045, now seen corresponding path program 21 times [2021-10-08 17:15:48,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:48,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257060592] [2021-10-08 17:15:48,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:15:48,020 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:48,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:48,021 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) [2021-10-08 17:15:48,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-08 17:15:48,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:15:48,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:15:48,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:15:48,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:49,335 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:49,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:50,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:50,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257060592] [2021-10-08 17:15:50,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1257060592] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:15:50,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:15:50,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:15:50,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494153293] [2021-10-08 17:15:50,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:15:50,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:50,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:15:50,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:15:50,167 INFO L87 Difference]: Start difference. First operand 4132 states and 19061 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:55,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:55,203 INFO L93 Difference]: Finished difference Result 8083 states and 33776 transitions. [2021-10-08 17:15:55,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-08 17:15:55,204 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:15:55,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:55,231 INFO L225 Difference]: With dead ends: 8083 [2021-10-08 17:15:55,231 INFO L226 Difference]: Without dead ends: 8076 [2021-10-08 17:15:55,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 971 ImplicationChecksByTransitivity, 4734.7ms TimeCoverageRelationStatistics Valid=875, Invalid=3031, Unknown=0, NotChecked=0, Total=3906 [2021-10-08 17:15:55,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8076 states. [2021-10-08 17:15:55,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8076 to 4252. [2021-10-08 17:15:55,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4252 states, 4251 states have (on average 4.6438485062338275) internal successors, (19741), 4251 states have internal predecessors, (19741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:55,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4252 states to 4252 states and 19741 transitions. [2021-10-08 17:15:55,513 INFO L78 Accepts]: Start accepts. Automaton has 4252 states and 19741 transitions. Word has length 22 [2021-10-08 17:15:55,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:55,514 INFO L470 AbstractCegarLoop]: Abstraction has 4252 states and 19741 transitions. [2021-10-08 17:15:55,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:55,514 INFO L276 IsEmpty]: Start isEmpty. Operand 4252 states and 19741 transitions. [2021-10-08 17:15:55,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:15:55,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:55,532 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:15:55,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-08 17:15:55,746 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 [2021-10-08 17:15:55,746 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:15:55,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:55,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1428080409, now seen corresponding path program 22 times [2021-10-08 17:15:55,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:55,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907917840] [2021-10-08 17:15:55,748 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:15:55,748 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:55,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:55,749 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) [2021-10-08 17:15:55,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-08 17:15:56,487 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:15:56,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:15:56,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:15:56,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:56,999 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:56,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:57,758 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:15:57,758 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:57,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907917840] [2021-10-08 17:15:57,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907917840] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:15:57,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:15:57,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-08 17:15:57,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604056204] [2021-10-08 17:15:57,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:15:57,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:57,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:15:57,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:15:57,761 INFO L87 Difference]: Start difference. First operand 4252 states and 19741 transitions. Second operand has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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) [2021-10-08 17:16:00,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:16:00,183 INFO L93 Difference]: Finished difference Result 7638 states and 32711 transitions. [2021-10-08 17:16:00,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 17:16:00,183 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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) Word has length 22 [2021-10-08 17:16:00,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:16:00,205 INFO L225 Difference]: With dead ends: 7638 [2021-10-08 17:16:00,206 INFO L226 Difference]: Without dead ends: 7624 [2021-10-08 17:16:00,206 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2375.8ms TimeCoverageRelationStatistics Valid=434, Invalid=1126, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 17:16:00,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7624 states. [2021-10-08 17:16:00,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7624 to 4428. [2021-10-08 17:16:00,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4428 states, 4427 states have (on average 4.667946690761238) internal successors, (20665), 4427 states have internal predecessors, (20665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:00,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 20665 transitions. [2021-10-08 17:16:00,476 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 20665 transitions. Word has length 22 [2021-10-08 17:16:00,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:16:00,477 INFO L470 AbstractCegarLoop]: Abstraction has 4428 states and 20665 transitions. [2021-10-08 17:16:00,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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) [2021-10-08 17:16:00,477 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 20665 transitions. [2021-10-08 17:16:00,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:16:00,497 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:16:00,497 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:16:00,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-08 17:16:00,712 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 [2021-10-08 17:16:00,712 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:16:00,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:16:00,713 INFO L82 PathProgramCache]: Analyzing trace with hash -797825523, now seen corresponding path program 23 times [2021-10-08 17:16:00,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:16:00,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318732020] [2021-10-08 17:16:00,714 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:16:00,714 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:16:00,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:16:00,715 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) [2021-10-08 17:16:00,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-08 17:16:01,518 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:16:01,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:16:01,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:16:01,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:16:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:01,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:16:03,212 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:03,213 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:16:03,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318732020] [2021-10-08 17:16:03,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318732020] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:16:03,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:16:03,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 17:16:03,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783358081] [2021-10-08 17:16:03,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:16:03,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:16:03,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:16:03,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:16:03,215 INFO L87 Difference]: Start difference. First operand 4428 states and 20665 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:07,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:16:07,520 INFO L93 Difference]: Finished difference Result 9816 states and 41759 transitions. [2021-10-08 17:16:07,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-08 17:16:07,520 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:16:07,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:16:07,554 INFO L225 Difference]: With dead ends: 9816 [2021-10-08 17:16:07,554 INFO L226 Difference]: Without dead ends: 9792 [2021-10-08 17:16:07,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 3951.4ms TimeCoverageRelationStatistics Valid=767, Invalid=2655, Unknown=0, NotChecked=0, Total=3422 [2021-10-08 17:16:07,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9792 states. [2021-10-08 17:16:07,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9792 to 5010. [2021-10-08 17:16:07,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5010 states, 5009 states have (on average 4.734278299061689) internal successors, (23714), 5009 states have internal predecessors, (23714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:07,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5010 states to 5010 states and 23714 transitions. [2021-10-08 17:16:07,794 INFO L78 Accepts]: Start accepts. Automaton has 5010 states and 23714 transitions. Word has length 22 [2021-10-08 17:16:07,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:16:07,794 INFO L470 AbstractCegarLoop]: Abstraction has 5010 states and 23714 transitions. [2021-10-08 17:16:07,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:07,795 INFO L276 IsEmpty]: Start isEmpty. Operand 5010 states and 23714 transitions. [2021-10-08 17:16:07,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:16:07,809 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:16:07,809 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:16:07,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-08 17:16:08,009 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 [2021-10-08 17:16:08,010 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:16:08,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:16:08,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1907582131, now seen corresponding path program 24 times [2021-10-08 17:16:08,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:16:08,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463145035] [2021-10-08 17:16:08,013 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:16:08,013 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:16:08,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:16:08,014 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) [2021-10-08 17:16:08,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-08 17:16:08,864 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:16:08,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:16:08,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:16:08,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:16:09,431 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:09,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:16:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:10,340 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:16:10,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463145035] [2021-10-08 17:16:10,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463145035] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:16:10,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:16:10,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:16:10,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554644887] [2021-10-08 17:16:10,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:16:10,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:16:10,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:16:10,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:16:10,343 INFO L87 Difference]: Start difference. First operand 5010 states and 23714 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:14,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:16:14,671 INFO L93 Difference]: Finished difference Result 10342 states and 44708 transitions. [2021-10-08 17:16:14,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-08 17:16:14,671 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:16:14,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:16:14,715 INFO L225 Difference]: With dead ends: 10342 [2021-10-08 17:16:14,716 INFO L226 Difference]: Without dead ends: 10328 [2021-10-08 17:16:14,717 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 4131.5ms TimeCoverageRelationStatistics Valid=767, Invalid=2425, Unknown=0, NotChecked=0, Total=3192 [2021-10-08 17:16:14,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10328 states. [2021-10-08 17:16:14,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10328 to 5390. [2021-10-08 17:16:14,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5390 states, 5389 states have (on average 4.801818519205789) internal successors, (25877), 5389 states have internal predecessors, (25877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:14,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 25877 transitions. [2021-10-08 17:16:14,995 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 25877 transitions. Word has length 22 [2021-10-08 17:16:14,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:16:14,995 INFO L470 AbstractCegarLoop]: Abstraction has 5390 states and 25877 transitions. [2021-10-08 17:16:14,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:14,995 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 25877 transitions. [2021-10-08 17:16:15,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:16:15,010 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:16:15,010 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:16:15,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-08 17:16:15,210 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 [2021-10-08 17:16:15,211 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:16:15,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:16:15,212 INFO L82 PathProgramCache]: Analyzing trace with hash 2007910331, now seen corresponding path program 25 times [2021-10-08 17:16:15,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:16:15,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62263534] [2021-10-08 17:16:15,213 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:16:15,213 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:16:15,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:16:15,215 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) [2021-10-08 17:16:15,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-08 17:16:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:16:16,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:16:16,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:16:16,673 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:16,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:16:17,350 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:16:17,350 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:16:17,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62263534] [2021-10-08 17:16:17,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62263534] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:16:17,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:16:17,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-08 17:16:17,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089116706] [2021-10-08 17:16:17,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:16:17,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:16:17,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:16:17,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:16:17,353 INFO L87 Difference]: Start difference. First operand 5390 states and 25877 transitions. Second operand has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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) [2021-10-08 17:16:20,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:16:20,684 INFO L93 Difference]: Finished difference Result 9188 states and 40007 transitions. [2021-10-08 17:16:20,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-08 17:16:20,685 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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) Word has length 22 [2021-10-08 17:16:20,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:16:20,715 INFO L225 Difference]: With dead ends: 9188 [2021-10-08 17:16:20,716 INFO L226 Difference]: Without dead ends: 9174 [2021-10-08 17:16:20,716 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 3082.8ms TimeCoverageRelationStatistics Valid=570, Invalid=1686, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 17:16:20,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9174 states. [2021-10-08 17:16:20,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9174 to 5618. [2021-10-08 17:16:20,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5618 states, 5617 states have (on average 4.821434929677764) internal successors, (27082), 5617 states have internal predecessors, (27082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:20,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5618 states to 5618 states and 27082 transitions. [2021-10-08 17:16:20,918 INFO L78 Accepts]: Start accepts. Automaton has 5618 states and 27082 transitions. Word has length 22 [2021-10-08 17:16:20,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:16:20,918 INFO L470 AbstractCegarLoop]: Abstraction has 5618 states and 27082 transitions. [2021-10-08 17:16:20,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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) [2021-10-08 17:16:20,919 INFO L276 IsEmpty]: Start isEmpty. Operand 5618 states and 27082 transitions. [2021-10-08 17:16:20,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:16:20,933 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:16:20,933 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:16:20,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-10-08 17:16:21,134 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 [2021-10-08 17:16:21,134 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:16:21,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:16:21,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1504681535, now seen corresponding path program 26 times [2021-10-08 17:16:21,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:16:21,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017166801] [2021-10-08 17:16:21,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:16:21,136 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:16:21,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:16:21,138 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) [2021-10-08 17:16:21,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-08 17:16:22,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:16:22,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:16:22,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 17:16:22,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:16:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:22,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:16:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:23,579 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:16:23,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017166801] [2021-10-08 17:16:23,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017166801] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:16:23,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:16:23,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 17:16:23,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674023567] [2021-10-08 17:16:23,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 17:16:23,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:16:23,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 17:16:23,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:16:23,581 INFO L87 Difference]: Start difference. First operand 5618 states and 27082 transitions. Second operand has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:25,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:16:25,403 INFO L93 Difference]: Finished difference Result 7433 states and 34318 transitions. [2021-10-08 17:16:25,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 17:16:25,403 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:16:25,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:16:25,429 INFO L225 Difference]: With dead ends: 7433 [2021-10-08 17:16:25,429 INFO L226 Difference]: Without dead ends: 7400 [2021-10-08 17:16:25,429 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1746.4ms TimeCoverageRelationStatistics Valid=323, Invalid=1159, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 17:16:25,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7400 states. [2021-10-08 17:16:25,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7400 to 6120. [2021-10-08 17:16:25,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6120 states, 6119 states have (on average 4.807484883150842) internal successors, (29417), 6119 states have internal predecessors, (29417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:25,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6120 states to 6120 states and 29417 transitions. [2021-10-08 17:16:25,609 INFO L78 Accepts]: Start accepts. Automaton has 6120 states and 29417 transitions. Word has length 22 [2021-10-08 17:16:25,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:16:25,609 INFO L470 AbstractCegarLoop]: Abstraction has 6120 states and 29417 transitions. [2021-10-08 17:16:25,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:25,609 INFO L276 IsEmpty]: Start isEmpty. Operand 6120 states and 29417 transitions. [2021-10-08 17:16:25,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:16:25,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:16:25,624 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:16:25,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-08 17:16:25,824 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 [2021-10-08 17:16:25,825 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:16:25,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:16:25,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1338971195, now seen corresponding path program 27 times [2021-10-08 17:16:25,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:16:25,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253378450] [2021-10-08 17:16:25,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:16:25,827 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:16:25,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:16:25,828 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) [2021-10-08 17:16:25,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-08 17:16:26,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:16:26,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:16:26,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:16:26,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:16:27,296 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:27,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:16:28,032 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:28,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:16:28,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253378450] [2021-10-08 17:16:28,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253378450] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:16:28,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:16:28,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:16:28,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894603994] [2021-10-08 17:16:28,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:16:28,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:16:28,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:16:28,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:16:28,034 INFO L87 Difference]: Start difference. First operand 6120 states and 29417 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:32,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:16:32,610 INFO L93 Difference]: Finished difference Result 9293 states and 40753 transitions. [2021-10-08 17:16:32,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-08 17:16:32,610 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:16:32,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:16:32,649 INFO L225 Difference]: With dead ends: 9293 [2021-10-08 17:16:32,650 INFO L226 Difference]: Without dead ends: 9286 [2021-10-08 17:16:32,650 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 4344.0ms TimeCoverageRelationStatistics Valid=727, Invalid=2465, Unknown=0, NotChecked=0, Total=3192 [2021-10-08 17:16:32,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9286 states. [2021-10-08 17:16:32,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9286 to 6314. [2021-10-08 17:16:32,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6314 states, 6313 states have (on average 4.811024869317282) internal successors, (30372), 6313 states have internal predecessors, (30372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:32,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6314 states to 6314 states and 30372 transitions. [2021-10-08 17:16:32,957 INFO L78 Accepts]: Start accepts. Automaton has 6314 states and 30372 transitions. Word has length 22 [2021-10-08 17:16:32,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:16:32,957 INFO L470 AbstractCegarLoop]: Abstraction has 6314 states and 30372 transitions. [2021-10-08 17:16:32,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:32,958 INFO L276 IsEmpty]: Start isEmpty. Operand 6314 states and 30372 transitions. [2021-10-08 17:16:32,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:16:32,983 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:16:32,983 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:16:33,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-08 17:16:33,196 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 [2021-10-08 17:16:33,196 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:16:33,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:16:33,197 INFO L82 PathProgramCache]: Analyzing trace with hash 627628643, now seen corresponding path program 28 times [2021-10-08 17:16:33,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:16:33,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658948912] [2021-10-08 17:16:33,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:16:33,197 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:16:33,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:16:33,200 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) [2021-10-08 17:16:33,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-08 17:16:34,246 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:16:34,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:16:34,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:16:34,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:16:34,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:34,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:16:35,608 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:35,609 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:16:35,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658948912] [2021-10-08 17:16:35,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658948912] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:16:35,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:16:35,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:16:35,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755773439] [2021-10-08 17:16:35,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:16:35,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:16:35,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:16:35,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:16:35,612 INFO L87 Difference]: Start difference. First operand 6314 states and 30372 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:40,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:16:40,574 INFO L93 Difference]: Finished difference Result 9949 states and 44258 transitions. [2021-10-08 17:16:40,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-08 17:16:40,574 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:16:40,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:16:40,611 INFO L225 Difference]: With dead ends: 9949 [2021-10-08 17:16:40,611 INFO L226 Difference]: Without dead ends: 9942 [2021-10-08 17:16:40,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 4579.1ms TimeCoverageRelationStatistics Valid=741, Invalid=2451, Unknown=0, NotChecked=0, Total=3192 [2021-10-08 17:16:40,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9942 states. [2021-10-08 17:16:40,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9942 to 6420. [2021-10-08 17:16:40,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6420 states, 6419 states have (on average 4.820065430752454) internal successors, (30940), 6419 states have internal predecessors, (30940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:40,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6420 states to 6420 states and 30940 transitions. [2021-10-08 17:16:40,882 INFO L78 Accepts]: Start accepts. Automaton has 6420 states and 30940 transitions. Word has length 22 [2021-10-08 17:16:40,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:16:40,882 INFO L470 AbstractCegarLoop]: Abstraction has 6420 states and 30940 transitions. [2021-10-08 17:16:40,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:40,882 INFO L276 IsEmpty]: Start isEmpty. Operand 6420 states and 30940 transitions. [2021-10-08 17:16:40,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:16:40,898 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:16:40,898 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:16:40,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-08 17:16:41,099 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 [2021-10-08 17:16:41,099 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:16:41,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:16:41,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1528753753, now seen corresponding path program 29 times [2021-10-08 17:16:41,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:16:41,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201008396] [2021-10-08 17:16:41,102 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:16:41,102 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:16:41,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:16:41,104 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) [2021-10-08 17:16:41,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-08 17:16:42,140 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:16:42,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:16:42,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 17:16:42,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:16:42,508 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:42,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:16:43,143 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:43,144 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:16:43,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201008396] [2021-10-08 17:16:43,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201008396] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:16:43,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:16:43,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-08 17:16:43,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075765255] [2021-10-08 17:16:43,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:16:43,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:16:43,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:16:43,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:16:43,146 INFO L87 Difference]: Start difference. First operand 6420 states and 30940 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:45,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:16:45,733 INFO L93 Difference]: Finished difference Result 9394 states and 41538 transitions. [2021-10-08 17:16:45,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 17:16:45,733 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:16:45,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:16:45,773 INFO L225 Difference]: With dead ends: 9394 [2021-10-08 17:16:45,773 INFO L226 Difference]: Without dead ends: 9334 [2021-10-08 17:16:45,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 2203.2ms TimeCoverageRelationStatistics Valid=541, Invalid=1811, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 17:16:45,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9334 states. [2021-10-08 17:16:46,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9334 to 6828. [2021-10-08 17:16:46,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6828 states, 6827 states have (on average 4.805917679800791) internal successors, (32810), 6827 states have internal predecessors, (32810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:46,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6828 states to 6828 states and 32810 transitions. [2021-10-08 17:16:46,048 INFO L78 Accepts]: Start accepts. Automaton has 6828 states and 32810 transitions. Word has length 22 [2021-10-08 17:16:46,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:16:46,049 INFO L470 AbstractCegarLoop]: Abstraction has 6828 states and 32810 transitions. [2021-10-08 17:16:46,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:46,049 INFO L276 IsEmpty]: Start isEmpty. Operand 6828 states and 32810 transitions. [2021-10-08 17:16:46,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:16:46,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:16:46,067 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:16:46,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2021-10-08 17:16:46,267 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 [2021-10-08 17:16:46,268 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:16:46,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:16:46,269 INFO L82 PathProgramCache]: Analyzing trace with hash -272472439, now seen corresponding path program 30 times [2021-10-08 17:16:46,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:16:46,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561928674] [2021-10-08 17:16:46,270 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:16:46,270 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:16:46,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:16:46,271 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) [2021-10-08 17:16:46,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-08 17:16:47,422 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:16:47,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:16:47,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:16:47,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:16:47,879 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:47,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:16:48,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:48,650 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:16:48,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561928674] [2021-10-08 17:16:48,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561928674] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:16:48,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:16:48,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:16:48,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855663824] [2021-10-08 17:16:48,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:16:48,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:16:48,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:16:48,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:16:48,652 INFO L87 Difference]: Start difference. First operand 6828 states and 32810 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:52,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:16:52,996 INFO L93 Difference]: Finished difference Result 10325 states and 46411 transitions. [2021-10-08 17:16:52,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-08 17:16:52,997 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:16:52,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:16:53,033 INFO L225 Difference]: With dead ends: 10325 [2021-10-08 17:16:53,034 INFO L226 Difference]: Without dead ends: 10318 [2021-10-08 17:16:53,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 4075.4ms TimeCoverageRelationStatistics Valid=812, Invalid=2728, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 17:16:53,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10318 states. [2021-10-08 17:16:53,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10318 to 7034. [2021-10-08 17:16:53,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7034 states, 7033 states have (on average 4.812313379781032) internal successors, (33845), 7033 states have internal predecessors, (33845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:53,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7034 states to 7034 states and 33845 transitions. [2021-10-08 17:16:53,361 INFO L78 Accepts]: Start accepts. Automaton has 7034 states and 33845 transitions. Word has length 22 [2021-10-08 17:16:53,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:16:53,362 INFO L470 AbstractCegarLoop]: Abstraction has 7034 states and 33845 transitions. [2021-10-08 17:16:53,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:53,362 INFO L276 IsEmpty]: Start isEmpty. Operand 7034 states and 33845 transitions. [2021-10-08 17:16:53,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:16:53,390 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:16:53,390 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:16:53,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2021-10-08 17:16:53,606 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 [2021-10-08 17:16:53,607 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:16:53,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:16:53,608 INFO L82 PathProgramCache]: Analyzing trace with hash 718956289, now seen corresponding path program 31 times [2021-10-08 17:16:53,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:16:53,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987864239] [2021-10-08 17:16:53,608 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:16:53,608 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:16:53,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:16:53,609 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) [2021-10-08 17:16:53,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-08 17:16:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:16:54,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:16:54,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:16:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:55,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:16:56,041 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:56,042 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:16:56,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987864239] [2021-10-08 17:16:56,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987864239] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:16:56,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:16:56,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:16:56,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300528904] [2021-10-08 17:16:56,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:16:56,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:16:56,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:16:56,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:16:56,044 INFO L87 Difference]: Start difference. First operand 7034 states and 33845 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:00,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:17:00,126 INFO L93 Difference]: Finished difference Result 10822 states and 48349 transitions. [2021-10-08 17:17:00,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-08 17:17:00,126 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:17:00,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:17:00,171 INFO L225 Difference]: With dead ends: 10822 [2021-10-08 17:17:00,171 INFO L226 Difference]: Without dead ends: 10808 [2021-10-08 17:17:00,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 3830.9ms TimeCoverageRelationStatistics Valid=728, Invalid=2242, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 17:17:00,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10808 states. [2021-10-08 17:17:00,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10808 to 7126. [2021-10-08 17:17:00,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7126 states, 7125 states have (on average 4.825964912280702) internal successors, (34385), 7125 states have internal predecessors, (34385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:00,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7126 states to 7126 states and 34385 transitions. [2021-10-08 17:17:00,478 INFO L78 Accepts]: Start accepts. Automaton has 7126 states and 34385 transitions. Word has length 22 [2021-10-08 17:17:00,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:17:00,478 INFO L470 AbstractCegarLoop]: Abstraction has 7126 states and 34385 transitions. [2021-10-08 17:17:00,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:00,478 INFO L276 IsEmpty]: Start isEmpty. Operand 7126 states and 34385 transitions. [2021-10-08 17:17:00,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:17:00,503 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:17:00,504 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:17:00,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-10-08 17:17:00,717 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 [2021-10-08 17:17:00,718 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:17:00,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:17:00,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1317197265, now seen corresponding path program 32 times [2021-10-08 17:17:00,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:17:00,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129727437] [2021-10-08 17:17:00,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:17:00,720 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:17:00,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:17:00,722 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) [2021-10-08 17:17:00,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-08 17:17:01,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:17:01,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:17:01,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 17:17:01,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:17:02,360 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:02,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:17:03,163 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:03,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:17:03,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129727437] [2021-10-08 17:17:03,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129727437] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:17:03,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:17:03,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-08 17:17:03,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102256202] [2021-10-08 17:17:03,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:17:03,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:17:03,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:17:03,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:17:03,165 INFO L87 Difference]: Start difference. First operand 7126 states and 34385 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:07,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:17:07,849 INFO L93 Difference]: Finished difference Result 11387 states and 50944 transitions. [2021-10-08 17:17:07,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 17:17:07,850 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:17:07,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:17:07,904 INFO L225 Difference]: With dead ends: 11387 [2021-10-08 17:17:07,904 INFO L226 Difference]: Without dead ends: 11373 [2021-10-08 17:17:07,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 3209.1ms TimeCoverageRelationStatistics Valid=532, Invalid=1820, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 17:17:07,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11373 states. [2021-10-08 17:17:08,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11373 to 7354. [2021-10-08 17:17:08,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7354 states, 7353 states have (on average 4.834897320821433) internal successors, (35551), 7353 states have internal predecessors, (35551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:08,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7354 states to 7354 states and 35551 transitions. [2021-10-08 17:17:08,311 INFO L78 Accepts]: Start accepts. Automaton has 7354 states and 35551 transitions. Word has length 22 [2021-10-08 17:17:08,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:17:08,312 INFO L470 AbstractCegarLoop]: Abstraction has 7354 states and 35551 transitions. [2021-10-08 17:17:08,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:08,312 INFO L276 IsEmpty]: Start isEmpty. Operand 7354 states and 35551 transitions. [2021-10-08 17:17:08,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:17:08,339 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:17:08,339 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:17:08,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-08 17:17:08,553 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 [2021-10-08 17:17:08,554 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:17:08,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:17:08,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1398131311, now seen corresponding path program 33 times [2021-10-08 17:17:08,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:17:08,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310035795] [2021-10-08 17:17:08,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:17:08,556 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:17:08,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:17:08,557 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) [2021-10-08 17:17:08,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-08 17:17:09,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:17:09,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:17:09,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:17:09,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:17:10,193 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:10,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:17:11,098 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:11,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:17:11,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310035795] [2021-10-08 17:17:11,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310035795] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:17:11,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:17:11,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:17:11,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828851623] [2021-10-08 17:17:11,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:17:11,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:17:11,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:17:11,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:17:11,101 INFO L87 Difference]: Start difference. First operand 7354 states and 35551 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:15,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:17:15,676 INFO L93 Difference]: Finished difference Result 10994 states and 49125 transitions. [2021-10-08 17:17:15,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-08 17:17:15,677 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:17:15,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:17:15,716 INFO L225 Difference]: With dead ends: 10994 [2021-10-08 17:17:15,717 INFO L226 Difference]: Without dead ends: 10942 [2021-10-08 17:17:15,718 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 4026.0ms TimeCoverageRelationStatistics Valid=604, Invalid=2152, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 17:17:15,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10942 states. [2021-10-08 17:17:15,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10942 to 7766. [2021-10-08 17:17:15,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7766 states, 7765 states have (on average 4.829877656149388) internal successors, (37504), 7765 states have internal predecessors, (37504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:16,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7766 states to 7766 states and 37504 transitions. [2021-10-08 17:17:16,016 INFO L78 Accepts]: Start accepts. Automaton has 7766 states and 37504 transitions. Word has length 22 [2021-10-08 17:17:16,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:17:16,016 INFO L470 AbstractCegarLoop]: Abstraction has 7766 states and 37504 transitions. [2021-10-08 17:17:16,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:16,016 INFO L276 IsEmpty]: Start isEmpty. Operand 7766 states and 37504 transitions. [2021-10-08 17:17:16,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:17:16,036 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:17:16,036 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:17:16,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-10-08 17:17:16,237 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 [2021-10-08 17:17:16,237 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:17:16,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:17:16,238 INFO L82 PathProgramCache]: Analyzing trace with hash 946061385, now seen corresponding path program 34 times [2021-10-08 17:17:16,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:17:16,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667705788] [2021-10-08 17:17:16,239 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:17:16,239 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:17:16,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:17:16,241 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) [2021-10-08 17:17:16,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-08 17:17:17,445 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:17:17,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:17:17,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:17:17,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:17:17,981 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:17,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:17:18,888 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:18,888 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:17:18,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667705788] [2021-10-08 17:17:18,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667705788] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:17:18,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:17:18,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:17:18,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372490457] [2021-10-08 17:17:18,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:17:18,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:17:18,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:17:18,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:17:18,890 INFO L87 Difference]: Start difference. First operand 7766 states and 37504 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:22,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:17:22,793 INFO L93 Difference]: Finished difference Result 11657 states and 52788 transitions. [2021-10-08 17:17:22,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 17:17:22,794 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:17:22,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:17:22,850 INFO L225 Difference]: With dead ends: 11657 [2021-10-08 17:17:22,850 INFO L226 Difference]: Without dead ends: 11650 [2021-10-08 17:17:22,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 3518.9ms TimeCoverageRelationStatistics Valid=600, Invalid=1850, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 17:17:22,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11650 states. [2021-10-08 17:17:23,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11650 to 7858. [2021-10-08 17:17:23,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7858 states, 7857 states have (on average 4.83670612192949) internal successors, (38002), 7857 states have internal predecessors, (38002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:23,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7858 states to 7858 states and 38002 transitions. [2021-10-08 17:17:23,216 INFO L78 Accepts]: Start accepts. Automaton has 7858 states and 38002 transitions. Word has length 22 [2021-10-08 17:17:23,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:17:23,217 INFO L470 AbstractCegarLoop]: Abstraction has 7858 states and 38002 transitions. [2021-10-08 17:17:23,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:23,217 INFO L276 IsEmpty]: Start isEmpty. Operand 7858 states and 38002 transitions. [2021-10-08 17:17:23,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:17:23,236 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:17:23,236 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:17:23,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-08 17:17:23,436 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 [2021-10-08 17:17:23,437 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:17:23,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:17:23,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1937490113, now seen corresponding path program 35 times [2021-10-08 17:17:23,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:17:23,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876433820] [2021-10-08 17:17:23,439 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:17:23,439 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:17:23,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:17:23,441 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) [2021-10-08 17:17:23,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-08 17:17:24,560 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:17:24,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:17:24,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 17:17:24,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:17:25,108 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:25,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:17:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:25,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:17:25,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876433820] [2021-10-08 17:17:25,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876433820] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:17:25,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:17:25,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-08 17:17:25,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290448751] [2021-10-08 17:17:25,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:17:25,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:17:25,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:17:25,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:17:25,920 INFO L87 Difference]: Start difference. First operand 7858 states and 38002 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:30,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:17:30,977 INFO L93 Difference]: Finished difference Result 12848 states and 56841 transitions. [2021-10-08 17:17:30,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-08 17:17:30,978 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:17:30,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:17:31,041 INFO L225 Difference]: With dead ends: 12848 [2021-10-08 17:17:31,041 INFO L226 Difference]: Without dead ends: 12834 [2021-10-08 17:17:31,043 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 4450.3ms TimeCoverageRelationStatistics Valid=718, Invalid=2362, Unknown=0, NotChecked=0, Total=3080 [2021-10-08 17:17:31,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12834 states. [2021-10-08 17:17:31,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12834 to 8120. [2021-10-08 17:17:31,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8120 states, 8119 states have (on average 4.845301145461264) internal successors, (39339), 8119 states have internal predecessors, (39339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:31,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8120 states to 8120 states and 39339 transitions. [2021-10-08 17:17:31,386 INFO L78 Accepts]: Start accepts. Automaton has 8120 states and 39339 transitions. Word has length 22 [2021-10-08 17:17:31,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:17:31,387 INFO L470 AbstractCegarLoop]: Abstraction has 8120 states and 39339 transitions. [2021-10-08 17:17:31,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:31,387 INFO L276 IsEmpty]: Start isEmpty. Operand 8120 states and 39339 transitions. [2021-10-08 17:17:31,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:17:31,413 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:17:31,413 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:17:31,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-08 17:17:31,613 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 [2021-10-08 17:17:31,613 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:17:31,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:17:31,614 INFO L82 PathProgramCache]: Analyzing trace with hash 678399207, now seen corresponding path program 36 times [2021-10-08 17:17:31,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:17:31,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17208237] [2021-10-08 17:17:31,615 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:17:31,615 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:17:31,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:17:31,616 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) [2021-10-08 17:17:31,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-08 17:17:32,954 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 17:17:32,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:17:32,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:17:32,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:17:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:33,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:17:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:34,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:17:34,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17208237] [2021-10-08 17:17:34,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17208237] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:17:34,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:17:34,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:17:34,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159697976] [2021-10-08 17:17:34,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:17:34,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:17:34,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:17:34,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:17:34,532 INFO L87 Difference]: Start difference. First operand 8120 states and 39339 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:38,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:17:38,158 INFO L93 Difference]: Finished difference Result 11429 states and 51784 transitions. [2021-10-08 17:17:38,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 17:17:38,158 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:17:38,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:17:38,200 INFO L225 Difference]: With dead ends: 11429 [2021-10-08 17:17:38,201 INFO L226 Difference]: Without dead ends: 11422 [2021-10-08 17:17:38,201 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 3340.3ms TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 17:17:38,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11422 states. [2021-10-08 17:17:38,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11422 to 8256. [2021-10-08 17:17:38,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8256 states, 8255 states have (on average 4.854270139309509) internal successors, (40072), 8255 states have internal predecessors, (40072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:38,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8256 states to 8256 states and 40072 transitions. [2021-10-08 17:17:38,636 INFO L78 Accepts]: Start accepts. Automaton has 8256 states and 40072 transitions. Word has length 22 [2021-10-08 17:17:38,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:17:38,636 INFO L470 AbstractCegarLoop]: Abstraction has 8256 states and 40072 transitions. [2021-10-08 17:17:38,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:38,636 INFO L276 IsEmpty]: Start isEmpty. Operand 8256 states and 40072 transitions. [2021-10-08 17:17:38,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:17:38,661 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:17:38,661 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:17:38,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-08 17:17:38,862 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 [2021-10-08 17:17:38,862 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:17:38,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:17:38,865 INFO L82 PathProgramCache]: Analyzing trace with hash -259053657, now seen corresponding path program 37 times [2021-10-08 17:17:38,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:17:38,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718580310] [2021-10-08 17:17:38,866 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:17:38,866 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:17:38,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:17:38,869 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) [2021-10-08 17:17:38,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-08 17:17:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:17:40,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:17:40,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:17:40,653 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:40,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:17:41,458 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:41,458 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:17:41,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718580310] [2021-10-08 17:17:41,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718580310] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:17:41,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:17:41,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:17:41,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962047884] [2021-10-08 17:17:41,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:17:41,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:17:41,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:17:41,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:17:41,461 INFO L87 Difference]: Start difference. First operand 8256 states and 40072 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:46,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:17:46,704 INFO L93 Difference]: Finished difference Result 12432 states and 55923 transitions. [2021-10-08 17:17:46,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-08 17:17:46,704 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:17:46,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:17:46,753 INFO L225 Difference]: With dead ends: 12432 [2021-10-08 17:17:46,753 INFO L226 Difference]: Without dead ends: 12418 [2021-10-08 17:17:46,754 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 4922.3ms TimeCoverageRelationStatistics Valid=756, Invalid=2550, Unknown=0, NotChecked=0, Total=3306 [2021-10-08 17:17:46,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12418 states. [2021-10-08 17:17:47,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12418 to 8344. [2021-10-08 17:17:47,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8344 states, 8343 states have (on average 4.8646769747093375) internal successors, (40586), 8343 states have internal predecessors, (40586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:47,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8344 states to 8344 states and 40586 transitions. [2021-10-08 17:17:47,109 INFO L78 Accepts]: Start accepts. Automaton has 8344 states and 40586 transitions. Word has length 22 [2021-10-08 17:17:47,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:17:47,109 INFO L470 AbstractCegarLoop]: Abstraction has 8344 states and 40586 transitions. [2021-10-08 17:17:47,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:47,109 INFO L276 IsEmpty]: Start isEmpty. Operand 8344 states and 40586 transitions. [2021-10-08 17:17:47,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:17:47,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:17:47,132 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:17:47,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-08 17:17:47,334 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 [2021-10-08 17:17:47,334 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:17:47,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:17:47,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1064432909, now seen corresponding path program 38 times [2021-10-08 17:17:47,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:17:47,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466884107] [2021-10-08 17:17:47,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:17:47,343 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:17:47,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:17:47,345 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) [2021-10-08 17:17:47,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-08 17:17:48,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:17:48,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:17:48,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:17:48,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:17:49,193 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:49,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:17:50,108 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:17:50,108 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:17:50,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466884107] [2021-10-08 17:17:50,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466884107] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:17:50,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:17:50,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 13 [2021-10-08 17:17:50,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986919028] [2021-10-08 17:17:50,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 17:17:50,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:17:50,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 17:17:50,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:17:50,110 INFO L87 Difference]: Start difference. First operand 8344 states and 40586 transitions. Second operand has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:51,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:17:51,402 INFO L93 Difference]: Finished difference Result 11187 states and 51776 transitions. [2021-10-08 17:17:51,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 17:17:51,403 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:17:51,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:17:51,452 INFO L225 Difference]: With dead ends: 11187 [2021-10-08 17:17:51,452 INFO L226 Difference]: Without dead ends: 11180 [2021-10-08 17:17:51,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1132.4ms TimeCoverageRelationStatistics Valid=237, Invalid=693, Unknown=0, NotChecked=0, Total=930 [2021-10-08 17:17:51,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11180 states. [2021-10-08 17:17:51,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11180 to 8498. [2021-10-08 17:17:51,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8498 states, 8497 states have (on average 4.858420619042015) internal successors, (41282), 8497 states have internal predecessors, (41282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8498 states to 8498 states and 41282 transitions. [2021-10-08 17:17:51,729 INFO L78 Accepts]: Start accepts. Automaton has 8498 states and 41282 transitions. Word has length 22 [2021-10-08 17:17:51,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:17:51,729 INFO L470 AbstractCegarLoop]: Abstraction has 8498 states and 41282 transitions. [2021-10-08 17:17:51,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:51,730 INFO L276 IsEmpty]: Start isEmpty. Operand 8498 states and 41282 transitions. [2021-10-08 17:17:51,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:17:51,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:17:51,753 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:17:51,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-08 17:17:51,953 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 [2021-10-08 17:17:51,953 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:17:51,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:17:51,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1616967653, now seen corresponding path program 39 times [2021-10-08 17:17:51,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:17:51,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617951516] [2021-10-08 17:17:51,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:17:51,959 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:17:51,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:17:51,962 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) [2021-10-08 17:17:51,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-08 17:17:53,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:17:53,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:17:53,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:17:53,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:17:54,009 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:54,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:17:54,694 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:17:54,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:17:54,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617951516] [2021-10-08 17:17:54,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617951516] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:17:54,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:17:54,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-08 17:17:54,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943131559] [2021-10-08 17:17:54,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:17:54,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:17:54,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:17:54,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:17:54,696 INFO L87 Difference]: Start difference. First operand 8498 states and 41282 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:57,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:17:57,677 INFO L93 Difference]: Finished difference Result 12390 states and 56335 transitions. [2021-10-08 17:17:57,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 17:17:57,677 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:17:57,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:17:57,729 INFO L225 Difference]: With dead ends: 12390 [2021-10-08 17:17:57,729 INFO L226 Difference]: Without dead ends: 12376 [2021-10-08 17:17:57,729 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 2734.3ms TimeCoverageRelationStatistics Valid=502, Invalid=1390, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 17:17:57,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12376 states. [2021-10-08 17:17:58,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12376 to 8732. [2021-10-08 17:17:58,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8732 states, 8731 states have (on average 4.857175581262169) internal successors, (42408), 8731 states have internal predecessors, (42408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:58,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8732 states to 8732 states and 42408 transitions. [2021-10-08 17:17:58,122 INFO L78 Accepts]: Start accepts. Automaton has 8732 states and 42408 transitions. Word has length 22 [2021-10-08 17:17:58,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:17:58,122 INFO L470 AbstractCegarLoop]: Abstraction has 8732 states and 42408 transitions. [2021-10-08 17:17:58,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:58,122 INFO L276 IsEmpty]: Start isEmpty. Operand 8732 states and 42408 transitions. [2021-10-08 17:17:58,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:17:58,146 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:17:58,146 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:17:58,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-08 17:17:58,347 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 [2021-10-08 17:17:58,347 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:17:58,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:17:58,349 INFO L82 PathProgramCache]: Analyzing trace with hash -78278169, now seen corresponding path program 40 times [2021-10-08 17:17:58,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:17:58,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985550832] [2021-10-08 17:17:58,350 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:17:58,350 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:17:58,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:17:58,351 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) [2021-10-08 17:17:58,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-08 17:17:59,625 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:17:59,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:17:59,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:17:59,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:18:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:00,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:18:00,833 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:18:00,833 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:18:00,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985550832] [2021-10-08 17:18:00,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985550832] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:18:00,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:18:00,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-08 17:18:00,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132552092] [2021-10-08 17:18:00,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:18:00,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:18:00,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:18:00,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:18:00,835 INFO L87 Difference]: Start difference. First operand 8732 states and 42408 transitions. Second operand has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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) [2021-10-08 17:18:03,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:18:03,582 INFO L93 Difference]: Finished difference Result 12392 states and 56277 transitions. [2021-10-08 17:18:03,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 17:18:03,583 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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) Word has length 22 [2021-10-08 17:18:03,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:18:03,636 INFO L225 Difference]: With dead ends: 12392 [2021-10-08 17:18:03,636 INFO L226 Difference]: Without dead ends: 12378 [2021-10-08 17:18:03,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 2550.6ms TimeCoverageRelationStatistics Valid=500, Invalid=1306, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 17:18:03,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12378 states. [2021-10-08 17:18:03,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12378 to 8926. [2021-10-08 17:18:03,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8926 states, 8925 states have (on average 4.859271708683473) internal successors, (43369), 8925 states have internal predecessors, (43369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:18:04,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8926 states to 8926 states and 43369 transitions. [2021-10-08 17:18:04,004 INFO L78 Accepts]: Start accepts. Automaton has 8926 states and 43369 transitions. Word has length 22 [2021-10-08 17:18:04,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:18:04,005 INFO L470 AbstractCegarLoop]: Abstraction has 8926 states and 43369 transitions. [2021-10-08 17:18:04,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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) [2021-10-08 17:18:04,005 INFO L276 IsEmpty]: Start isEmpty. Operand 8926 states and 43369 transitions. [2021-10-08 17:18:04,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:18:04,042 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:18:04,042 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:18:04,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-08 17:18:04,257 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 [2021-10-08 17:18:04,257 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:18:04,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:18:04,258 INFO L82 PathProgramCache]: Analyzing trace with hash 189252487, now seen corresponding path program 41 times [2021-10-08 17:18:04,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:18:04,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201210851] [2021-10-08 17:18:04,259 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:18:04,259 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:18:04,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:18:04,260 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) [2021-10-08 17:18:04,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-08 17:18:05,685 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:18:05,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:18:05,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 17:18:05,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:18:06,108 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:06,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:18:06,901 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:06,901 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:18:06,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201210851] [2021-10-08 17:18:06,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201210851] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:18:06,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:18:06,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-08 17:18:06,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345353944] [2021-10-08 17:18:06,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:18:06,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:18:06,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:18:06,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:18:06,903 INFO L87 Difference]: Start difference. First operand 8926 states and 43369 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:18:10,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:18:10,816 INFO L93 Difference]: Finished difference Result 12715 states and 57329 transitions. [2021-10-08 17:18:10,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-08 17:18:10,817 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:18:10,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:18:10,869 INFO L225 Difference]: With dead ends: 12715 [2021-10-08 17:18:10,869 INFO L226 Difference]: Without dead ends: 12708 [2021-10-08 17:18:10,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 3629.4ms TimeCoverageRelationStatistics Valid=630, Invalid=2232, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 17:18:10,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12708 states. [2021-10-08 17:18:11,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12708 to 9110. [2021-10-08 17:18:11,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9110 states, 9109 states have (on average 4.869250192117685) internal successors, (44354), 9109 states have internal predecessors, (44354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:18:11,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9110 states to 9110 states and 44354 transitions. [2021-10-08 17:18:11,213 INFO L78 Accepts]: Start accepts. Automaton has 9110 states and 44354 transitions. Word has length 22 [2021-10-08 17:18:11,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:18:11,213 INFO L470 AbstractCegarLoop]: Abstraction has 9110 states and 44354 transitions. [2021-10-08 17:18:11,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:18:11,213 INFO L276 IsEmpty]: Start isEmpty. Operand 9110 states and 44354 transitions. [2021-10-08 17:18:11,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:18:11,237 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:18:11,237 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:18:11,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-08 17:18:11,447 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 [2021-10-08 17:18:11,448 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:18:11,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:18:11,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1016007463, now seen corresponding path program 42 times [2021-10-08 17:18:11,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:18:11,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60315810] [2021-10-08 17:18:11,449 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:18:11,449 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:18:11,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:18:11,451 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) [2021-10-08 17:18:11,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-08 17:18:13,072 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 17:18:13,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:18:13,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:18:13,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:18:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:13,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:18:14,468 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:14,469 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:18:14,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60315810] [2021-10-08 17:18:14,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [60315810] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:18:14,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:18:14,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:18:14,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127222356] [2021-10-08 17:18:14,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:18:14,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:18:14,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:18:14,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:18:14,471 INFO L87 Difference]: Start difference. First operand 9110 states and 44354 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:18:19,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:18:19,151 INFO L93 Difference]: Finished difference Result 12796 states and 57984 transitions. [2021-10-08 17:18:19,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 17:18:19,152 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:18:19,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:18:19,293 INFO L225 Difference]: With dead ends: 12796 [2021-10-08 17:18:19,294 INFO L226 Difference]: Without dead ends: 12789 [2021-10-08 17:18:19,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 4274.9ms TimeCoverageRelationStatistics Valid=645, Invalid=2007, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 17:18:19,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12789 states. [2021-10-08 17:18:19,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12789 to 9244. [2021-10-08 17:18:19,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9244 states, 9243 states have (on average 4.880125500378665) internal successors, (45107), 9243 states have internal predecessors, (45107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:18:19,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9244 states to 9244 states and 45107 transitions. [2021-10-08 17:18:19,606 INFO L78 Accepts]: Start accepts. Automaton has 9244 states and 45107 transitions. Word has length 22 [2021-10-08 17:18:19,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:18:19,606 INFO L470 AbstractCegarLoop]: Abstraction has 9244 states and 45107 transitions. [2021-10-08 17:18:19,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:18:19,606 INFO L276 IsEmpty]: Start isEmpty. Operand 9244 states and 45107 transitions. [2021-10-08 17:18:19,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:18:19,631 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:18:19,631 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:18:19,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-08 17:18:19,831 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 [2021-10-08 17:18:19,832 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:18:19,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:18:19,833 INFO L82 PathProgramCache]: Analyzing trace with hash 786000381, now seen corresponding path program 43 times [2021-10-08 17:18:19,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:18:19,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968264664] [2021-10-08 17:18:19,833 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:18:19,834 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:18:19,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:18:19,835 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) [2021-10-08 17:18:19,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-08 17:18:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:18:21,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:18:21,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:18:21,751 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:21,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:18:22,660 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:22,660 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:18:22,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968264664] [2021-10-08 17:18:22,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968264664] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:18:22,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:18:22,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:18:22,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238710160] [2021-10-08 17:18:22,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:18:22,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:18:22,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:18:22,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:18:22,663 INFO L87 Difference]: Start difference. First operand 9244 states and 45107 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:18:25,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:18:25,922 INFO L93 Difference]: Finished difference Result 12983 states and 59811 transitions. [2021-10-08 17:18:25,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 17:18:25,923 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:18:25,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:18:25,983 INFO L225 Difference]: With dead ends: 12983 [2021-10-08 17:18:25,983 INFO L226 Difference]: Without dead ends: 12976 [2021-10-08 17:18:25,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 2909.3ms TimeCoverageRelationStatistics Valid=490, Invalid=1580, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 17:18:25,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12976 states. [2021-10-08 17:18:26,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12976 to 9370. [2021-10-08 17:18:26,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9370 states, 9369 states have (on average 4.884512754829758) internal successors, (45763), 9369 states have internal predecessors, (45763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:18:26,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9370 states to 9370 states and 45763 transitions. [2021-10-08 17:18:26,327 INFO L78 Accepts]: Start accepts. Automaton has 9370 states and 45763 transitions. Word has length 22 [2021-10-08 17:18:26,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:18:26,327 INFO L470 AbstractCegarLoop]: Abstraction has 9370 states and 45763 transitions. [2021-10-08 17:18:26,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:18:26,328 INFO L276 IsEmpty]: Start isEmpty. Operand 9370 states and 45763 transitions. [2021-10-08 17:18:26,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:18:26,353 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:18:26,353 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:18:26,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-08 17:18:26,558 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 [2021-10-08 17:18:26,559 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:18:26,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:18:26,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1777429109, now seen corresponding path program 44 times [2021-10-08 17:18:26,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:18:26,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613534908] [2021-10-08 17:18:26,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:18:26,561 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:18:26,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:18:26,563 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) [2021-10-08 17:18:26,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-08 17:18:28,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:18:28,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:18:28,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:18:28,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:18:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:28,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:18:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:29,828 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:18:29,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613534908] [2021-10-08 17:18:29,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613534908] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:18:29,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:18:29,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 17:18:29,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100555184] [2021-10-08 17:18:29,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 17:18:29,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:18:29,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 17:18:29,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:18:29,838 INFO L87 Difference]: Start difference. First operand 9370 states and 45763 transitions. Second operand has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:18:35,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:18:35,668 INFO L93 Difference]: Finished difference Result 14459 states and 66016 transitions. [2021-10-08 17:18:35,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-08 17:18:35,669 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:18:35,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:18:35,726 INFO L225 Difference]: With dead ends: 14459 [2021-10-08 17:18:35,727 INFO L226 Difference]: Without dead ends: 14452 [2021-10-08 17:18:35,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 5217.0ms TimeCoverageRelationStatistics Valid=828, Invalid=3332, Unknown=0, NotChecked=0, Total=4160 [2021-10-08 17:18:35,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14452 states. [2021-10-08 17:18:36,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14452 to 9734. [2021-10-08 17:18:36,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9734 states, 9733 states have (on average 4.903318606801602) internal successors, (47724), 9733 states have internal predecessors, (47724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:18:36,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9734 states to 9734 states and 47724 transitions. [2021-10-08 17:18:36,079 INFO L78 Accepts]: Start accepts. Automaton has 9734 states and 47724 transitions. Word has length 22 [2021-10-08 17:18:36,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:18:36,080 INFO L470 AbstractCegarLoop]: Abstraction has 9734 states and 47724 transitions. [2021-10-08 17:18:36,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:18:36,080 INFO L276 IsEmpty]: Start isEmpty. Operand 9734 states and 47724 transitions. [2021-10-08 17:18:36,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:18:36,107 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:18:36,107 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:18:36,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-08 17:18:36,307 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 [2021-10-08 17:18:36,308 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:18:36,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:18:36,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1170444981, now seen corresponding path program 45 times [2021-10-08 17:18:36,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:18:36,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116102584] [2021-10-08 17:18:36,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:18:36,310 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:18:36,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:18:36,311 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) [2021-10-08 17:18:36,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-08 17:18:37,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:18:37,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:18:37,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:18:37,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:18:38,580 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:38,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:18:39,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:39,499 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:18:39,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116102584] [2021-10-08 17:18:39,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116102584] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:18:39,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:18:39,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:18:39,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234893548] [2021-10-08 17:18:39,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:18:39,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:18:39,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:18:39,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:18:39,501 INFO L87 Difference]: Start difference. First operand 9734 states and 47724 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:18:44,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:18:44,684 INFO L93 Difference]: Finished difference Result 13623 states and 62424 transitions. [2021-10-08 17:18:44,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-08 17:18:44,685 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:18:44,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:18:44,737 INFO L225 Difference]: With dead ends: 13623 [2021-10-08 17:18:44,737 INFO L226 Difference]: Without dead ends: 13616 [2021-10-08 17:18:44,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 4647.3ms TimeCoverageRelationStatistics Valid=760, Invalid=2432, Unknown=0, NotChecked=0, Total=3192 [2021-10-08 17:18:44,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13616 states. [2021-10-08 17:18:45,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13616 to 9894. [2021-10-08 17:18:45,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9894 states, 9893 states have (on average 4.914687152532093) internal successors, (48621), 9893 states have internal predecessors, (48621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:18:45,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9894 states to 9894 states and 48621 transitions. [2021-10-08 17:18:45,097 INFO L78 Accepts]: Start accepts. Automaton has 9894 states and 48621 transitions. Word has length 22 [2021-10-08 17:18:45,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:18:45,097 INFO L470 AbstractCegarLoop]: Abstraction has 9894 states and 48621 transitions. [2021-10-08 17:18:45,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:18:45,097 INFO L276 IsEmpty]: Start isEmpty. Operand 9894 states and 48621 transitions. [2021-10-08 17:18:45,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:18:45,124 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:18:45,124 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:18:45,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-08 17:18:45,324 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 [2021-10-08 17:18:45,325 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:18:45,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:18:45,326 INFO L82 PathProgramCache]: Analyzing trace with hash -419114661, now seen corresponding path program 46 times [2021-10-08 17:18:45,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:18:45,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375381727] [2021-10-08 17:18:45,327 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:18:45,327 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:18:45,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:18:45,328 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) [2021-10-08 17:18:45,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-08 17:18:46,866 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:18:46,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:18:46,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:18:46,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:18:47,435 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:47,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:18:48,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:48,456 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:18:48,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375381727] [2021-10-08 17:18:48,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375381727] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:18:48,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:18:48,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:18:48,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595270946] [2021-10-08 17:18:48,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:18:48,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:18:48,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:18:48,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:18:48,458 INFO L87 Difference]: Start difference. First operand 9894 states and 48621 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:18:54,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:18:54,142 INFO L93 Difference]: Finished difference Result 14370 states and 65725 transitions. [2021-10-08 17:18:54,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-08 17:18:54,143 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:18:54,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:18:54,212 INFO L225 Difference]: With dead ends: 14370 [2021-10-08 17:18:54,213 INFO L226 Difference]: Without dead ends: 14356 [2021-10-08 17:18:54,213 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 5171.1ms TimeCoverageRelationStatistics Valid=835, Invalid=2587, Unknown=0, NotChecked=0, Total=3422 [2021-10-08 17:18:54,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14356 states. [2021-10-08 17:18:54,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14356 to 9992. [2021-10-08 17:18:54,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9992 states, 9991 states have (on average 4.924632168952057) internal successors, (49202), 9991 states have internal predecessors, (49202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:18:54,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9992 states to 9992 states and 49202 transitions. [2021-10-08 17:18:54,641 INFO L78 Accepts]: Start accepts. Automaton has 9992 states and 49202 transitions. Word has length 22 [2021-10-08 17:18:54,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:18:54,642 INFO L470 AbstractCegarLoop]: Abstraction has 9992 states and 49202 transitions. [2021-10-08 17:18:54,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:18:54,642 INFO L276 IsEmpty]: Start isEmpty. Operand 9992 states and 49202 transitions. [2021-10-08 17:18:54,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:18:54,670 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:18:54,670 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:18:54,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-08 17:18:54,870 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 [2021-10-08 17:18:54,871 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:18:54,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:18:54,871 INFO L82 PathProgramCache]: Analyzing trace with hash 184275789, now seen corresponding path program 47 times [2021-10-08 17:18:54,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:18:54,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089387299] [2021-10-08 17:18:54,871 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:18:54,872 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:18:54,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:18:54,872 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) [2021-10-08 17:18:54,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-08 17:18:56,334 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:18:56,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:18:56,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 17:18:56,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:18:56,891 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:56,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:18:57,600 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:57,600 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:18:57,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089387299] [2021-10-08 17:18:57,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089387299] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:18:57,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:18:57,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-08 17:18:57,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011133676] [2021-10-08 17:18:57,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:18:57,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:18:57,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:18:57,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:18:57,602 INFO L87 Difference]: Start difference. First operand 9992 states and 49202 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:01,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:19:01,243 INFO L93 Difference]: Finished difference Result 14897 states and 68010 transitions. [2021-10-08 17:19:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 17:19:01,244 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:19:01,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:19:01,300 INFO L225 Difference]: With dead ends: 14897 [2021-10-08 17:19:01,300 INFO L226 Difference]: Without dead ends: 14876 [2021-10-08 17:19:01,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 3104.5ms TimeCoverageRelationStatistics Valid=605, Invalid=1747, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 17:19:01,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14876 states. [2021-10-08 17:19:01,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14876 to 10460. [2021-10-08 17:19:01,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10460 states, 10459 states have (on average 4.92016445166842) internal successors, (51460), 10459 states have internal predecessors, (51460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:01,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10460 states to 10460 states and 51460 transitions. [2021-10-08 17:19:01,681 INFO L78 Accepts]: Start accepts. Automaton has 10460 states and 51460 transitions. Word has length 22 [2021-10-08 17:19:01,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:19:01,681 INFO L470 AbstractCegarLoop]: Abstraction has 10460 states and 51460 transitions. [2021-10-08 17:19:01,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:01,681 INFO L276 IsEmpty]: Start isEmpty. Operand 10460 states and 51460 transitions. [2021-10-08 17:19:01,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:19:01,708 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:19:01,709 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:19:01,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-08 17:19:01,909 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 [2021-10-08 17:19:01,910 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:19:01,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:19:01,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1797842523, now seen corresponding path program 48 times [2021-10-08 17:19:01,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:19:01,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065307439] [2021-10-08 17:19:01,911 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:19:01,911 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:19:01,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:19:01,913 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) [2021-10-08 17:19:01,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-08 17:19:03,686 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:19:03,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:19:03,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 17:19:03,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:19:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:04,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:19:04,787 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:04,788 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:19:04,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065307439] [2021-10-08 17:19:04,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065307439] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:19:04,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:19:04,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-08 17:19:04,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59142578] [2021-10-08 17:19:04,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:19:04,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:19:04,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:19:04,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:19:04,790 INFO L87 Difference]: Start difference. First operand 10460 states and 51460 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:09,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:19:09,324 INFO L93 Difference]: Finished difference Result 15310 states and 70375 transitions. [2021-10-08 17:19:09,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-08 17:19:09,325 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:19:09,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:19:09,383 INFO L225 Difference]: With dead ends: 15310 [2021-10-08 17:19:09,383 INFO L226 Difference]: Without dead ends: 15296 [2021-10-08 17:19:09,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 953 ImplicationChecksByTransitivity, 4054.6ms TimeCoverageRelationStatistics Valid=855, Invalid=2805, Unknown=0, NotChecked=0, Total=3660 [2021-10-08 17:19:09,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15296 states. [2021-10-08 17:19:09,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15296 to 10666. [2021-10-08 17:19:09,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10666 states, 10665 states have (on average 4.925832161275199) internal successors, (52534), 10665 states have internal predecessors, (52534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:09,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10666 states to 10666 states and 52534 transitions. [2021-10-08 17:19:09,927 INFO L78 Accepts]: Start accepts. Automaton has 10666 states and 52534 transitions. Word has length 22 [2021-10-08 17:19:09,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:19:09,928 INFO L470 AbstractCegarLoop]: Abstraction has 10666 states and 52534 transitions. [2021-10-08 17:19:09,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:09,929 INFO L276 IsEmpty]: Start isEmpty. Operand 10666 states and 52534 transitions. [2021-10-08 17:19:09,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:19:09,971 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:19:09,971 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:19:09,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Ended with exit code 0 [2021-10-08 17:19:10,185 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 [2021-10-08 17:19:10,186 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:19:10,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:19:10,187 INFO L82 PathProgramCache]: Analyzing trace with hash -958435289, now seen corresponding path program 49 times [2021-10-08 17:19:10,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:19:10,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728424011] [2021-10-08 17:19:10,188 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:19:10,188 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:19:10,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:19:10,189 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) [2021-10-08 17:19:10,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-08 17:19:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:19:11,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:19:11,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:19:12,359 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:12,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:19:13,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:13,215 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:19:13,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728424011] [2021-10-08 17:19:13,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1728424011] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:19:13,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:19:13,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:19:13,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221953138] [2021-10-08 17:19:13,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:19:13,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:19:13,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:19:13,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:19:13,216 INFO L87 Difference]: Start difference. First operand 10666 states and 52534 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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) [2021-10-08 17:19:16,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:19:16,499 INFO L93 Difference]: Finished difference Result 14646 states and 67927 transitions. [2021-10-08 17:19:16,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 17:19:16,500 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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) Word has length 22 [2021-10-08 17:19:16,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:19:16,558 INFO L225 Difference]: With dead ends: 14646 [2021-10-08 17:19:16,559 INFO L226 Difference]: Without dead ends: 14632 [2021-10-08 17:19:16,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 3165.9ms TimeCoverageRelationStatistics Valid=648, Invalid=1902, Unknown=0, NotChecked=0, Total=2550 [2021-10-08 17:19:16,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14632 states. [2021-10-08 17:19:16,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14632 to 10784. [2021-10-08 17:19:16,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10784 states, 10783 states have (on average 4.927478438282482) internal successors, (53133), 10783 states have internal predecessors, (53133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:17,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10784 states to 10784 states and 53133 transitions. [2021-10-08 17:19:17,032 INFO L78 Accepts]: Start accepts. Automaton has 10784 states and 53133 transitions. Word has length 22 [2021-10-08 17:19:17,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:19:17,032 INFO L470 AbstractCegarLoop]: Abstraction has 10784 states and 53133 transitions. [2021-10-08 17:19:17,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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) [2021-10-08 17:19:17,033 INFO L276 IsEmpty]: Start isEmpty. Operand 10784 states and 53133 transitions. [2021-10-08 17:19:17,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:19:17,060 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:19:17,061 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:19:17,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-08 17:19:17,261 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 [2021-10-08 17:19:17,262 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:19:17,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:19:17,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1010933965, now seen corresponding path program 50 times [2021-10-08 17:19:17,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:19:17,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355732753] [2021-10-08 17:19:17,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:19:17,264 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:19:17,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:19:17,265 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) [2021-10-08 17:19:17,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-08 17:19:18,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:19:18,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:19:18,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:19:18,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:19:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:19,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:19:20,390 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:19:20,390 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:19:20,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355732753] [2021-10-08 17:19:20,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355732753] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:19:20,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:19:20,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2021-10-08 17:19:20,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631065186] [2021-10-08 17:19:20,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:19:20,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:19:20,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:19:20,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:19:20,392 INFO L87 Difference]: Start difference. First operand 10784 states and 53133 transitions. Second operand has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:21,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:19:21,554 INFO L93 Difference]: Finished difference Result 12359 states and 59189 transitions. [2021-10-08 17:19:21,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 17:19:21,555 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:19:21,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:19:21,603 INFO L225 Difference]: With dead ends: 12359 [2021-10-08 17:19:21,603 INFO L226 Difference]: Without dead ends: 12352 [2021-10-08 17:19:21,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 948.1ms TimeCoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2021-10-08 17:19:21,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12352 states. [2021-10-08 17:19:21,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12352 to 10890. [2021-10-08 17:19:21,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10890 states, 10889 states have (on average 4.927725227293599) internal successors, (53658), 10889 states have internal predecessors, (53658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:21,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10890 states to 10890 states and 53658 transitions. [2021-10-08 17:19:21,963 INFO L78 Accepts]: Start accepts. Automaton has 10890 states and 53658 transitions. Word has length 22 [2021-10-08 17:19:21,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:19:21,963 INFO L470 AbstractCegarLoop]: Abstraction has 10890 states and 53658 transitions. [2021-10-08 17:19:21,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:21,963 INFO L276 IsEmpty]: Start isEmpty. Operand 10890 states and 53658 transitions. [2021-10-08 17:19:21,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:19:21,991 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:19:21,991 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:19:22,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-08 17:19:22,197 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 [2021-10-08 17:19:22,198 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:19:22,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:19:22,198 INFO L82 PathProgramCache]: Analyzing trace with hash 73481101, now seen corresponding path program 51 times [2021-10-08 17:19:22,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:19:22,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835917314] [2021-10-08 17:19:22,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:19:22,200 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:19:22,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:19:22,201 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) [2021-10-08 17:19:22,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-08 17:19:24,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:19:24,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:19:24,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:19:24,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:19:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:24,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:19:25,630 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:25,630 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:19:25,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835917314] [2021-10-08 17:19:25,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835917314] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:19:25,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:19:25,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:19:25,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780412981] [2021-10-08 17:19:25,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:19:25,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:19:25,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:19:25,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:19:25,633 INFO L87 Difference]: Start difference. First operand 10890 states and 53658 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:30,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:19:30,604 INFO L93 Difference]: Finished difference Result 15252 states and 70348 transitions. [2021-10-08 17:19:30,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-08 17:19:30,605 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:19:30,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:19:30,665 INFO L225 Difference]: With dead ends: 15252 [2021-10-08 17:19:30,666 INFO L226 Difference]: Without dead ends: 15238 [2021-10-08 17:19:30,666 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 4569.4ms TimeCoverageRelationStatistics Valid=849, Invalid=2691, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 17:19:30,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15238 states. [2021-10-08 17:19:31,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15238 to 11070. [2021-10-08 17:19:31,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11070 states, 11069 states have (on average 4.940283675128738) internal successors, (54684), 11069 states have internal predecessors, (54684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:31,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11070 states to 11070 states and 54684 transitions. [2021-10-08 17:19:31,085 INFO L78 Accepts]: Start accepts. Automaton has 11070 states and 54684 transitions. Word has length 22 [2021-10-08 17:19:31,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:19:31,085 INFO L470 AbstractCegarLoop]: Abstraction has 11070 states and 54684 transitions. [2021-10-08 17:19:31,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:31,085 INFO L276 IsEmpty]: Start isEmpty. Operand 11070 states and 54684 transitions. [2021-10-08 17:19:31,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:19:31,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:19:31,114 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:19:31,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-08 17:19:31,314 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 [2021-10-08 17:19:31,315 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:19:31,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:19:31,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1728154387, now seen corresponding path program 52 times [2021-10-08 17:19:31,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:19:31,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405973665] [2021-10-08 17:19:31,317 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:19:31,317 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:19:31,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:19:31,320 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) [2021-10-08 17:19:31,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-08 17:19:33,173 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:19:33,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:19:33,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:19:33,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:19:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:33,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:19:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:34,388 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:19:34,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405973665] [2021-10-08 17:19:34,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405973665] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:19:34,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:19:34,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:19:34,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154339709] [2021-10-08 17:19:34,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:19:34,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:19:34,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:19:34,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:19:34,394 INFO L87 Difference]: Start difference. First operand 11070 states and 54684 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:37,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:19:37,485 INFO L93 Difference]: Finished difference Result 15029 states and 69677 transitions. [2021-10-08 17:19:37,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 17:19:37,486 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:19:37,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:19:37,552 INFO L225 Difference]: With dead ends: 15029 [2021-10-08 17:19:37,552 INFO L226 Difference]: Without dead ends: 14996 [2021-10-08 17:19:37,553 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 2755.0ms TimeCoverageRelationStatistics Valid=546, Invalid=1904, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 17:19:37,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14996 states. [2021-10-08 17:19:37,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14996 to 11568. [2021-10-08 17:19:37,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11568 states, 11567 states have (on average 4.9254776519408665) internal successors, (56973), 11567 states have internal predecessors, (56973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:37,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11568 states to 11568 states and 56973 transitions. [2021-10-08 17:19:37,953 INFO L78 Accepts]: Start accepts. Automaton has 11568 states and 56973 transitions. Word has length 22 [2021-10-08 17:19:37,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:19:37,954 INFO L470 AbstractCegarLoop]: Abstraction has 11568 states and 56973 transitions. [2021-10-08 17:19:37,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:37,954 INFO L276 IsEmpty]: Start isEmpty. Operand 11568 states and 56973 transitions. [2021-10-08 17:19:37,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:19:37,985 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:19:37,985 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:19:38,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-08 17:19:38,185 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 [2021-10-08 17:19:38,186 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:19:38,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:19:38,187 INFO L82 PathProgramCache]: Analyzing trace with hash 224601971, now seen corresponding path program 53 times [2021-10-08 17:19:38,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:19:38,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116161521] [2021-10-08 17:19:38,188 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:19:38,188 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:19:38,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:19:38,189 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) [2021-10-08 17:19:38,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-08 17:19:39,970 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:19:39,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:19:39,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:19:39,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:19:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:40,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:19:41,581 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:41,581 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:19:41,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116161521] [2021-10-08 17:19:41,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116161521] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:19:41,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:19:41,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2021-10-08 17:19:41,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64020100] [2021-10-08 17:19:41,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:19:41,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:19:41,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:19:41,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:19:41,583 INFO L87 Difference]: Start difference. First operand 11568 states and 56973 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:47,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:19:47,478 INFO L93 Difference]: Finished difference Result 16151 states and 73956 transitions. [2021-10-08 17:19:47,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-08 17:19:47,479 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:19:47,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:19:47,546 INFO L225 Difference]: With dead ends: 16151 [2021-10-08 17:19:47,546 INFO L226 Difference]: Without dead ends: 16130 [2021-10-08 17:19:47,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1202 ImplicationChecksByTransitivity, 4999.9ms TimeCoverageRelationStatistics Valid=946, Invalid=3746, Unknown=0, NotChecked=0, Total=4692 [2021-10-08 17:19:47,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16130 states. [2021-10-08 17:19:47,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16130 to 12020. [2021-10-08 17:19:47,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12020 states, 12019 states have (on average 4.932440302853815) internal successors, (59283), 12019 states have internal predecessors, (59283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:47,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12020 states to 12020 states and 59283 transitions. [2021-10-08 17:19:47,998 INFO L78 Accepts]: Start accepts. Automaton has 12020 states and 59283 transitions. Word has length 22 [2021-10-08 17:19:47,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:19:47,999 INFO L470 AbstractCegarLoop]: Abstraction has 12020 states and 59283 transitions. [2021-10-08 17:19:47,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:47,999 INFO L276 IsEmpty]: Start isEmpty. Operand 12020 states and 59283 transitions. [2021-10-08 17:19:48,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:19:48,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:19:48,033 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:19:48,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Ended with exit code 0 [2021-10-08 17:19:48,248 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 [2021-10-08 17:19:48,249 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:19:48,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:19:48,249 INFO L82 PathProgramCache]: Analyzing trace with hash -43409001, now seen corresponding path program 54 times [2021-10-08 17:19:48,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:19:48,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854710128] [2021-10-08 17:19:48,250 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:19:48,250 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:19:48,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:19:48,252 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) [2021-10-08 17:19:48,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-08 17:19:50,214 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 17:19:50,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:19:50,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:19:50,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:19:50,802 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:50,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:19:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:51,601 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:19:51,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854710128] [2021-10-08 17:19:51,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854710128] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:19:51,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:19:51,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:19:51,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783175750] [2021-10-08 17:19:51,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:19:51,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:19:51,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:19:51,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:19:51,603 INFO L87 Difference]: Start difference. First operand 12020 states and 59283 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:55,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:19:55,057 INFO L93 Difference]: Finished difference Result 17339 states and 79843 transitions. [2021-10-08 17:19:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 17:19:55,058 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:19:55,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:19:55,134 INFO L225 Difference]: With dead ends: 17339 [2021-10-08 17:19:55,134 INFO L226 Difference]: Without dead ends: 17332 [2021-10-08 17:19:55,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 3147.7ms TimeCoverageRelationStatistics Valid=571, Invalid=1781, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 17:19:55,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17332 states. [2021-10-08 17:19:55,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17332 to 12162. [2021-10-08 17:19:55,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12162 states, 12161 states have (on average 4.935202697146616) internal successors, (60017), 12161 states have internal predecessors, (60017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:55,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12162 states to 12162 states and 60017 transitions. [2021-10-08 17:19:55,713 INFO L78 Accepts]: Start accepts. Automaton has 12162 states and 60017 transitions. Word has length 22 [2021-10-08 17:19:55,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:19:55,714 INFO L470 AbstractCegarLoop]: Abstraction has 12162 states and 60017 transitions. [2021-10-08 17:19:55,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:55,714 INFO L276 IsEmpty]: Start isEmpty. Operand 12162 states and 60017 transitions. [2021-10-08 17:19:55,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:19:55,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:19:55,745 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:19:55,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-08 17:19:55,951 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 [2021-10-08 17:19:55,952 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:19:55,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:19:55,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1544767621, now seen corresponding path program 55 times [2021-10-08 17:19:55,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:19:55,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862777806] [2021-10-08 17:19:55,959 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:19:55,959 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:19:55,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:19:55,961 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) [2021-10-08 17:19:55,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-08 17:19:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:19:57,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:19:57,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:19:58,248 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:58,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:19:59,270 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:19:59,270 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:19:59,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862777806] [2021-10-08 17:19:59,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862777806] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:19:59,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:19:59,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2021-10-08 17:19:59,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212170675] [2021-10-08 17:19:59,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:19:59,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:19:59,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:19:59,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:19:59,272 INFO L87 Difference]: Start difference. First operand 12162 states and 60017 transitions. Second operand has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:20:01,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:20:01,615 INFO L93 Difference]: Finished difference Result 17115 states and 81539 transitions. [2021-10-08 17:20:01,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 17:20:01,616 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:20:01,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:20:01,690 INFO L225 Difference]: With dead ends: 17115 [2021-10-08 17:20:01,690 INFO L226 Difference]: Without dead ends: 17108 [2021-10-08 17:20:01,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 2097.4ms TimeCoverageRelationStatistics Valid=362, Invalid=1120, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 17:20:01,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17108 states. [2021-10-08 17:20:02,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17108 to 13380. [2021-10-08 17:20:02,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13380 states, 13379 states have (on average 4.973465879363181) internal successors, (66540), 13379 states have internal predecessors, (66540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:20:02,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13380 states to 13380 states and 66540 transitions. [2021-10-08 17:20:02,384 INFO L78 Accepts]: Start accepts. Automaton has 13380 states and 66540 transitions. Word has length 22 [2021-10-08 17:20:02,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:20:02,384 INFO L470 AbstractCegarLoop]: Abstraction has 13380 states and 66540 transitions. [2021-10-08 17:20:02,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:20:02,384 INFO L276 IsEmpty]: Start isEmpty. Operand 13380 states and 66540 transitions. [2021-10-08 17:20:02,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:20:02,419 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:20:02,419 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:20:02,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-08 17:20:02,619 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 [2021-10-08 17:20:02,620 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:20:02,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:20:02,621 INFO L82 PathProgramCache]: Analyzing trace with hash 937783493, now seen corresponding path program 56 times [2021-10-08 17:20:02,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:20:02,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151638203] [2021-10-08 17:20:02,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:20:02,622 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:20:02,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:20:02,623 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) [2021-10-08 17:20:02,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-08 17:20:04,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:20:04,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:20:04,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:20:04,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:20:05,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:20:05,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:20:06,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:20:06,001 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:20:06,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151638203] [2021-10-08 17:20:06,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151638203] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:20:06,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:20:06,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:20:06,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882100747] [2021-10-08 17:20:06,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:20:06,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:20:06,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:20:06,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:20:06,003 INFO L87 Difference]: Start difference. First operand 13380 states and 66540 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:20:10,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:20:10,210 INFO L93 Difference]: Finished difference Result 18054 states and 84450 transitions. [2021-10-08 17:20:10,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 17:20:10,210 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:20:10,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:20:10,285 INFO L225 Difference]: With dead ends: 18054 [2021-10-08 17:20:10,285 INFO L226 Difference]: Without dead ends: 18040 [2021-10-08 17:20:10,285 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 3739.3ms TimeCoverageRelationStatistics Valid=662, Invalid=2200, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 17:20:10,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18040 states. [2021-10-08 17:20:10,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18040 to 13572. [2021-10-08 17:20:10,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13572 states, 13571 states have (on average 4.980325694495615) internal successors, (67588), 13571 states have internal predecessors, (67588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:20:10,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13572 states to 13572 states and 67588 transitions. [2021-10-08 17:20:10,906 INFO L78 Accepts]: Start accepts. Automaton has 13572 states and 67588 transitions. Word has length 22 [2021-10-08 17:20:10,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:20:10,906 INFO L470 AbstractCegarLoop]: Abstraction has 13572 states and 67588 transitions. [2021-10-08 17:20:10,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:20:10,907 INFO L276 IsEmpty]: Start isEmpty. Operand 13572 states and 67588 transitions. [2021-10-08 17:20:10,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:20:10,943 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:20:10,943 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:20:10,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-08 17:20:11,144 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 [2021-10-08 17:20:11,144 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:20:11,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:20:11,145 INFO L82 PathProgramCache]: Analyzing trace with hash -651776149, now seen corresponding path program 57 times [2021-10-08 17:20:11,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:20:11,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231073171] [2021-10-08 17:20:11,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:20:11,146 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:20:11,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:20:11,147 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) [2021-10-08 17:20:11,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-08 17:20:13,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 17:20:13,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:20:13,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:20:13,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:20:13,755 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:20:13,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:20:14,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:20:14,505 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:20:14,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231073171] [2021-10-08 17:20:14,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231073171] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:20:14,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:20:14,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:20:14,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816062997] [2021-10-08 17:20:14,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:20:14,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:20:14,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:20:14,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:20:14,506 INFO L87 Difference]: Start difference. First operand 13572 states and 67588 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:20:19,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:20:19,743 INFO L93 Difference]: Finished difference Result 18990 states and 89046 transitions. [2021-10-08 17:20:19,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-08 17:20:19,743 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:20:19,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:20:19,820 INFO L225 Difference]: With dead ends: 18990 [2021-10-08 17:20:19,821 INFO L226 Difference]: Without dead ends: 18976 [2021-10-08 17:20:19,821 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 4550.9ms TimeCoverageRelationStatistics Valid=864, Invalid=2796, Unknown=0, NotChecked=0, Total=3660 [2021-10-08 17:20:19,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18976 states. [2021-10-08 17:20:20,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18976 to 13800. [2021-10-08 17:20:20,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13800 states, 13799 states have (on average 4.991376186680194) internal successors, (68876), 13799 states have internal predecessors, (68876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:20:20,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13800 states to 13800 states and 68876 transitions. [2021-10-08 17:20:20,494 INFO L78 Accepts]: Start accepts. Automaton has 13800 states and 68876 transitions. Word has length 22 [2021-10-08 17:20:20,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:20:20,494 INFO L470 AbstractCegarLoop]: Abstraction has 13800 states and 68876 transitions. [2021-10-08 17:20:20,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:20:20,494 INFO L276 IsEmpty]: Start isEmpty. Operand 13800 states and 68876 transitions. [2021-10-08 17:20:20,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:20:20,533 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:20:20,533 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:20:20,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-08 17:20:20,734 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 [2021-10-08 17:20:20,734 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:20:20,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:20:20,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1051739091, now seen corresponding path program 58 times [2021-10-08 17:20:20,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:20:20,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386933407] [2021-10-08 17:20:20,736 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:20:20,737 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:20:20,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:20:20,738 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) [2021-10-08 17:20:20,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-08 17:20:22,568 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:20:22,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:20:22,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:20:22,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:20:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:20:23,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:20:23,945 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:20:23,945 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:20:23,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386933407] [2021-10-08 17:20:23,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386933407] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:20:23,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:20:23,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-08 17:20:23,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118459536] [2021-10-08 17:20:23,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:20:23,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:20:23,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:20:23,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:20:23,947 INFO L87 Difference]: Start difference. First operand 13800 states and 68876 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:20:28,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:20:28,136 INFO L93 Difference]: Finished difference Result 17816 states and 83427 transitions. [2021-10-08 17:20:28,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-08 17:20:28,137 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:20:28,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:20:28,209 INFO L225 Difference]: With dead ends: 17816 [2021-10-08 17:20:28,209 INFO L226 Difference]: Without dead ends: 17788 [2021-10-08 17:20:28,210 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 3612.5ms TimeCoverageRelationStatistics Valid=845, Invalid=2695, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 17:20:28,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17788 states. [2021-10-08 17:20:28,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17788 to 14016. [2021-10-08 17:20:28,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14016 states, 14015 states have (on average 4.986585800927577) internal successors, (69887), 14015 states have internal predecessors, (69887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:20:28,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14016 states to 14016 states and 69887 transitions. [2021-10-08 17:20:28,802 INFO L78 Accepts]: Start accepts. Automaton has 14016 states and 69887 transitions. Word has length 22 [2021-10-08 17:20:28,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:20:28,802 INFO L470 AbstractCegarLoop]: Abstraction has 14016 states and 69887 transitions. [2021-10-08 17:20:28,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:20:28,803 INFO L276 IsEmpty]: Start isEmpty. Operand 14016 states and 69887 transitions. [2021-10-08 17:20:28,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:20:28,845 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:20:28,845 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:20:28,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-08 17:20:29,045 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 [2021-10-08 17:20:29,046 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:20:29,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:20:29,047 INFO L82 PathProgramCache]: Analyzing trace with hash -2019616589, now seen corresponding path program 59 times [2021-10-08 17:20:29,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:20:29,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190001365] [2021-10-08 17:20:29,048 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:20:29,048 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:20:29,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:20:29,049 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) [2021-10-08 17:20:29,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-08 17:20:31,313 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:20:31,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:20:31,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:20:31,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:20:32,196 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:20:32,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:20:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:20:32,844 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:20:32,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190001365] [2021-10-08 17:20:32,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190001365] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:20:32,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:20:32,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2021-10-08 17:20:32,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608772066] [2021-10-08 17:20:32,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:20:32,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:20:32,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:20:32,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:20:32,845 INFO L87 Difference]: Start difference. First operand 14016 states and 69887 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:20:38,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:20:38,990 INFO L93 Difference]: Finished difference Result 19573 states and 90684 transitions. [2021-10-08 17:20:38,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-10-08 17:20:38,990 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:20:38,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:20:39,074 INFO L225 Difference]: With dead ends: 19573 [2021-10-08 17:20:39,074 INFO L226 Difference]: Without dead ends: 19552 [2021-10-08 17:20:39,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1658 ImplicationChecksByTransitivity, 5428.2ms TimeCoverageRelationStatistics Valid=1209, Invalid=4643, Unknown=0, NotChecked=0, Total=5852 [2021-10-08 17:20:39,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19552 states. [2021-10-08 17:20:39,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19552 to 14352. [2021-10-08 17:20:39,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14352 states, 14351 states have (on average 4.996585603790677) internal successors, (71706), 14351 states have internal predecessors, (71706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:20:39,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14352 states to 14352 states and 71706 transitions. [2021-10-08 17:20:39,683 INFO L78 Accepts]: Start accepts. Automaton has 14352 states and 71706 transitions. Word has length 22 [2021-10-08 17:20:39,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:20:39,684 INFO L470 AbstractCegarLoop]: Abstraction has 14352 states and 71706 transitions. [2021-10-08 17:20:39,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:20:39,684 INFO L276 IsEmpty]: Start isEmpty. Operand 14352 states and 71706 transitions. [2021-10-08 17:20:39,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:20:39,725 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:20:39,725 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:20:39,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-08 17:20:39,934 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 [2021-10-08 17:20:39,935 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:20:39,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:20:39,935 INFO L82 PathProgramCache]: Analyzing trace with hash -950442465, now seen corresponding path program 60 times [2021-10-08 17:20:39,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:20:39,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950671873] [2021-10-08 17:20:39,936 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:20:39,937 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:20:39,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:20:39,938 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) [2021-10-08 17:20:39,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-08 17:20:42,273 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 17:20:42,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:20:42,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:20:42,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:20:42,870 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:20:42,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:20:43,754 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:20:43,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:20:43,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950671873] [2021-10-08 17:20:43,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950671873] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:20:43,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:20:43,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:20:43,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151969145] [2021-10-08 17:20:43,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:20:43,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:20:43,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:20:43,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:20:43,756 INFO L87 Difference]: Start difference. First operand 14352 states and 71706 transitions. Second operand has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:20:48,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:20:48,310 INFO L93 Difference]: Finished difference Result 19959 states and 93078 transitions. [2021-10-08 17:20:48,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-08 17:20:48,311 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:20:48,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:20:48,392 INFO L225 Difference]: With dead ends: 19959 [2021-10-08 17:20:48,392 INFO L226 Difference]: Without dead ends: 19952 [2021-10-08 17:20:48,393 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 4152.7ms TimeCoverageRelationStatistics Valid=768, Invalid=2538, Unknown=0, NotChecked=0, Total=3306 [2021-10-08 17:20:48,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19952 states. [2021-10-08 17:20:48,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19952 to 14574. [2021-10-08 17:20:48,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14574 states, 14573 states have (on average 4.998147258628971) internal successors, (72838), 14573 states have internal predecessors, (72838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:20:49,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14574 states to 14574 states and 72838 transitions. [2021-10-08 17:20:49,008 INFO L78 Accepts]: Start accepts. Automaton has 14574 states and 72838 transitions. Word has length 22 [2021-10-08 17:20:49,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:20:49,008 INFO L470 AbstractCegarLoop]: Abstraction has 14574 states and 72838 transitions. [2021-10-08 17:20:49,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:20:49,008 INFO L276 IsEmpty]: Start isEmpty. Operand 14574 states and 72838 transitions. [2021-10-08 17:20:49,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:20:49,050 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:20:49,051 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:20:49,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-08 17:20:49,251 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 [2021-10-08 17:20:49,251 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:20:49,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:20:49,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1325052839, now seen corresponding path program 61 times [2021-10-08 17:20:49,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:20:49,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84805540] [2021-10-08 17:20:49,253 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:20:49,253 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:20:49,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:20:49,254 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) [2021-10-08 17:20:49,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-08 17:20:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:20:51,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:20:51,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:20:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:20:52,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:20:52,772 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:20:52,772 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:20:52,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84805540] [2021-10-08 17:20:52,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84805540] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:20:52,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:20:52,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:20:52,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264510585] [2021-10-08 17:20:52,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:20:52,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:20:52,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:20:52,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:20:52,774 INFO L87 Difference]: Start difference. First operand 14574 states and 72838 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:20:57,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:20:57,513 INFO L93 Difference]: Finished difference Result 19886 states and 92871 transitions. [2021-10-08 17:20:57,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-08 17:20:57,513 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:20:57,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:20:57,588 INFO L225 Difference]: With dead ends: 19886 [2021-10-08 17:20:57,589 INFO L226 Difference]: Without dead ends: 19872 [2021-10-08 17:20:57,589 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 4204.2ms TimeCoverageRelationStatistics Valid=673, Invalid=2083, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 17:20:57,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19872 states. [2021-10-08 17:20:58,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19872 to 14640. [2021-10-08 17:20:58,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14640 states, 14639 states have (on average 4.999863378646082) internal successors, (73193), 14639 states have internal predecessors, (73193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:20:58,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14640 states to 14640 states and 73193 transitions. [2021-10-08 17:20:58,202 INFO L78 Accepts]: Start accepts. Automaton has 14640 states and 73193 transitions. Word has length 22 [2021-10-08 17:20:58,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:20:58,202 INFO L470 AbstractCegarLoop]: Abstraction has 14640 states and 73193 transitions. [2021-10-08 17:20:58,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:20:58,202 INFO L276 IsEmpty]: Start isEmpty. Operand 14640 states and 73193 transitions. [2021-10-08 17:20:58,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:20:58,242 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:20:58,242 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:20:58,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-08 17:20:58,448 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 [2021-10-08 17:20:58,449 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:20:58,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:20:58,449 INFO L82 PathProgramCache]: Analyzing trace with hash -493110349, now seen corresponding path program 62 times [2021-10-08 17:20:58,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:20:58,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370252595] [2021-10-08 17:20:58,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:20:58,450 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:20:58,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:20:58,452 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) [2021-10-08 17:20:58,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-08 17:21:00,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:21:00,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:21:00,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:21:00,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:21:01,343 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:21:01,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:21:02,320 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:21:02,320 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:21:02,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370252595] [2021-10-08 17:21:02,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370252595] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:21:02,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:21:02,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2021-10-08 17:21:02,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415555761] [2021-10-08 17:21:02,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:21:02,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:21:02,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:21:02,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:21:02,322 INFO L87 Difference]: Start difference. First operand 14640 states and 73193 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:21:04,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:21:04,056 INFO L93 Difference]: Finished difference Result 18455 states and 88633 transitions. [2021-10-08 17:21:04,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 17:21:04,057 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:21:04,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:21:04,215 INFO L225 Difference]: With dead ends: 18455 [2021-10-08 17:21:04,215 INFO L226 Difference]: Without dead ends: 18448 [2021-10-08 17:21:04,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1553.4ms TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 17:21:04,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18448 states. [2021-10-08 17:21:04,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18448 to 14816. [2021-10-08 17:21:04,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14816 states, 14815 states have (on average 4.9925750928113395) internal successors, (73965), 14815 states have internal predecessors, (73965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:21:04,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14816 states to 14816 states and 73965 transitions. [2021-10-08 17:21:04,784 INFO L78 Accepts]: Start accepts. Automaton has 14816 states and 73965 transitions. Word has length 22 [2021-10-08 17:21:04,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:21:04,784 INFO L470 AbstractCegarLoop]: Abstraction has 14816 states and 73965 transitions. [2021-10-08 17:21:04,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:21:04,784 INFO L276 IsEmpty]: Start isEmpty. Operand 14816 states and 73965 transitions. [2021-10-08 17:21:04,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:21:04,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:21:04,824 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:21:04,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-08 17:21:05,025 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 [2021-10-08 17:21:05,025 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:21:05,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:21:05,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1120456385, now seen corresponding path program 63 times [2021-10-08 17:21:05,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:21:05,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246971099] [2021-10-08 17:21:05,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:21:05,028 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:21:05,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:21:05,030 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) [2021-10-08 17:21:05,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-08 17:21:07,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:21:07,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:21:07,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:21:07,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:21:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:21:07,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:21:08,743 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:21:08,744 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:21:08,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246971099] [2021-10-08 17:21:08,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246971099] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:21:08,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:21:08,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:21:08,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431208599] [2021-10-08 17:21:08,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:21:08,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:21:08,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:21:08,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:21:08,746 INFO L87 Difference]: Start difference. First operand 14816 states and 73965 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:21:13,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:21:13,506 INFO L93 Difference]: Finished difference Result 20390 states and 96091 transitions. [2021-10-08 17:21:13,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-08 17:21:13,507 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:21:13,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:21:13,594 INFO L225 Difference]: With dead ends: 20390 [2021-10-08 17:21:13,594 INFO L226 Difference]: Without dead ends: 20376 [2021-10-08 17:21:13,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 4462.0ms TimeCoverageRelationStatistics Valid=905, Invalid=2877, Unknown=0, NotChecked=0, Total=3782 [2021-10-08 17:21:13,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20376 states. [2021-10-08 17:21:14,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20376 to 14996. [2021-10-08 17:21:14,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14996 states, 14995 states have (on average 4.996865621873958) internal successors, (74928), 14995 states have internal predecessors, (74928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:21:14,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14996 states to 14996 states and 74928 transitions. [2021-10-08 17:21:14,252 INFO L78 Accepts]: Start accepts. Automaton has 14996 states and 74928 transitions. Word has length 22 [2021-10-08 17:21:14,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:21:14,252 INFO L470 AbstractCegarLoop]: Abstraction has 14996 states and 74928 transitions. [2021-10-08 17:21:14,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:21:14,253 INFO L276 IsEmpty]: Start isEmpty. Operand 14996 states and 74928 transitions. [2021-10-08 17:21:14,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:21:14,291 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:21:14,291 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:21:14,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-08 17:21:14,492 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 [2021-10-08 17:21:14,493 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:21:14,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:21:14,494 INFO L82 PathProgramCache]: Analyzing trace with hash 513472257, now seen corresponding path program 64 times [2021-10-08 17:21:14,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:21:14,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57753208] [2021-10-08 17:21:14,495 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:21:14,495 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:21:14,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:21:14,495 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) [2021-10-08 17:21:14,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-08 17:21:16,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:21:16,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:21:16,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:21:16,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:21:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:21:17,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:21:18,181 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:21:18,182 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:21:18,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57753208] [2021-10-08 17:21:18,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57753208] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:21:18,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:21:18,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:21:18,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548823113] [2021-10-08 17:21:18,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:21:18,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:21:18,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:21:18,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:21:18,187 INFO L87 Difference]: Start difference. First operand 14996 states and 74928 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:21:23,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:21:23,183 INFO L93 Difference]: Finished difference Result 20017 states and 94264 transitions. [2021-10-08 17:21:23,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-08 17:21:23,184 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:21:23,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:21:23,273 INFO L225 Difference]: With dead ends: 20017 [2021-10-08 17:21:23,273 INFO L226 Difference]: Without dead ends: 20010 [2021-10-08 17:21:23,273 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 4418.5ms TimeCoverageRelationStatistics Valid=736, Invalid=2456, Unknown=0, NotChecked=0, Total=3192 [2021-10-08 17:21:23,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20010 states. [2021-10-08 17:21:23,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20010 to 15094. [2021-10-08 17:21:23,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15094 states, 15093 states have (on average 5.002517723447956) internal successors, (75503), 15093 states have internal predecessors, (75503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:21:23,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15094 states to 15094 states and 75503 transitions. [2021-10-08 17:21:23,935 INFO L78 Accepts]: Start accepts. Automaton has 15094 states and 75503 transitions. Word has length 22 [2021-10-08 17:21:23,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:21:23,936 INFO L470 AbstractCegarLoop]: Abstraction has 15094 states and 75503 transitions. [2021-10-08 17:21:23,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:21:23,936 INFO L276 IsEmpty]: Start isEmpty. Operand 15094 states and 75503 transitions. [2021-10-08 17:21:23,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:21:23,976 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:21:23,976 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:21:23,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-10-08 17:21:24,176 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 [2021-10-08 17:21:24,177 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:21:24,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:21:24,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1076087385, now seen corresponding path program 65 times [2021-10-08 17:21:24,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:21:24,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761650449] [2021-10-08 17:21:24,178 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:21:24,178 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:21:24,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:21:24,180 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) [2021-10-08 17:21:24,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-08 17:21:26,472 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:21:26,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:21:26,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:21:26,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:21:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:21:27,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:21:28,033 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:21:28,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:21:28,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761650449] [2021-10-08 17:21:28,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761650449] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:21:28,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:21:28,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2021-10-08 17:21:28,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511264843] [2021-10-08 17:21:28,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:21:28,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:21:28,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:21:28,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:21:28,036 INFO L87 Difference]: Start difference. First operand 15094 states and 75503 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:21:32,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:21:32,826 INFO L93 Difference]: Finished difference Result 21090 states and 98284 transitions. [2021-10-08 17:21:32,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-08 17:21:32,826 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:21:32,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:21:32,909 INFO L225 Difference]: With dead ends: 21090 [2021-10-08 17:21:32,909 INFO L226 Difference]: Without dead ends: 21076 [2021-10-08 17:21:32,910 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 4249.5ms TimeCoverageRelationStatistics Valid=799, Invalid=2623, Unknown=0, NotChecked=0, Total=3422 [2021-10-08 17:21:32,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21076 states. [2021-10-08 17:21:33,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21076 to 15332. [2021-10-08 17:21:33,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15332 states, 15331 states have (on average 5.015067510273303) internal successors, (76886), 15331 states have internal predecessors, (76886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:21:33,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15332 states to 15332 states and 76886 transitions. [2021-10-08 17:21:33,550 INFO L78 Accepts]: Start accepts. Automaton has 15332 states and 76886 transitions. Word has length 22 [2021-10-08 17:21:33,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:21:33,551 INFO L470 AbstractCegarLoop]: Abstraction has 15332 states and 76886 transitions. [2021-10-08 17:21:33,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:21:33,551 INFO L276 IsEmpty]: Start isEmpty. Operand 15332 states and 76886 transitions. [2021-10-08 17:21:33,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:21:33,595 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:21:33,595 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:21:33,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-10-08 17:21:33,795 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 [2021-10-08 17:21:33,796 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:21:33,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:21:33,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1113777439, now seen corresponding path program 66 times [2021-10-08 17:21:33,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:21:33,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673495163] [2021-10-08 17:21:33,798 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:21:33,798 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:21:33,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:21:33,799 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) [2021-10-08 17:21:33,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-08 17:21:36,385 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:21:36,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:21:36,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:21:36,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:21:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:21:36,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:21:37,488 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:21:37,488 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:21:37,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673495163] [2021-10-08 17:21:37,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673495163] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:21:37,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:21:37,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-08 17:21:37,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359677430] [2021-10-08 17:21:37,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:21:37,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:21:37,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:21:37,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:21:37,491 INFO L87 Difference]: Start difference. First operand 15332 states and 76886 transitions. Second operand has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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) [2021-10-08 17:21:39,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:21:39,568 INFO L93 Difference]: Finished difference Result 20021 states and 95098 transitions. [2021-10-08 17:21:39,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 17:21:39,568 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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) Word has length 22 [2021-10-08 17:21:39,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:21:39,647 INFO L225 Difference]: With dead ends: 20021 [2021-10-08 17:21:39,647 INFO L226 Difference]: Without dead ends: 20014 [2021-10-08 17:21:39,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 1851.3ms TimeCoverageRelationStatistics Valid=430, Invalid=1130, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 17:21:39,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20014 states. [2021-10-08 17:21:40,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20014 to 15518. [2021-10-08 17:21:40,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15518 states, 15517 states have (on average 5.010182380614809) internal successors, (77743), 15517 states have internal predecessors, (77743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:21:40,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15518 states to 15518 states and 77743 transitions. [2021-10-08 17:21:40,324 INFO L78 Accepts]: Start accepts. Automaton has 15518 states and 77743 transitions. Word has length 22 [2021-10-08 17:21:40,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:21:40,324 INFO L470 AbstractCegarLoop]: Abstraction has 15518 states and 77743 transitions. [2021-10-08 17:21:40,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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) [2021-10-08 17:21:40,325 INFO L276 IsEmpty]: Start isEmpty. Operand 15518 states and 77743 transitions. [2021-10-08 17:21:40,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:21:40,368 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:21:40,369 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:21:40,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-08 17:21:40,569 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 [2021-10-08 17:21:40,569 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:21:40,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:21:40,570 INFO L82 PathProgramCache]: Analyzing trace with hash 353961241, now seen corresponding path program 67 times [2021-10-08 17:21:40,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:21:40,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848175244] [2021-10-08 17:21:40,571 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:21:40,572 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:21:40,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:21:40,573 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) [2021-10-08 17:21:40,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-08 17:21:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:21:43,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:21:43,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:21:43,731 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:21:43,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:21:44,787 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:21:44,787 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:21:44,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848175244] [2021-10-08 17:21:44,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848175244] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:21:44,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:21:44,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:21:44,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231897884] [2021-10-08 17:21:44,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:21:44,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:21:44,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:21:44,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:21:44,789 INFO L87 Difference]: Start difference. First operand 15518 states and 77743 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:21:50,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:21:50,797 INFO L93 Difference]: Finished difference Result 20926 states and 98576 transitions. [2021-10-08 17:21:50,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-08 17:21:50,798 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:21:50,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:21:50,947 INFO L225 Difference]: With dead ends: 20926 [2021-10-08 17:21:50,948 INFO L226 Difference]: Without dead ends: 20912 [2021-10-08 17:21:50,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 5611.1ms TimeCoverageRelationStatistics Valid=566, Invalid=1786, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 17:21:50,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20912 states. [2021-10-08 17:21:51,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20912 to 15786. [2021-10-08 17:21:51,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15786 states, 15785 states have (on average 5.015901171998733) internal successors, (79176), 15785 states have internal predecessors, (79176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:21:51,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15786 states to 15786 states and 79176 transitions. [2021-10-08 17:21:51,860 INFO L78 Accepts]: Start accepts. Automaton has 15786 states and 79176 transitions. Word has length 22 [2021-10-08 17:21:51,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:21:51,862 INFO L470 AbstractCegarLoop]: Abstraction has 15786 states and 79176 transitions. [2021-10-08 17:21:51,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:21:51,862 INFO L276 IsEmpty]: Start isEmpty. Operand 15786 states and 79176 transitions. [2021-10-08 17:21:51,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:21:51,928 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:21:51,928 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:21:51,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Ended with exit code 0 [2021-10-08 17:21:52,146 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 [2021-10-08 17:21:52,146 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:21:52,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:21:52,147 INFO L82 PathProgramCache]: Analyzing trace with hash -583491623, now seen corresponding path program 68 times [2021-10-08 17:21:52,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:21:52,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508275065] [2021-10-08 17:21:52,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:21:52,148 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:21:52,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:21:52,153 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) [2021-10-08 17:21:52,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-08 17:21:56,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:21:56,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:21:56,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:21:56,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:21:57,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:21:57,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:21:58,239 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:21:58,240 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:21:58,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508275065] [2021-10-08 17:21:58,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508275065] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:21:58,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:21:58,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 17:21:58,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561237317] [2021-10-08 17:21:58,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 17:21:58,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:21:58,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 17:21:58,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:21:58,241 INFO L87 Difference]: Start difference. First operand 15786 states and 79176 transitions. Second operand has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:22:02,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:22:02,357 INFO L93 Difference]: Finished difference Result 21633 states and 103054 transitions. [2021-10-08 17:22:02,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-08 17:22:02,357 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:22:02,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:22:02,446 INFO L225 Difference]: With dead ends: 21633 [2021-10-08 17:22:02,446 INFO L226 Difference]: Without dead ends: 21619 [2021-10-08 17:22:02,447 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 968 ImplicationChecksByTransitivity, 3631.4ms TimeCoverageRelationStatistics Valid=732, Invalid=3050, Unknown=0, NotChecked=0, Total=3782 [2021-10-08 17:22:02,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21619 states. [2021-10-08 17:22:03,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21619 to 16728. [2021-10-08 17:22:03,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16728 states, 16727 states have (on average 5.030190709631135) internal successors, (84140), 16727 states have internal predecessors, (84140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:22:03,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16728 states to 16728 states and 84140 transitions. [2021-10-08 17:22:03,262 INFO L78 Accepts]: Start accepts. Automaton has 16728 states and 84140 transitions. Word has length 22 [2021-10-08 17:22:03,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:22:03,262 INFO L470 AbstractCegarLoop]: Abstraction has 16728 states and 84140 transitions. [2021-10-08 17:22:03,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:22:03,262 INFO L276 IsEmpty]: Start isEmpty. Operand 16728 states and 84140 transitions. [2021-10-08 17:22:03,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:22:03,311 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:22:03,311 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:22:03,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Ended with exit code 0 [2021-10-08 17:22:03,511 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 [2021-10-08 17:22:03,512 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:22:03,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:22:03,513 INFO L82 PathProgramCache]: Analyzing trace with hash -487157573, now seen corresponding path program 69 times [2021-10-08 17:22:03,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:22:03,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639569496] [2021-10-08 17:22:03,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:22:03,514 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:22:03,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:22:03,515 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) [2021-10-08 17:22:03,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-08 17:22:05,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:22:05,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:22:05,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:22:05,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:22:06,575 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:22:06,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:22:07,251 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:22:07,252 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:22:07,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639569496] [2021-10-08 17:22:07,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639569496] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:22:07,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:22:07,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:22:07,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570797243] [2021-10-08 17:22:07,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:22:07,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:22:07,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:22:07,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:22:07,254 INFO L87 Difference]: Start difference. First operand 16728 states and 84140 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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) [2021-10-08 17:22:11,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:22:11,490 INFO L93 Difference]: Finished difference Result 23235 states and 109536 transitions. [2021-10-08 17:22:11,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-08 17:22:11,490 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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) Word has length 22 [2021-10-08 17:22:11,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:22:11,598 INFO L225 Difference]: With dead ends: 23235 [2021-10-08 17:22:11,598 INFO L226 Difference]: Without dead ends: 23228 [2021-10-08 17:22:11,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 3863.8ms TimeCoverageRelationStatistics Valid=904, Invalid=2878, Unknown=0, NotChecked=0, Total=3782 [2021-10-08 17:22:11,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23228 states. [2021-10-08 17:22:12,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23228 to 17052. [2021-10-08 17:22:12,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17052 states, 17051 states have (on average 5.031493754032022) internal successors, (85792), 17051 states have internal predecessors, (85792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:22:12,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17052 states to 17052 states and 85792 transitions. [2021-10-08 17:22:12,439 INFO L78 Accepts]: Start accepts. Automaton has 17052 states and 85792 transitions. Word has length 22 [2021-10-08 17:22:12,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:22:12,439 INFO L470 AbstractCegarLoop]: Abstraction has 17052 states and 85792 transitions. [2021-10-08 17:22:12,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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) [2021-10-08 17:22:12,439 INFO L276 IsEmpty]: Start isEmpty. Operand 17052 states and 85792 transitions. [2021-10-08 17:22:12,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:22:12,490 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:22:12,490 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:22:12,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Ended with exit code 0 [2021-10-08 17:22:12,691 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 [2021-10-08 17:22:12,691 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:22:12,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:22:12,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1509768249, now seen corresponding path program 70 times [2021-10-08 17:22:12,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:22:12,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749149737] [2021-10-08 17:22:12,693 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:22:12,694 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:22:12,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:22:12,695 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) [2021-10-08 17:22:12,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-08 17:22:15,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:22:15,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:22:15,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:22:15,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:22:15,732 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:22:15,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:22:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:22:16,371 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:22:16,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749149737] [2021-10-08 17:22:16,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749149737] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:22:16,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:22:16,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:22:16,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431192933] [2021-10-08 17:22:16,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:22:16,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:22:16,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:22:16,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:22:16,372 INFO L87 Difference]: Start difference. First operand 17052 states and 85792 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:22:20,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:22:20,005 INFO L93 Difference]: Finished difference Result 21324 states and 101182 transitions. [2021-10-08 17:22:20,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-08 17:22:20,005 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:22:20,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:22:20,105 INFO L225 Difference]: With dead ends: 21324 [2021-10-08 17:22:20,105 INFO L226 Difference]: Without dead ends: 21270 [2021-10-08 17:22:20,106 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 3210.4ms TimeCoverageRelationStatistics Valid=810, Invalid=2850, Unknown=0, NotChecked=0, Total=3660 [2021-10-08 17:22:20,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21270 states. [2021-10-08 17:22:20,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21270 to 17180. [2021-10-08 17:22:20,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17180 states, 17179 states have (on average 5.030036672681763) internal successors, (86411), 17179 states have internal predecessors, (86411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:22:20,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17180 states to 17180 states and 86411 transitions. [2021-10-08 17:22:20,863 INFO L78 Accepts]: Start accepts. Automaton has 17180 states and 86411 transitions. Word has length 22 [2021-10-08 17:22:20,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:22:20,863 INFO L470 AbstractCegarLoop]: Abstraction has 17180 states and 86411 transitions. [2021-10-08 17:22:20,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:22:20,863 INFO L276 IsEmpty]: Start isEmpty. Operand 17180 states and 86411 transitions. [2021-10-08 17:22:20,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:22:20,910 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:22:20,910 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:22:20,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-08 17:22:21,111 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 [2021-10-08 17:22:21,111 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:22:21,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:22:21,112 INFO L82 PathProgramCache]: Analyzing trace with hash -286156633, now seen corresponding path program 71 times [2021-10-08 17:22:21,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:22:21,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725142875] [2021-10-08 17:22:21,113 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:22:21,113 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:22:21,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:22:21,114 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) [2021-10-08 17:22:21,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-08 17:22:23,596 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:22:23,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:22:23,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:22:23,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:22:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:22:24,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:22:24,842 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:22:24,843 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:22:24,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725142875] [2021-10-08 17:22:24,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725142875] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:22:24,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:22:24,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-10-08 17:22:24,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810790917] [2021-10-08 17:22:24,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 17:22:24,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:22:24,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 17:22:24,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:22:24,845 INFO L87 Difference]: Start difference. First operand 17180 states and 86411 transitions. Second operand has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:22:27,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:22:27,806 INFO L93 Difference]: Finished difference Result 22090 states and 104841 transitions. [2021-10-08 17:22:27,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-08 17:22:27,807 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:22:27,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:22:27,895 INFO L225 Difference]: With dead ends: 22090 [2021-10-08 17:22:27,895 INFO L226 Difference]: Without dead ends: 22032 [2021-10-08 17:22:27,895 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 2526.1ms TimeCoverageRelationStatistics Valid=670, Invalid=2086, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 17:22:27,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22032 states. [2021-10-08 17:22:28,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22032 to 17808. [2021-10-08 17:22:28,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17808 states, 17807 states have (on average 5.040433537372944) internal successors, (89755), 17807 states have internal predecessors, (89755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:22:28,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17808 states to 17808 states and 89755 transitions. [2021-10-08 17:22:28,772 INFO L78 Accepts]: Start accepts. Automaton has 17808 states and 89755 transitions. Word has length 22 [2021-10-08 17:22:28,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:22:28,772 INFO L470 AbstractCegarLoop]: Abstraction has 17808 states and 89755 transitions. [2021-10-08 17:22:28,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:22:28,772 INFO L276 IsEmpty]: Start isEmpty. Operand 17808 states and 89755 transitions. [2021-10-08 17:22:28,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:22:28,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:22:28,825 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:22:28,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2021-10-08 17:22:29,025 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 [2021-10-08 17:22:29,026 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:22:29,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:22:29,026 INFO L82 PathProgramCache]: Analyzing trace with hash 994274437, now seen corresponding path program 72 times [2021-10-08 17:22:29,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:22:29,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136204118] [2021-10-08 17:22:29,027 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:22:29,028 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:22:29,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:22:29,029 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) [2021-10-08 17:22:29,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-08 17:22:31,734 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:22:31,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:22:31,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:22:31,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:22:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:22:32,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:22:33,061 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:22:33,062 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:22:33,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136204118] [2021-10-08 17:22:33,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136204118] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:22:33,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:22:33,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:22:33,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080930795] [2021-10-08 17:22:33,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:22:33,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:22:33,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:22:33,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:22:33,064 INFO L87 Difference]: Start difference. First operand 17808 states and 89755 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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) [2021-10-08 17:22:37,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:22:37,491 INFO L93 Difference]: Finished difference Result 23020 states and 109398 transitions. [2021-10-08 17:22:37,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-08 17:22:37,492 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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) Word has length 22 [2021-10-08 17:22:37,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:22:37,587 INFO L225 Difference]: With dead ends: 23020 [2021-10-08 17:22:37,587 INFO L226 Difference]: Without dead ends: 23006 [2021-10-08 17:22:37,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 4082.8ms TimeCoverageRelationStatistics Valid=731, Invalid=2575, Unknown=0, NotChecked=0, Total=3306 [2021-10-08 17:22:37,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23006 states. [2021-10-08 17:22:38,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23006 to 17932. [2021-10-08 17:22:38,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17932 states, 17931 states have (on average 5.044392393062294) internal successors, (90451), 17931 states have internal predecessors, (90451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:22:38,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17932 states to 17932 states and 90451 transitions. [2021-10-08 17:22:38,416 INFO L78 Accepts]: Start accepts. Automaton has 17932 states and 90451 transitions. Word has length 22 [2021-10-08 17:22:38,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:22:38,416 INFO L470 AbstractCegarLoop]: Abstraction has 17932 states and 90451 transitions. [2021-10-08 17:22:38,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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) [2021-10-08 17:22:38,417 INFO L276 IsEmpty]: Start isEmpty. Operand 17932 states and 90451 transitions. [2021-10-08 17:22:38,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:22:38,470 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:22:38,470 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:22:38,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-10-08 17:22:38,671 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 [2021-10-08 17:22:38,671 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:22:38,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:22:38,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1490777907, now seen corresponding path program 73 times [2021-10-08 17:22:38,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:22:38,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334893460] [2021-10-08 17:22:38,674 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:22:38,674 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:22:38,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:22:38,676 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) [2021-10-08 17:22:38,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-08 17:22:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:22:41,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:22:41,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:22:41,854 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:22:41,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:22:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:22:42,624 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:22:42,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334893460] [2021-10-08 17:22:42,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334893460] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:22:42,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:22:42,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:22:42,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544926234] [2021-10-08 17:22:42,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:22:42,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:22:42,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:22:42,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:22:42,626 INFO L87 Difference]: Start difference. First operand 17932 states and 90451 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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) [2021-10-08 17:22:47,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:22:47,846 INFO L93 Difference]: Finished difference Result 23357 states and 111322 transitions. [2021-10-08 17:22:47,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-10-08 17:22:47,846 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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) Word has length 22 [2021-10-08 17:22:47,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:22:47,946 INFO L225 Difference]: With dead ends: 23357 [2021-10-08 17:22:47,947 INFO L226 Difference]: Without dead ends: 23350 [2021-10-08 17:22:47,947 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1307 ImplicationChecksByTransitivity, 4797.4ms TimeCoverageRelationStatistics Valid=1079, Invalid=3751, Unknown=0, NotChecked=0, Total=4830 [2021-10-08 17:22:47,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23350 states. [2021-10-08 17:22:48,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23350 to 18048. [2021-10-08 17:22:48,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18048 states, 18047 states have (on average 5.0500914279381615) internal successors, (91139), 18047 states have internal predecessors, (91139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:22:48,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18048 states to 18048 states and 91139 transitions. [2021-10-08 17:22:48,697 INFO L78 Accepts]: Start accepts. Automaton has 18048 states and 91139 transitions. Word has length 22 [2021-10-08 17:22:48,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:22:48,698 INFO L470 AbstractCegarLoop]: Abstraction has 18048 states and 91139 transitions. [2021-10-08 17:22:48,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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) [2021-10-08 17:22:48,698 INFO L276 IsEmpty]: Start isEmpty. Operand 18048 states and 91139 transitions. [2021-10-08 17:22:48,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 17:22:48,936 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:22:48,936 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:22:48,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-10-08 17:22:49,151 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 [2021-10-08 17:22:49,152 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:22:49,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:22:49,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1547854602, now seen corresponding path program 74 times [2021-10-08 17:22:49,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:22:49,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536652007] [2021-10-08 17:22:49,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:22:49,154 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:22:49,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:22:49,155 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) [2021-10-08 17:22:49,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-08 17:22:51,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:22:51,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:22:52,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:22:52,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:22:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 17:22:52,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:22:52,325 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 17:22:52,325 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:22:52,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536652007] [2021-10-08 17:22:52,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536652007] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:22:52,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:22:52,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 17:22:52,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611751421] [2021-10-08 17:22:52,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 17:22:52,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:22:52,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 17:22:52,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:22:52,327 INFO L87 Difference]: Start difference. First operand 18048 states and 91139 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2021-10-08 17:22:52,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:22:52,646 INFO L93 Difference]: Finished difference Result 19552 states and 93915 transitions. [2021-10-08 17:22:52,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:22:52,647 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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 23 [2021-10-08 17:22:52,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:22:52,729 INFO L225 Difference]: With dead ends: 19552 [2021-10-08 17:22:52,729 INFO L226 Difference]: Without dead ends: 19526 [2021-10-08 17:22:52,729 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 80.1ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:22:52,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19526 states. [2021-10-08 17:22:53,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19526 to 11396. [2021-10-08 17:22:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11396 states, 11395 states have (on average 4.742869679684072) internal successors, (54045), 11395 states have internal predecessors, (54045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:22:53,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11396 states to 11396 states and 54045 transitions. [2021-10-08 17:22:53,267 INFO L78 Accepts]: Start accepts. Automaton has 11396 states and 54045 transitions. Word has length 23 [2021-10-08 17:22:53,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:22:53,268 INFO L470 AbstractCegarLoop]: Abstraction has 11396 states and 54045 transitions. [2021-10-08 17:22:53,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2021-10-08 17:22:53,268 INFO L276 IsEmpty]: Start isEmpty. Operand 11396 states and 54045 transitions. [2021-10-08 17:22:53,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 17:22:53,300 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:22:53,300 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:22:53,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Ended with exit code 0 [2021-10-08 17:22:53,505 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 [2021-10-08 17:22:53,506 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:22:53,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:22:53,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1413703133, now seen corresponding path program 75 times [2021-10-08 17:22:53,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:22:53,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353979466] [2021-10-08 17:22:53,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:22:53,508 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:22:53,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:22:53,509 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) [2021-10-08 17:22:53,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-10-08 17:22:56,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:22:56,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:22:56,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:22:56,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:22:56,500 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 17:22:56,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:22:56,765 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 17:22:56,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:22:56,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353979466] [2021-10-08 17:22:56,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353979466] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:22:56,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:22:56,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 17:22:56,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33370105] [2021-10-08 17:22:56,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 17:22:56,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:22:56,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 17:22:56,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:22:56,768 INFO L87 Difference]: Start difference. First operand 11396 states and 54045 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 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) [2021-10-08 17:22:56,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:22:56,924 INFO L93 Difference]: Finished difference Result 12362 states and 55905 transitions. [2021-10-08 17:22:56,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:22:56,925 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 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) Word has length 23 [2021-10-08 17:22:56,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:22:56,972 INFO L225 Difference]: With dead ends: 12362 [2021-10-08 17:22:56,972 INFO L226 Difference]: Without dead ends: 12362 [2021-10-08 17:22:56,973 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 97.4ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:22:56,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12362 states. [2021-10-08 17:22:57,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12362 to 6632. [2021-10-08 17:22:57,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6632 states, 6631 states have (on average 4.562961845875433) internal successors, (30257), 6631 states have internal predecessors, (30257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:22:57,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6632 states to 6632 states and 30257 transitions. [2021-10-08 17:22:57,314 INFO L78 Accepts]: Start accepts. Automaton has 6632 states and 30257 transitions. Word has length 23 [2021-10-08 17:22:57,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:22:57,314 INFO L470 AbstractCegarLoop]: Abstraction has 6632 states and 30257 transitions. [2021-10-08 17:22:57,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 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) [2021-10-08 17:22:57,314 INFO L276 IsEmpty]: Start isEmpty. Operand 6632 states and 30257 transitions. [2021-10-08 17:22:57,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 17:22:57,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:22:57,330 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:22:57,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Ended with exit code 0 [2021-10-08 17:22:57,530 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 [2021-10-08 17:22:57,531 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:22:57,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:22:57,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1081883966, now seen corresponding path program 76 times [2021-10-08 17:22:57,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:22:57,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602378850] [2021-10-08 17:22:57,532 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:22:57,532 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:22:57,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:22:57,534 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) [2021-10-08 17:22:57,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-10-08 17:22:59,968 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:22:59,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:22:59,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:22:59,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:23:00,261 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 17:23:00,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:23:00,428 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 17:23:00,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:23:00,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602378850] [2021-10-08 17:23:00,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602378850] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:23:00,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:23:00,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 17:23:00,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151195662] [2021-10-08 17:23:00,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 17:23:00,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:23:00,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 17:23:00,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:23:00,430 INFO L87 Difference]: Start difference. First operand 6632 states and 30257 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:00,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:23:00,589 INFO L93 Difference]: Finished difference Result 6930 states and 30506 transitions. [2021-10-08 17:23:00,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:23:00,590 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 17:23:00,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:23:00,618 INFO L225 Difference]: With dead ends: 6930 [2021-10-08 17:23:00,618 INFO L226 Difference]: Without dead ends: 6930 [2021-10-08 17:23:00,618 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 121.2ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:23:00,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6930 states. [2021-10-08 17:23:00,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6930 to 4520. [2021-10-08 17:23:00,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4520 states, 4519 states have (on average 4.322195175923877) internal successors, (19532), 4519 states have internal predecessors, (19532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:00,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4520 states to 4520 states and 19532 transitions. [2021-10-08 17:23:00,766 INFO L78 Accepts]: Start accepts. Automaton has 4520 states and 19532 transitions. Word has length 23 [2021-10-08 17:23:00,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:23:00,766 INFO L470 AbstractCegarLoop]: Abstraction has 4520 states and 19532 transitions. [2021-10-08 17:23:00,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:00,766 INFO L276 IsEmpty]: Start isEmpty. Operand 4520 states and 19532 transitions. [2021-10-08 17:23:00,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 17:23:00,776 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:23:00,776 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:23:00,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2021-10-08 17:23:00,976 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 [2021-10-08 17:23:00,977 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:23:00,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:23:00,977 INFO L82 PathProgramCache]: Analyzing trace with hash 294997875, now seen corresponding path program 77 times [2021-10-08 17:23:00,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:23:00,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225856649] [2021-10-08 17:23:00,978 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:23:00,978 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:23:00,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:23:00,980 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) [2021-10-08 17:23:00,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-10-08 17:23:03,784 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 17:23:03,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:23:03,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:23:03,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:23:04,246 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:23:04,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:23:04,908 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:23:04,908 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:23:04,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225856649] [2021-10-08 17:23:04,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225856649] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:23:04,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:23:04,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-08 17:23:04,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473970458] [2021-10-08 17:23:04,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:23:04,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:23:04,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:23:04,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:23:04,910 INFO L87 Difference]: Start difference. First operand 4520 states and 19532 transitions. Second operand has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:08,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:23:08,161 INFO L93 Difference]: Finished difference Result 6040 states and 24455 transitions. [2021-10-08 17:23:08,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-08 17:23:08,161 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 17:23:08,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:23:08,179 INFO L225 Difference]: With dead ends: 6040 [2021-10-08 17:23:08,179 INFO L226 Difference]: Without dead ends: 5488 [2021-10-08 17:23:08,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 2913.7ms TimeCoverageRelationStatistics Valid=808, Invalid=4022, Unknown=0, NotChecked=0, Total=4830 [2021-10-08 17:23:08,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5488 states. [2021-10-08 17:23:08,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5488 to 4282. [2021-10-08 17:23:08,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4282 states, 4281 states have (on average 4.3088063536556875) internal successors, (18446), 4281 states have internal predecessors, (18446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:08,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4282 states to 4282 states and 18446 transitions. [2021-10-08 17:23:08,292 INFO L78 Accepts]: Start accepts. Automaton has 4282 states and 18446 transitions. Word has length 24 [2021-10-08 17:23:08,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:23:08,292 INFO L470 AbstractCegarLoop]: Abstraction has 4282 states and 18446 transitions. [2021-10-08 17:23:08,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:08,292 INFO L276 IsEmpty]: Start isEmpty. Operand 4282 states and 18446 transitions. [2021-10-08 17:23:08,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 17:23:08,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:23:08,302 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:23:08,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2021-10-08 17:23:08,502 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 [2021-10-08 17:23:08,502 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:23:08,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:23:08,503 INFO L82 PathProgramCache]: Analyzing trace with hash 705715961, now seen corresponding path program 78 times [2021-10-08 17:23:08,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:23:08,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89355316] [2021-10-08 17:23:08,504 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:23:08,504 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:23:08,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:23:08,506 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) [2021-10-08 17:23:08,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-10-08 17:23:11,325 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:23:11,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:23:11,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 17:23:11,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:23:12,050 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:23:12,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:23:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:23:12,939 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:23:12,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89355316] [2021-10-08 17:23:12,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89355316] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:23:12,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:23:12,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-08 17:23:12,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370499737] [2021-10-08 17:23:12,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:23:12,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:23:12,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:23:12,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:23:12,941 INFO L87 Difference]: Start difference. First operand 4282 states and 18446 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:15,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:23:15,532 INFO L93 Difference]: Finished difference Result 6607 states and 26726 transitions. [2021-10-08 17:23:15,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 17:23:15,533 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 17:23:15,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:23:15,555 INFO L225 Difference]: With dead ends: 6607 [2021-10-08 17:23:15,555 INFO L226 Difference]: Without dead ends: 6600 [2021-10-08 17:23:15,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 2412.0ms TimeCoverageRelationStatistics Valid=576, Invalid=1776, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 17:23:15,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6600 states. [2021-10-08 17:23:15,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6600 to 4524. [2021-10-08 17:23:15,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4524 states, 4523 states have (on average 4.317046208268848) internal successors, (19526), 4523 states have internal predecessors, (19526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:15,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4524 states to 4524 states and 19526 transitions. [2021-10-08 17:23:15,696 INFO L78 Accepts]: Start accepts. Automaton has 4524 states and 19526 transitions. Word has length 24 [2021-10-08 17:23:15,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:23:15,696 INFO L470 AbstractCegarLoop]: Abstraction has 4524 states and 19526 transitions. [2021-10-08 17:23:15,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:15,697 INFO L276 IsEmpty]: Start isEmpty. Operand 4524 states and 19526 transitions. [2021-10-08 17:23:15,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 17:23:15,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:23:15,707 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:23:15,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Forceful destruction successful, exit code 0 [2021-10-08 17:23:15,907 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 [2021-10-08 17:23:15,908 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:23:15,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:23:15,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1976002055, now seen corresponding path program 79 times [2021-10-08 17:23:15,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:23:15,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270802988] [2021-10-08 17:23:15,909 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:23:15,909 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:23:15,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:23:15,911 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) [2021-10-08 17:23:15,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2021-10-08 17:23:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:23:18,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 17:23:18,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:23:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:23:19,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:23:20,304 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:23:20,305 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:23:20,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270802988] [2021-10-08 17:23:20,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1270802988] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:23:20,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:23:20,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-08 17:23:20,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628862414] [2021-10-08 17:23:20,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:23:20,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:23:20,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:23:20,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:23:20,307 INFO L87 Difference]: Start difference. First operand 4524 states and 19526 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:23,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:23:23,912 INFO L93 Difference]: Finished difference Result 7347 states and 30280 transitions. [2021-10-08 17:23:23,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 17:23:23,912 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 17:23:23,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:23:23,936 INFO L225 Difference]: With dead ends: 7347 [2021-10-08 17:23:23,936 INFO L226 Difference]: Without dead ends: 7340 [2021-10-08 17:23:23,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 3248.0ms TimeCoverageRelationStatistics Valid=762, Invalid=2544, Unknown=0, NotChecked=0, Total=3306 [2021-10-08 17:23:23,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7340 states. [2021-10-08 17:23:24,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7340 to 4724. [2021-10-08 17:23:24,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4724 states, 4723 states have (on average 4.348719034511963) internal successors, (20539), 4723 states have internal predecessors, (20539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:24,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4724 states to 4724 states and 20539 transitions. [2021-10-08 17:23:24,112 INFO L78 Accepts]: Start accepts. Automaton has 4724 states and 20539 transitions. Word has length 24 [2021-10-08 17:23:24,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:23:24,113 INFO L470 AbstractCegarLoop]: Abstraction has 4724 states and 20539 transitions. [2021-10-08 17:23:24,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:24,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4724 states and 20539 transitions. [2021-10-08 17:23:24,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 17:23:24,123 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:23:24,123 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:23:24,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Forceful destruction successful, exit code 0 [2021-10-08 17:23:24,323 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 [2021-10-08 17:23:24,324 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:23:24,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:23:24,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1429169119, now seen corresponding path program 80 times [2021-10-08 17:23:24,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:23:24,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027364585] [2021-10-08 17:23:24,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:23:24,326 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:23:24,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:23:24,327 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) [2021-10-08 17:23:24,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2021-10-08 17:23:27,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:23:27,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:23:27,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 17:23:27,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:23:27,919 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:23:27,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:23:28,756 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:23:28,756 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:23:28,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027364585] [2021-10-08 17:23:28,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027364585] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:23:28,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:23:28,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-08 17:23:28,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955833904] [2021-10-08 17:23:28,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:23:28,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:23:28,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:23:28,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:23:28,758 INFO L87 Difference]: Start difference. First operand 4724 states and 20539 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:32,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:23:32,925 INFO L93 Difference]: Finished difference Result 7285 states and 29540 transitions. [2021-10-08 17:23:32,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-08 17:23:32,926 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 17:23:32,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:23:32,947 INFO L225 Difference]: With dead ends: 7285 [2021-10-08 17:23:32,947 INFO L226 Difference]: Without dead ends: 7278 [2021-10-08 17:23:32,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 3788.9ms TimeCoverageRelationStatistics Valid=945, Invalid=3345, Unknown=0, NotChecked=0, Total=4290 [2021-10-08 17:23:32,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7278 states. [2021-10-08 17:23:33,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7278 to 4810. [2021-10-08 17:23:33,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 4.372634643377001) internal successors, (21028), 4809 states have internal predecessors, (21028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:33,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 21028 transitions. [2021-10-08 17:23:33,094 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 21028 transitions. Word has length 24 [2021-10-08 17:23:33,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:23:33,094 INFO L470 AbstractCegarLoop]: Abstraction has 4810 states and 21028 transitions. [2021-10-08 17:23:33,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:33,095 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 21028 transitions. [2021-10-08 17:23:33,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 17:23:33,106 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:23:33,106 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:23:33,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Forceful destruction successful, exit code 0 [2021-10-08 17:23:33,306 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 [2021-10-08 17:23:33,307 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:23:33,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:23:33,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1825291597, now seen corresponding path program 81 times [2021-10-08 17:23:33,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:23:33,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916323650] [2021-10-08 17:23:33,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:23:33,309 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:23:33,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:23:33,310 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) [2021-10-08 17:23:33,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2021-10-08 17:23:36,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:23:36,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:23:36,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 17:23:36,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:23:36,960 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:23:36,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:23:37,813 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:23:37,814 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:23:37,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916323650] [2021-10-08 17:23:37,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916323650] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:23:37,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:23:37,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-08 17:23:37,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822167765] [2021-10-08 17:23:37,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:23:37,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:23:37,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:23:37,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:23:37,815 INFO L87 Difference]: Start difference. First operand 4810 states and 21028 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:42,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:23:42,394 INFO L93 Difference]: Finished difference Result 7971 states and 32019 transitions. [2021-10-08 17:23:42,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-08 17:23:42,395 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 17:23:42,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:23:42,419 INFO L225 Difference]: With dead ends: 7971 [2021-10-08 17:23:42,419 INFO L226 Difference]: Without dead ends: 7964 [2021-10-08 17:23:42,420 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 4388.2ms TimeCoverageRelationStatistics Valid=1103, Invalid=3589, Unknown=0, NotChecked=0, Total=4692 [2021-10-08 17:23:42,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7964 states. [2021-10-08 17:23:42,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7964 to 4974. [2021-10-08 17:23:42,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4974 states, 4973 states have (on average 4.372813191232656) internal successors, (21746), 4973 states have internal predecessors, (21746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:42,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4974 states to 4974 states and 21746 transitions. [2021-10-08 17:23:42,668 INFO L78 Accepts]: Start accepts. Automaton has 4974 states and 21746 transitions. Word has length 24 [2021-10-08 17:23:42,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:23:42,668 INFO L470 AbstractCegarLoop]: Abstraction has 4974 states and 21746 transitions. [2021-10-08 17:23:42,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:42,668 INFO L276 IsEmpty]: Start isEmpty. Operand 4974 states and 21746 transitions. [2021-10-08 17:23:42,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 17:23:42,679 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:23:42,679 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:23:42,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2021-10-08 17:23:42,879 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 [2021-10-08 17:23:42,880 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:23:42,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:23:42,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1996004217, now seen corresponding path program 82 times [2021-10-08 17:23:42,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:23:42,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49170073] [2021-10-08 17:23:42,882 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:23:42,882 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:23:42,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:23:42,886 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) [2021-10-08 17:23:42,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2021-10-08 17:23:45,662 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:23:45,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:23:45,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 17:23:45,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:23:46,365 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:23:46,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:23:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:23:47,112 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:23:47,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49170073] [2021-10-08 17:23:47,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49170073] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:23:47,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:23:47,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-08 17:23:47,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336337133] [2021-10-08 17:23:47,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:23:47,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:23:47,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:23:47,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:23:47,114 INFO L87 Difference]: Start difference. First operand 4974 states and 21746 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:50,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:23:50,835 INFO L93 Difference]: Finished difference Result 7371 states and 29494 transitions. [2021-10-08 17:23:50,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-08 17:23:50,835 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 17:23:50,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:23:50,859 INFO L225 Difference]: With dead ends: 7371 [2021-10-08 17:23:50,859 INFO L226 Difference]: Without dead ends: 7268 [2021-10-08 17:23:50,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 3524.0ms TimeCoverageRelationStatistics Valid=884, Invalid=3022, Unknown=0, NotChecked=0, Total=3906 [2021-10-08 17:23:50,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7268 states. [2021-10-08 17:23:50,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7268 to 5014. [2021-10-08 17:23:50,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5014 states, 5013 states have (on average 4.380809894274885) internal successors, (21961), 5013 states have internal predecessors, (21961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:51,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 21961 transitions. [2021-10-08 17:23:51,004 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 21961 transitions. Word has length 24 [2021-10-08 17:23:51,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:23:51,004 INFO L470 AbstractCegarLoop]: Abstraction has 5014 states and 21961 transitions. [2021-10-08 17:23:51,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:51,004 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 21961 transitions. [2021-10-08 17:23:51,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 17:23:51,014 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:23:51,015 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:23:51,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2021-10-08 17:23:51,215 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 [2021-10-08 17:23:51,215 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:23:51,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:23:51,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1722047369, now seen corresponding path program 83 times [2021-10-08 17:23:51,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:23:51,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127769985] [2021-10-08 17:23:51,216 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:23:51,216 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:23:51,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:23:51,217 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) [2021-10-08 17:23:51,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2021-10-08 17:23:54,199 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:23:54,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:23:54,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 17:23:54,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:23:54,829 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:23:54,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:23:55,809 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:23:55,809 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:23:55,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127769985] [2021-10-08 17:23:55,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127769985] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:23:55,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:23:55,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-08 17:23:55,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627548403] [2021-10-08 17:23:55,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:23:55,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:23:55,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:23:55,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:23:55,811 INFO L87 Difference]: Start difference. First operand 5014 states and 21961 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:58,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:23:58,937 INFO L93 Difference]: Finished difference Result 8851 states and 35310 transitions. [2021-10-08 17:23:58,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 17:23:58,938 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 17:23:58,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:23:58,966 INFO L225 Difference]: With dead ends: 8851 [2021-10-08 17:23:58,966 INFO L226 Difference]: Without dead ends: 8764 [2021-10-08 17:23:58,966 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 2937.8ms TimeCoverageRelationStatistics Valid=584, Invalid=1866, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 17:23:58,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8764 states. [2021-10-08 17:23:59,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8764 to 5358. [2021-10-08 17:23:59,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5358 states, 5357 states have (on average 4.373903304088109) internal successors, (23431), 5357 states have internal predecessors, (23431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:59,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5358 states to 5358 states and 23431 transitions. [2021-10-08 17:23:59,140 INFO L78 Accepts]: Start accepts. Automaton has 5358 states and 23431 transitions. Word has length 24 [2021-10-08 17:23:59,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:23:59,140 INFO L470 AbstractCegarLoop]: Abstraction has 5358 states and 23431 transitions. [2021-10-08 17:23:59,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:59,140 INFO L276 IsEmpty]: Start isEmpty. Operand 5358 states and 23431 transitions. [2021-10-08 17:23:59,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 17:23:59,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:23:59,152 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:23:59,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Ended with exit code 0 [2021-10-08 17:23:59,352 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 [2021-10-08 17:23:59,353 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:23:59,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:23:59,353 INFO L82 PathProgramCache]: Analyzing trace with hash -270732803, now seen corresponding path program 84 times [2021-10-08 17:23:59,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:23:59,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243572991] [2021-10-08 17:23:59,354 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:23:59,354 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:23:59,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:23:59,356 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) [2021-10-08 17:23:59,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2021-10-08 17:24:02,434 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:24:02,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:24:02,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 17:24:02,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:24:03,129 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:24:03,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:24:03,963 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:24:03,964 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:24:03,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243572991] [2021-10-08 17:24:03,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243572991] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:24:03,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:24:03,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-08 17:24:03,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015138218] [2021-10-08 17:24:03,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:24:03,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:24:03,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:24:03,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:24:03,966 INFO L87 Difference]: Start difference. First operand 5358 states and 23431 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:24:08,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:24:08,416 INFO L93 Difference]: Finished difference Result 10505 states and 40701 transitions. [2021-10-08 17:24:08,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-08 17:24:08,417 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 17:24:08,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:24:08,450 INFO L225 Difference]: With dead ends: 10505 [2021-10-08 17:24:08,451 INFO L226 Difference]: Without dead ends: 10498 [2021-10-08 17:24:08,451 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1071 ImplicationChecksByTransitivity, 4381.5ms TimeCoverageRelationStatistics Valid=995, Invalid=3295, Unknown=0, NotChecked=0, Total=4290 [2021-10-08 17:24:08,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10498 states. [2021-10-08 17:24:08,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10498 to 5498. [2021-10-08 17:24:08,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5498 states, 5497 states have (on average 4.38930325632163) internal successors, (24128), 5497 states have internal predecessors, (24128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:24:08,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5498 states to 5498 states and 24128 transitions. [2021-10-08 17:24:08,663 INFO L78 Accepts]: Start accepts. Automaton has 5498 states and 24128 transitions. Word has length 24 [2021-10-08 17:24:08,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:24:08,663 INFO L470 AbstractCegarLoop]: Abstraction has 5498 states and 24128 transitions. [2021-10-08 17:24:08,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:24:08,664 INFO L276 IsEmpty]: Start isEmpty. Operand 5498 states and 24128 transitions. [2021-10-08 17:24:08,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 17:24:08,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:24:08,676 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:24:08,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Forceful destruction successful, exit code 0 [2021-10-08 17:24:08,876 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 [2021-10-08 17:24:08,877 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:24:08,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:24:08,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1695867035, now seen corresponding path program 85 times [2021-10-08 17:24:08,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:24:08,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565110910] [2021-10-08 17:24:08,878 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:24:08,879 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:24:08,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:24:08,880 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) [2021-10-08 17:24:08,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2021-10-08 17:24:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:24:11,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 17:24:11,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:24:12,517 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:24:12,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:24:13,482 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:24:13,482 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:24:13,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565110910] [2021-10-08 17:24:13,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565110910] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:24:13,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:24:13,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-08 17:24:13,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269612857] [2021-10-08 17:24:13,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:24:13,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:24:13,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:24:13,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:24:13,484 INFO L87 Difference]: Start difference. First operand 5498 states and 24128 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:24:17,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:24:17,664 INFO L93 Difference]: Finished difference Result 9795 states and 39341 transitions. [2021-10-08 17:24:17,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-08 17:24:17,665 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 17:24:17,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:24:17,698 INFO L225 Difference]: With dead ends: 9795 [2021-10-08 17:24:17,699 INFO L226 Difference]: Without dead ends: 9788 [2021-10-08 17:24:17,699 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 4119.4ms TimeCoverageRelationStatistics Valid=783, Invalid=2523, Unknown=0, NotChecked=0, Total=3306 [2021-10-08 17:24:17,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9788 states. [2021-10-08 17:24:17,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9788 to 5626. [2021-10-08 17:24:17,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5626 states, 5625 states have (on average 4.416355555555556) internal successors, (24842), 5625 states have internal predecessors, (24842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:24:17,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5626 states to 5626 states and 24842 transitions. [2021-10-08 17:24:17,902 INFO L78 Accepts]: Start accepts. Automaton has 5626 states and 24842 transitions. Word has length 24 [2021-10-08 17:24:17,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:24:17,902 INFO L470 AbstractCegarLoop]: Abstraction has 5626 states and 24842 transitions. [2021-10-08 17:24:17,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:24:17,902 INFO L276 IsEmpty]: Start isEmpty. Operand 5626 states and 24842 transitions. [2021-10-08 17:24:17,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 17:24:17,914 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:24:17,914 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:24:17,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Forceful destruction successful, exit code 0 [2021-10-08 17:24:18,115 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 [2021-10-08 17:24:18,116 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:24:18,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:24:18,117 INFO L82 PathProgramCache]: Analyzing trace with hash 173627947, now seen corresponding path program 86 times [2021-10-08 17:24:18,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:24:18,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124103739] [2021-10-08 17:24:18,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:24:18,119 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:24:18,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:24:18,120 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) [2021-10-08 17:24:18,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2021-10-08 17:24:21,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:24:21,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:24:21,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 17:24:21,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:24:22,066 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:24:22,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:24:22,938 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:24:22,939 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:24:22,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124103739] [2021-10-08 17:24:22,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [124103739] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:24:22,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:24:22,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 17:24:22,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168616392] [2021-10-08 17:24:22,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 17:24:22,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:24:22,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 17:24:22,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2021-10-08 17:24:22,941 INFO L87 Difference]: Start difference. First operand 5626 states and 24842 transitions. Second operand has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:24:25,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:24:25,577 INFO L93 Difference]: Finished difference Result 8870 states and 35965 transitions. [2021-10-08 17:24:25,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 17:24:25,578 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 17:24:25,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:24:25,605 INFO L225 Difference]: With dead ends: 8870 [2021-10-08 17:24:25,606 INFO L226 Difference]: Without dead ends: 8856 [2021-10-08 17:24:25,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 2619.1ms TimeCoverageRelationStatistics Valid=549, Invalid=1343, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 17:24:25,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8856 states. [2021-10-08 17:24:25,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8856 to 5820. [2021-10-08 17:24:25,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5820 states, 5819 states have (on average 4.416566420347139) internal successors, (25700), 5819 states have internal predecessors, (25700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:24:25,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5820 states to 5820 states and 25700 transitions. [2021-10-08 17:24:25,846 INFO L78 Accepts]: Start accepts. Automaton has 5820 states and 25700 transitions. Word has length 24 [2021-10-08 17:24:25,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:24:25,846 INFO L470 AbstractCegarLoop]: Abstraction has 5820 states and 25700 transitions. [2021-10-08 17:24:25,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:24:25,851 INFO L276 IsEmpty]: Start isEmpty. Operand 5820 states and 25700 transitions. [2021-10-08 17:24:25,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 17:24:25,870 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:24:25,870 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:24:25,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Forceful destruction successful, exit code 0 [2021-10-08 17:24:26,083 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 [2021-10-08 17:24:26,084 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:24:26,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:24:26,085 INFO L82 PathProgramCache]: Analyzing trace with hash 549955667, now seen corresponding path program 87 times [2021-10-08 17:24:26,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:24:26,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141442686] [2021-10-08 17:24:26,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:24:26,086 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:24:26,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:24:26,087 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) [2021-10-08 17:24:26,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2021-10-08 17:24:29,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 17:24:29,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:24:29,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 17:24:29,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:24:30,118 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:24:30,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:24:30,964 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:24:30,964 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:24:30,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141442686] [2021-10-08 17:24:30,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141442686] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:24:30,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:24:30,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 17:24:30,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357634859] [2021-10-08 17:24:30,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 17:24:30,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:24:30,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 17:24:30,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2021-10-08 17:24:30,966 INFO L87 Difference]: Start difference. First operand 5820 states and 25700 transitions. Second operand has 21 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:24:33,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:24:33,951 INFO L93 Difference]: Finished difference Result 8890 states and 36119 transitions. [2021-10-08 17:24:33,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 17:24:33,952 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 17:24:33,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:24:33,981 INFO L225 Difference]: With dead ends: 8890 [2021-10-08 17:24:33,981 INFO L226 Difference]: Without dead ends: 8876 [2021-10-08 17:24:33,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2944.7ms TimeCoverageRelationStatistics Valid=575, Invalid=1405, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 17:24:33,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8876 states. [2021-10-08 17:24:34,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8876 to 5840. [2021-10-08 17:24:34,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5840 states, 5839 states have (on average 4.420277444767939) internal successors, (25810), 5839 states have internal predecessors, (25810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:24:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5840 states to 5840 states and 25810 transitions. [2021-10-08 17:24:34,178 INFO L78 Accepts]: Start accepts. Automaton has 5840 states and 25810 transitions. Word has length 24 [2021-10-08 17:24:34,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:24:34,179 INFO L470 AbstractCegarLoop]: Abstraction has 5840 states and 25810 transitions. [2021-10-08 17:24:34,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:24:34,179 INFO L276 IsEmpty]: Start isEmpty. Operand 5840 states and 25810 transitions. [2021-10-08 17:24:34,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 17:24:34,193 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:24:34,193 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:24:34,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Forceful destruction successful, exit code 0 [2021-10-08 17:24:34,393 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 [2021-10-08 17:24:34,394 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:24:34,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:24:34,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1828597593, now seen corresponding path program 88 times [2021-10-08 17:24:34,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:24:34,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322100792] [2021-10-08 17:24:34,395 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:24:34,395 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:24:34,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:24:34,397 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) [2021-10-08 17:24:34,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2021-10-08 17:24:37,498 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:24:37,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:24:37,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 17:24:37,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:24:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:24:38,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:24:39,095 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:24:39,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:24:39,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322100792] [2021-10-08 17:24:39,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322100792] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:24:39,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:24:39,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 18 [2021-10-08 17:24:39,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812730685] [2021-10-08 17:24:39,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:24:39,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:24:39,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:24:39,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:24:39,096 INFO L87 Difference]: Start difference. First operand 5840 states and 25810 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:24:44,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:24:44,526 INFO L93 Difference]: Finished difference Result 9296 states and 37223 transitions. [2021-10-08 17:24:44,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-08 17:24:44,527 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 17:24:44,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:24:44,555 INFO L225 Difference]: With dead ends: 9296 [2021-10-08 17:24:44,555 INFO L226 Difference]: Without dead ends: 9234 [2021-10-08 17:24:44,556 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 5098.5ms TimeCoverageRelationStatistics Valid=846, Invalid=2936, Unknown=0, NotChecked=0, Total=3782 [2021-10-08 17:24:44,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9234 states. [2021-10-08 17:24:44,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9234 to 5934. [2021-10-08 17:24:44,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5934 states, 5933 states have (on average 4.417663913703017) internal successors, (26210), 5933 states have internal predecessors, (26210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:24:44,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5934 states to 5934 states and 26210 transitions. [2021-10-08 17:24:44,743 INFO L78 Accepts]: Start accepts. Automaton has 5934 states and 26210 transitions. Word has length 24 [2021-10-08 17:24:44,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:24:44,743 INFO L470 AbstractCegarLoop]: Abstraction has 5934 states and 26210 transitions. [2021-10-08 17:24:44,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:24:44,744 INFO L276 IsEmpty]: Start isEmpty. Operand 5934 states and 26210 transitions. [2021-10-08 17:24:44,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 17:24:44,758 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:24:44,758 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:24:44,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Forceful destruction successful, exit code 0 [2021-10-08 17:24:44,958 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 [2021-10-08 17:24:44,959 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:24:44,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:24:44,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1417551883, now seen corresponding path program 89 times [2021-10-08 17:24:44,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:24:44,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864030812] [2021-10-08 17:24:44,960 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:24:44,960 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:24:44,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:24:44,961 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) [2021-10-08 17:24:44,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2021-10-08 17:24:48,315 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:24:48,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:24:48,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 17:24:48,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:24:49,004 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:24:49,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:24:49,916 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:24:49,916 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:24:49,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864030812] [2021-10-08 17:24:49,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864030812] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:24:49,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:24:49,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2021-10-08 17:24:49,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677427201] [2021-10-08 17:24:49,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 17:24:49,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:24:49,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 17:24:49,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2021-10-08 17:24:49,919 INFO L87 Difference]: Start difference. First operand 5934 states and 26210 transitions. Second operand has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:24:55,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:24:55,049 INFO L93 Difference]: Finished difference Result 10363 states and 40943 transitions. [2021-10-08 17:24:55,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-08 17:24:55,050 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 17:24:55,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:24:55,082 INFO L225 Difference]: With dead ends: 10363 [2021-10-08 17:24:55,082 INFO L226 Difference]: Without dead ends: 10334 [2021-10-08 17:24:55,083 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1014 ImplicationChecksByTransitivity, 4752.8ms TimeCoverageRelationStatistics Valid=949, Invalid=3211, Unknown=0, NotChecked=0, Total=4160 [2021-10-08 17:24:55,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10334 states. [2021-10-08 17:24:55,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10334 to 5984. [2021-10-08 17:24:55,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5984 states, 5983 states have (on average 4.415009192712686) internal successors, (26415), 5983 states have internal predecessors, (26415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:24:55,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5984 states to 5984 states and 26415 transitions. [2021-10-08 17:24:55,309 INFO L78 Accepts]: Start accepts. Automaton has 5984 states and 26415 transitions. Word has length 24 [2021-10-08 17:24:55,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:24:55,309 INFO L470 AbstractCegarLoop]: Abstraction has 5984 states and 26415 transitions. [2021-10-08 17:24:55,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:24:55,309 INFO L276 IsEmpty]: Start isEmpty. Operand 5984 states and 26415 transitions. [2021-10-08 17:24:55,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 17:24:55,323 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:24:55,323 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:24:55,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (102)] Forceful destruction successful, exit code 0 [2021-10-08 17:24:55,524 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 [2021-10-08 17:24:55,524 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:24:55,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:24:55,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1392161771, now seen corresponding path program 90 times [2021-10-08 17:24:55,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:24:55,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62165615] [2021-10-08 17:24:55,526 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:24:55,526 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:24:55,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:24:55,528 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) [2021-10-08 17:24:55,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2021-10-08 17:24:59,014 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 17:24:59,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:24:59,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 17:24:59,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:24:59,590 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:24:59,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:25:00,490 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:25:00,490 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:25:00,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62165615] [2021-10-08 17:25:00,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62165615] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:25:00,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:25:00,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 18 [2021-10-08 17:25:00,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629954110] [2021-10-08 17:25:00,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:25:00,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:25:00,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:25:00,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:25:00,492 INFO L87 Difference]: Start difference. First operand 5984 states and 26415 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:25:04,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:25:04,875 INFO L93 Difference]: Finished difference Result 9903 states and 40050 transitions. [2021-10-08 17:25:04,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-08 17:25:04,875 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 17:25:04,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:25:04,909 INFO L225 Difference]: With dead ends: 9903 [2021-10-08 17:25:04,909 INFO L226 Difference]: Without dead ends: 9896 [2021-10-08 17:25:04,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 4041.1ms TimeCoverageRelationStatistics Valid=758, Invalid=2212, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 17:25:04,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9896 states. [2021-10-08 17:25:05,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9896 to 6070. [2021-10-08 17:25:05,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6070 states, 6069 states have (on average 4.402702257373537) internal successors, (26720), 6069 states have internal predecessors, (26720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:25:05,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6070 states to 6070 states and 26720 transitions. [2021-10-08 17:25:05,112 INFO L78 Accepts]: Start accepts. Automaton has 6070 states and 26720 transitions. Word has length 24 [2021-10-08 17:25:05,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:25:05,112 INFO L470 AbstractCegarLoop]: Abstraction has 6070 states and 26720 transitions. [2021-10-08 17:25:05,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:25:05,112 INFO L276 IsEmpty]: Start isEmpty. Operand 6070 states and 26720 transitions. [2021-10-08 17:25:05,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 17:25:05,168 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:25:05,168 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:25:05,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (103)] Forceful destruction successful, exit code 0 [2021-10-08 17:25:05,381 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 [2021-10-08 17:25:05,381 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:25:05,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:25:05,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1768489491, now seen corresponding path program 91 times [2021-10-08 17:25:05,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:25:05,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968903550] [2021-10-08 17:25:05,383 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:25:05,383 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:25:05,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:25:05,384 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) [2021-10-08 17:25:05,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (104)] Waiting until timeout for monitored process [2021-10-08 17:25:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:25:08,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 17:25:08,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:25:09,347 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:25:09,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:25:10,327 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:25:10,327 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:25:10,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968903550] [2021-10-08 17:25:10,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968903550] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:25:10,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:25:10,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 18 [2021-10-08 17:25:10,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984855634] [2021-10-08 17:25:10,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:25:10,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:25:10,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:25:10,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:25:10,329 INFO L87 Difference]: Start difference. First operand 6070 states and 26720 transitions. Second operand has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:25:14,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:25:14,036 INFO L93 Difference]: Finished difference Result 9640 states and 39211 transitions. [2021-10-08 17:25:14,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 17:25:14,037 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 17:25:14,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:25:14,067 INFO L225 Difference]: With dead ends: 9640 [2021-10-08 17:25:14,067 INFO L226 Difference]: Without dead ends: 9626 [2021-10-08 17:25:14,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 3601.2ms TimeCoverageRelationStatistics Valid=708, Invalid=1944, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 17:25:14,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9626 states. [2021-10-08 17:25:14,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9626 to 6028. [2021-10-08 17:25:14,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6028 states, 6027 states have (on average 4.403019744483159) internal successors, (26537), 6027 states have internal predecessors, (26537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:25:14,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6028 states to 6028 states and 26537 transitions. [2021-10-08 17:25:14,325 INFO L78 Accepts]: Start accepts. Automaton has 6028 states and 26537 transitions. Word has length 24 [2021-10-08 17:25:14,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:25:14,325 INFO L470 AbstractCegarLoop]: Abstraction has 6028 states and 26537 transitions. [2021-10-08 17:25:14,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:25:14,326 INFO L276 IsEmpty]: Start isEmpty. Operand 6028 states and 26537 transitions. [2021-10-08 17:25:14,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 17:25:14,338 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:25:14,338 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:25:14,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (104)] Forceful destruction successful, exit code 0 [2021-10-08 17:25:14,543 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 [2021-10-08 17:25:14,544 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:25:14,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:25:14,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1746637599, now seen corresponding path program 92 times [2021-10-08 17:25:14,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:25:14,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682893809] [2021-10-08 17:25:14,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:25:14,545 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:25:14,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:25:14,547 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) [2021-10-08 17:25:14,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (105)] Waiting until timeout for monitored process [2021-10-08 17:25:18,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:25:18,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:25:18,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 17:25:18,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:25:18,781 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:25:18,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:25:19,793 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:25:19,794 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:25:19,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682893809] [2021-10-08 17:25:19,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682893809] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:25:19,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:25:19,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-08 17:25:19,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670276130] [2021-10-08 17:25:19,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:25:19,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:25:19,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:25:19,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:25:19,796 INFO L87 Difference]: Start difference. First operand 6028 states and 26537 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:25:23,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:25:23,663 INFO L93 Difference]: Finished difference Result 9239 states and 37426 transitions. [2021-10-08 17:25:23,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 17:25:23,663 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 17:25:23,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:25:23,694 INFO L225 Difference]: With dead ends: 9239 [2021-10-08 17:25:23,694 INFO L226 Difference]: Without dead ends: 9196 [2021-10-08 17:25:23,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 3795.7ms TimeCoverageRelationStatistics Valid=575, Invalid=1681, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 17:25:23,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9196 states. [2021-10-08 17:25:23,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9196 to 6086. [2021-10-08 17:25:23,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6086 states, 6085 states have (on average 4.409860312243221) internal successors, (26834), 6085 states have internal predecessors, (26834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:25:23,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6086 states to 6086 states and 26834 transitions. [2021-10-08 17:25:23,958 INFO L78 Accepts]: Start accepts. Automaton has 6086 states and 26834 transitions. Word has length 24 [2021-10-08 17:25:23,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:25:23,958 INFO L470 AbstractCegarLoop]: Abstraction has 6086 states and 26834 transitions. [2021-10-08 17:25:23,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:25:23,959 INFO L276 IsEmpty]: Start isEmpty. Operand 6086 states and 26834 transitions. [2021-10-08 17:25:23,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 17:25:23,972 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:25:23,972 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:25:23,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (105)] Forceful destruction successful, exit code 0 [2021-10-08 17:25:24,172 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 [2021-10-08 17:25:24,173 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:25:24,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:25:24,174 INFO L82 PathProgramCache]: Analyzing trace with hash -572855365, now seen corresponding path program 93 times [2021-10-08 17:25:24,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:25:24,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201268836] [2021-10-08 17:25:24,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:25:24,175 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:25:24,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:25:24,177 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) [2021-10-08 17:25:24,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (106)] Waiting until timeout for monitored process [2021-10-08 17:25:27,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:25:27,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:25:27,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 17:25:27,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:25:28,126 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:25:28,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:25:29,105 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:25:29,105 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:25:29,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201268836] [2021-10-08 17:25:29,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201268836] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:25:29,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:25:29,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-08 17:25:29,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208095952] [2021-10-08 17:25:29,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:25:29,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:25:29,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:25:29,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:25:29,107 INFO L87 Difference]: Start difference. First operand 6086 states and 26834 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:25:33,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:25:33,127 INFO L93 Difference]: Finished difference Result 9179 states and 37558 transitions. [2021-10-08 17:25:33,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-08 17:25:33,128 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 17:25:33,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:25:33,157 INFO L225 Difference]: With dead ends: 9179 [2021-10-08 17:25:33,157 INFO L226 Difference]: Without dead ends: 9134 [2021-10-08 17:25:33,157 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 3794.2ms TimeCoverageRelationStatistics Valid=809, Invalid=2731, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 17:25:33,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9134 states. [2021-10-08 17:25:33,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9134 to 6176. [2021-10-08 17:25:33,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6176 states, 6175 states have (on average 4.409068825910931) internal successors, (27226), 6175 states have internal predecessors, (27226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:25:33,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6176 states to 6176 states and 27226 transitions. [2021-10-08 17:25:33,400 INFO L78 Accepts]: Start accepts. Automaton has 6176 states and 27226 transitions. Word has length 24 [2021-10-08 17:25:33,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:25:33,400 INFO L470 AbstractCegarLoop]: Abstraction has 6176 states and 27226 transitions. [2021-10-08 17:25:33,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:25:33,400 INFO L276 IsEmpty]: Start isEmpty. Operand 6176 states and 27226 transitions. [2021-10-08 17:25:33,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 17:25:33,414 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:25:33,414 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:25:33,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (106)] Forceful destruction successful, exit code 0 [2021-10-08 17:25:33,615 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 [2021-10-08 17:25:33,615 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:25:33,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:25:33,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1295600933, now seen corresponding path program 94 times [2021-10-08 17:25:33,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:25:33,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346470901] [2021-10-08 17:25:33,618 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:25:33,618 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:25:33,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:25:33,619 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) [2021-10-08 17:25:33,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (107)] Waiting until timeout for monitored process [2021-10-08 17:25:36,920 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:25:36,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:25:36,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 17:25:36,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:25:37,476 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:25:37,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:25:38,508 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:25:38,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:25:38,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346470901] [2021-10-08 17:25:38,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346470901] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:25:38,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:25:38,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 18 [2021-10-08 17:25:38,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511758623] [2021-10-08 17:25:38,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:25:38,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:25:38,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:25:38,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:25:38,511 INFO L87 Difference]: Start difference. First operand 6176 states and 27226 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:25:42,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:25:42,848 INFO L93 Difference]: Finished difference Result 9602 states and 38640 transitions. [2021-10-08 17:25:42,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-08 17:25:42,849 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 17:25:42,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:25:42,882 INFO L225 Difference]: With dead ends: 9602 [2021-10-08 17:25:42,882 INFO L226 Difference]: Without dead ends: 9540 [2021-10-08 17:25:42,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 4025.9ms TimeCoverageRelationStatistics Valid=739, Invalid=2453, Unknown=0, NotChecked=0, Total=3192 [2021-10-08 17:25:42,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9540 states. [2021-10-08 17:25:43,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9540 to 6232. [2021-10-08 17:25:43,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6232 states, 6231 states have (on average 4.409725565719788) internal successors, (27477), 6231 states have internal predecessors, (27477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:25:43,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6232 states to 6232 states and 27477 transitions. [2021-10-08 17:25:43,163 INFO L78 Accepts]: Start accepts. Automaton has 6232 states and 27477 transitions. Word has length 24 [2021-10-08 17:25:43,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:25:43,164 INFO L470 AbstractCegarLoop]: Abstraction has 6232 states and 27477 transitions. [2021-10-08 17:25:43,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:25:43,164 INFO L276 IsEmpty]: Start isEmpty. Operand 6232 states and 27477 transitions. [2021-10-08 17:25:43,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 17:25:43,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:25:43,178 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:25:43,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (107)] Forceful destruction successful, exit code 0 [2021-10-08 17:25:43,379 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 [2021-10-08 17:25:43,379 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:25:43,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:25:43,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1950548543, now seen corresponding path program 95 times [2021-10-08 17:25:43,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:25:43,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617025314] [2021-10-08 17:25:43,382 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:25:43,382 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:25:43,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:25:43,384 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) [2021-10-08 17:25:43,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (108)] Waiting until timeout for monitored process [2021-10-08 17:25:46,712 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:25:46,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:25:46,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 17:25:46,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:25:47,340 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:25:47,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:25:48,283 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:25:48,283 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:25:48,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617025314] [2021-10-08 17:25:48,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617025314] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:25:48,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:25:48,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2021-10-08 17:25:48,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810500687] [2021-10-08 17:25:48,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 17:25:48,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:25:48,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 17:25:48,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-10-08 17:25:48,285 INFO L87 Difference]: Start difference. First operand 6232 states and 27477 transitions. Second operand has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:25:52,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:25:52,390 INFO L93 Difference]: Finished difference Result 10944 states and 43514 transitions. [2021-10-08 17:25:52,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-08 17:25:52,391 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 17:25:52,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:25:52,426 INFO L225 Difference]: With dead ends: 10944 [2021-10-08 17:25:52,426 INFO L226 Difference]: Without dead ends: 10930 [2021-10-08 17:25:52,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 3710.6ms TimeCoverageRelationStatistics Valid=812, Invalid=2494, Unknown=0, NotChecked=0, Total=3306 [2021-10-08 17:25:52,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10930 states. [2021-10-08 17:25:52,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10930 to 6276. [2021-10-08 17:25:52,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6276 states, 6275 states have (on average 4.416892430278884) internal successors, (27716), 6275 states have internal predecessors, (27716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:25:52,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6276 states to 6276 states and 27716 transitions. [2021-10-08 17:25:52,658 INFO L78 Accepts]: Start accepts. Automaton has 6276 states and 27716 transitions. Word has length 24 [2021-10-08 17:25:52,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:25:52,659 INFO L470 AbstractCegarLoop]: Abstraction has 6276 states and 27716 transitions. [2021-10-08 17:25:52,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:25:52,659 INFO L276 IsEmpty]: Start isEmpty. Operand 6276 states and 27716 transitions. [2021-10-08 17:25:52,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 17:25:52,673 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:25:52,673 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:25:52,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (108)] Forceful destruction successful, exit code 0 [2021-10-08 17:25:52,874 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 [2021-10-08 17:25:52,874 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:25:52,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:25:52,875 INFO L82 PathProgramCache]: Analyzing trace with hash 104942381, now seen corresponding path program 96 times [2021-10-08 17:25:52,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:25:52,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611828092] [2021-10-08 17:25:52,876 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:25:52,876 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:25:52,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:25:52,878 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) [2021-10-08 17:25:52,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (109)] Waiting until timeout for monitored process Received shutdown request... [2021-10-08 17:25:53,730 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (109)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 17:25:53,742 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 [2021-10-08 17:25:54,737 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 17:25:54,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (109)] Ended with exit code 0 [2021-10-08 17:25:54,814 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 0 [2021-10-08 17:25:54,938 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 [2021-10-08 17:25:54,938 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 4,while executing Executor. [2021-10-08 17:25:54,941 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 17:25:54,941 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 17:25:54,941 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 17:25:54,941 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 17:25:54,941 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 17:25:54,942 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 17:25:54,942 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 17:25:54,942 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 17:25:54,942 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-08 17:25:54,942 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-08 17:25:54,942 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-08 17:25:54,942 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-08 17:25:54,942 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 17:25:54,943 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 17:25:54,943 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 17:25:54,943 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 17:25:54,948 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 17:25:54,948 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 17:25:54,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 05:25:54 BasicIcfg [2021-10-08 17:25:54,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 17:25:54,950 INFO L168 Benchmark]: Toolchain (without parser) took 745547.85 ms. Allocated memory was 159.4 MB in the beginning and 3.4 GB in the end (delta: 3.2 GB). Free memory was 133.2 MB in the beginning and 2.9 GB in the end (delta: -2.7 GB). Peak memory consumption was 988.3 MB. Max. memory is 8.0 GB. [2021-10-08 17:25:54,951 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 159.4 MB. Free memory was 130.6 MB in the beginning and 130.2 MB in the end (delta: 430.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 17:25:54,951 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.03 ms. Allocated memory is still 159.4 MB. Free memory was 132.8 MB in the beginning and 121.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-08 17:25:54,951 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.62 ms. Allocated memory is still 159.4 MB. Free memory was 121.7 MB in the beginning and 120.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 17:25:54,952 INFO L168 Benchmark]: Boogie Preprocessor took 34.80 ms. Allocated memory is still 159.4 MB. Free memory was 120.2 MB in the beginning and 118.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 17:25:54,952 INFO L168 Benchmark]: RCFGBuilder took 739.31 ms. Allocated memory is still 159.4 MB. Free memory was 118.6 MB in the beginning and 140.0 MB in the end (delta: -21.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 8.0 GB. [2021-10-08 17:25:54,952 INFO L168 Benchmark]: TraceAbstraction took 744398.13 ms. Allocated memory was 159.4 MB in the beginning and 3.4 GB in the end (delta: 3.2 GB). Free memory was 139.3 MB in the beginning and 2.9 GB in the end (delta: -2.7 GB). Peak memory consumption was 992.9 MB. Max. memory is 8.0 GB. [2021-10-08 17:25:54,954 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 159.4 MB. Free memory was 130.6 MB in the beginning and 130.2 MB in the end (delta: 430.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 315.03 ms. Allocated memory is still 159.4 MB. Free memory was 132.8 MB in the beginning and 121.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.62 ms. Allocated memory is still 159.4 MB. Free memory was 121.7 MB in the beginning and 120.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.80 ms. Allocated memory is still 159.4 MB. Free memory was 120.2 MB in the beginning and 118.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 739.31 ms. Allocated memory is still 159.4 MB. Free memory was 118.6 MB in the beginning and 140.0 MB in the end (delta: -21.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 744398.13 ms. Allocated memory was 159.4 MB in the beginning and 3.4 GB in the end (delta: 3.2 GB). Free memory was 139.3 MB in the beginning and 2.9 GB in the end (delta: -2.7 GB). Peak memory consumption was 992.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14624.9ms, 133 PlacesBefore, 43 PlacesAfterwards, 139 TransitionsBefore, 36 TransitionsAfterwards, 3570 CoEnabledTransitionPairs, 7 FixpointIterations, 57 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 13 ChoiceCompositions, 143 TotalNumberOfCompositions, 3492 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3492, positive: 3492, positive conditional: 0, positive unconditional: 3492, 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: 2253, positive: 2253, positive conditional: 0, positive unconditional: 2253, 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: 2253, positive: 2220, positive conditional: 0, positive unconditional: 2220, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 33, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 908, positive: 908, positive conditional: 0, positive unconditional: 908, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3492, positive: 1239, positive conditional: 0, positive unconditional: 1239, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2253, unknown conditional: 0, unknown unconditional: 2253] , Statistics on independence cache: Total cache size (in pairs): 63, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, 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: 119]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 4,while executing Executor. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 4,while executing Executor. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 4,while executing Executor. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 4,while executing Executor. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 4,while executing Executor. - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 4,while executing Executor. - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 4,while executing Executor. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 4,while executing Executor. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 4,while executing Executor. - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 4,while executing Executor. - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 4,while executing Executor. - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 4,while executing Executor. - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 4,while executing Executor. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 4,while executing Executor. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 4,while executing Executor. - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 4,while executing Executor. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 4,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 166 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 744221.7ms, OverallIterations: 108, TraceHistogramMax: 4, EmptinessCheckTime: 2430.2ms, AutomataDifference: 369529.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14685.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4963 SDtfs, 39353 SDslu, 42750 SDs, 0 SdLazy, 30655 SolverSat, 12962 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 48425.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7581 GetRequests, 2682 SyntacticMatches, 6 SemanticMatches, 4893 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65221 ImplicationChecksByTransitivity, 333801.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18048occurred in iteration=85, InterpolantAutomatonStates: 4452, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 33127.3ms AutomataMinimizationTime, 107 MinimizatonAttempts, 341948 StatesRemovedByMinimization, 94 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 947.6ms SsaConstructionTime, 19750.1ms SatisfiabilityAnalysisTime, 132191.4ms InterpolantComputationTime, 2251 NumberOfCodeBlocks, 2245 NumberOfCodeBlocksAsserted, 217 NumberOfCheckSat, 4288 ConstructedInterpolants, 6 QuantifiedInterpolants, 60771 SizeOfPredicates, 963 NumberOfNonLiveVariables, 10003 ConjunctsInSsa, 1611 ConjunctsInUnsatCore, 214 InterpolantComputations, 20 PerfectInterpolantSequences, 111/2018 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