/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/chl/name-comparator-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:01:29,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:01:29,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:01:29,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 21:01:29,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-06 21:01:29,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-06 21:01:29,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-06 21:01:29,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-06 21:01:29,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-06 21:01:29,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-06 21:01:29,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-06 21:01:29,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-06 21:01:29,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-06 21:01:29,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-06 21:01:29,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-06 21:01:29,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-06 21:01:29,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-06 21:01:29,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 21:01:29,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 21:01:29,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 21:01:29,443 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 21:01:29,471 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:01:29,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:01:29,472 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:01:29,472 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:01:29,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:01:29,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:01:29,474 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:01:29,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:01:29,474 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:01:29,475 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:01:29,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:01:29,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:01:29,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:01:29,475 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:01:29,476 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:01:29,476 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:01:29,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:01:29,476 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:01:29,476 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:01:29,477 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:01:29,477 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:01:29,477 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:01:29,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:01:29,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:01:29,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:01:29,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:01:29,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:01:29,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:01:29,479 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:01:29,479 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:01:29,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:01:29,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:01:29,479 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:01:29,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:01:29,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:01:29,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:01:29,931 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:01:29,933 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:01:29,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl/name-comparator-symm.wvr.c [2021-10-06 21:01:30,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5dcf3c4a3/14749ad5d03541e28de66494491a86a3/FLAG24fb3ff0a [2021-10-06 21:01:30,632 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:01:30,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/name-comparator-symm.wvr.c [2021-10-06 21:01:30,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5dcf3c4a3/14749ad5d03541e28de66494491a86a3/FLAG24fb3ff0a [2021-10-06 21:01:31,006 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5dcf3c4a3/14749ad5d03541e28de66494491a86a3 [2021-10-06 21:01:31,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:01:31,017 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:01:31,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:01:31,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:01:31,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:01:31,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:01:31" (1/1) ... [2021-10-06 21:01:31,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49ae9cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:31, skipping insertion in model container [2021-10-06 21:01:31,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:01:31" (1/1) ... [2021-10-06 21:01:31,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:01:31,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:01:31,374 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/chl/name-comparator-symm.wvr.c[4063,4076] [2021-10-06 21:01:31,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:01:31,395 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-06 21:01:31,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:01:31,424 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/chl/name-comparator-symm.wvr.c[4063,4076] [2021-10-06 21:01:31,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:01:31,437 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:01:31,504 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/chl/name-comparator-symm.wvr.c[4063,4076] [2021-10-06 21:01:31,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:01:31,537 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:01:31,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:31 WrapperNode [2021-10-06 21:01:31,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:01:31,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:01:31,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:01:31,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:01:31,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:31" (1/1) ... [2021-10-06 21:01:31,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:31" (1/1) ... [2021-10-06 21:01:31,626 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:01:31,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:01:31,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:01:31,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:01:31,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:31" (1/1) ... [2021-10-06 21:01:31,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:31" (1/1) ... [2021-10-06 21:01:31,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:31" (1/1) ... [2021-10-06 21:01:31,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:31" (1/1) ... [2021-10-06 21:01:31,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:31" (1/1) ... [2021-10-06 21:01:31,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:31" (1/1) ... [2021-10-06 21:01:31,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:31" (1/1) ... [2021-10-06 21:01:31,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:01:31,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:01:31,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:01:31,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:01:31,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:31" (1/1) ... [2021-10-06 21:01:31,724 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:01:31,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:01:31,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-06 21:01:31,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-06 21:01:31,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:01:31,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:01:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:01:31,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:01:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:01:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:01:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 21:01:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 21:01:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-06 21:01:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:01:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:01:31,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:01:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:01:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:01:31,827 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 21:01:33,454 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:01:33,454 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-10-06 21:01:33,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:01:33 BoogieIcfgContainer [2021-10-06 21:01:33,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:01:33,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:01:33,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:01:33,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:01:33,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:01:31" (1/3) ... [2021-10-06 21:01:33,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@141cfd78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:01:33, skipping insertion in model container [2021-10-06 21:01:33,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:31" (2/3) ... [2021-10-06 21:01:33,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@141cfd78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:01:33, skipping insertion in model container [2021-10-06 21:01:33,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:01:33" (3/3) ... [2021-10-06 21:01:33,465 INFO L111 eAbstractionObserver]: Analyzing ICFG name-comparator-symm.wvr.c [2021-10-06 21:01:33,471 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:01:33,471 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-10-06 21:01:33,471 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:01:33,505 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,505 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,505 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,505 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,506 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,506 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,506 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,506 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,507 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,507 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,507 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,507 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,508 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,511 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,511 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,511 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,512 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,512 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,512 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,512 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,512 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,513 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,513 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,513 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,513 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,514 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,514 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,514 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,514 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,514 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,515 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,515 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,515 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,515 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,515 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,516 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,517 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,517 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,518 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,518 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,518 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,519 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,519 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,519 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,519 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,519 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,520 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,520 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,521 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,521 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,521 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,521 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,521 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,522 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,522 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,523 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,523 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,523 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,523 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,524 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,524 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,525 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,525 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,525 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,525 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,526 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,526 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,526 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,526 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,526 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,527 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,527 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,527 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,528 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,528 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,528 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,528 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,528 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,529 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,529 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,529 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,529 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,530 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,530 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,530 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,531 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,531 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,532 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,533 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,534 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,534 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,535 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,543 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,548 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,548 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,549 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,549 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,549 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,549 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,549 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,550 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,550 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,551 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,552 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,552 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,552 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,555 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,555 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,555 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,555 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,556 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,556 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,556 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,556 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,556 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,557 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,557 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,557 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,557 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,557 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:33,561 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 21:01:33,626 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:01:33,636 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-06 21:01:33,637 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-06 21:01:33,659 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:01:33,671 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 164 transitions, 344 flow [2021-10-06 21:01:33,675 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 164 transitions, 344 flow [2021-10-06 21:01:33,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 159 places, 164 transitions, 344 flow [2021-10-06 21:01:33,754 INFO L129 PetriNetUnfolder]: 12/162 cut-off events. [2021-10-06 21:01:33,755 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 21:01:33,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 162 events. 12/162 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 149 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 103. Up to 2 conditions per place. [2021-10-06 21:01:33,763 INFO L116 LiptonReduction]: Number of co-enabled transitions 840 [2021-10-06 21:01:55,234 INFO L131 LiptonReduction]: Checked pairs total: 1062 [2021-10-06 21:01:55,234 INFO L133 LiptonReduction]: Total number of compositions: 177 [2021-10-06 21:01:55,246 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 86 flow [2021-10-06 21:01:55,272 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 150 states, 106 states have (on average 3.452830188679245) internal successors, (366), 149 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:55,275 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 106 states have (on average 3.452830188679245) internal successors, (366), 149 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:55,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-06 21:01:55,280 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:55,281 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-06 21:01:55,281 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:01:55,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:55,287 INFO L82 PathProgramCache]: Analyzing trace with hash 29585, now seen corresponding path program 1 times [2021-10-06 21:01:55,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:55,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223785857] [2021-10-06 21:01:55,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:55,301 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:55,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:55,307 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:55,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 21:01:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:55,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:01:55,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:55,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:55,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:55,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:55,472 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:55,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223785857] [2021-10-06 21:01:55,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223785857] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:55,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:55,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:01:55,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997003122] [2021-10-06 21:01:55,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:01:55,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:55,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:01:55,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:55,500 INFO L87 Difference]: Start difference. First operand has 150 states, 106 states have (on average 3.452830188679245) internal successors, (366), 149 states have internal predecessors, (366), 0 states have call successors, (0), 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 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:55,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:55,635 INFO L93 Difference]: Finished difference Result 153 states and 371 transitions. [2021-10-06 21:01:55,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:01:55,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-06 21:01:55,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:55,653 INFO L225 Difference]: With dead ends: 153 [2021-10-06 21:01:55,653 INFO L226 Difference]: Without dead ends: 153 [2021-10-06 21:01:55,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:55,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-06 21:01:55,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2021-10-06 21:01:55,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 108 states have (on average 3.435185185185185) internal successors, (371), 150 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:55,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 371 transitions. [2021-10-06 21:01:55,743 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 371 transitions. Word has length 2 [2021-10-06 21:01:55,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:55,743 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 371 transitions. [2021-10-06 21:01:55,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:55,744 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 371 transitions. [2021-10-06 21:01:55,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-06 21:01:55,744 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:55,744 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-06 21:01:55,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:55,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:55,956 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:01:55,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:55,957 INFO L82 PathProgramCache]: Analyzing trace with hash 29524, now seen corresponding path program 1 times [2021-10-06 21:01:55,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:55,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120893588] [2021-10-06 21:01:55,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:55,958 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:55,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:55,964 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:55,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 21:01:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:56,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:01:56,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:56,235 INFO L354 Elim1Store]: treesize reduction 133, result has 28.1 percent of original size [2021-10-06 21:01:56,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 57 [2021-10-06 21:01:56,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:56,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:56,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:56,416 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:56,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120893588] [2021-10-06 21:01:56,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120893588] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:56,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:56,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:01:56,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820339305] [2021-10-06 21:01:56,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:01:56,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:56,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:01:56,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:56,426 INFO L87 Difference]: Start difference. First operand 151 states and 371 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:56,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:56,674 INFO L93 Difference]: Finished difference Result 153 states and 369 transitions. [2021-10-06 21:01:56,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:01:56,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-06 21:01:56,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:56,680 INFO L225 Difference]: With dead ends: 153 [2021-10-06 21:01:56,680 INFO L226 Difference]: Without dead ends: 153 [2021-10-06 21:01:56,681 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:56,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-06 21:01:56,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2021-10-06 21:01:56,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 108 states have (on average 3.4166666666666665) internal successors, (369), 150 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 369 transitions. [2021-10-06 21:01:56,701 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 369 transitions. Word has length 2 [2021-10-06 21:01:56,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:56,701 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 369 transitions. [2021-10-06 21:01:56,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:56,701 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 369 transitions. [2021-10-06 21:01:56,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-06 21:01:56,702 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:56,702 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-06 21:01:56,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-06 21:01:56,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:56,914 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:01:56,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:56,915 INFO L82 PathProgramCache]: Analyzing trace with hash 29525, now seen corresponding path program 1 times [2021-10-06 21:01:56,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:56,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531487902] [2021-10-06 21:01:56,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:56,916 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:56,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:56,917 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:56,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 21:01:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:56,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:01:56,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:57,018 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-06 21:01:57,018 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 [2021-10-06 21:01:57,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:57,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:57,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:57,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531487902] [2021-10-06 21:01:57,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531487902] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:57,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:57,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:01:57,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931758261] [2021-10-06 21:01:57,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:01:57,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:57,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:01:57,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:01:57,058 INFO L87 Difference]: Start difference. First operand 151 states and 369 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:57,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:57,162 INFO L93 Difference]: Finished difference Result 150 states and 366 transitions. [2021-10-06 21:01:57,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:01:57,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-06 21:01:57,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:57,169 INFO L225 Difference]: With dead ends: 150 [2021-10-06 21:01:57,169 INFO L226 Difference]: Without dead ends: 150 [2021-10-06 21:01:57,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:01:57,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-06 21:01:57,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-10-06 21:01:57,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 108 states have (on average 3.388888888888889) internal successors, (366), 149 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:57,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 366 transitions. [2021-10-06 21:01:57,196 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 366 transitions. Word has length 2 [2021-10-06 21:01:57,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:57,197 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 366 transitions. [2021-10-06 21:01:57,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:57,199 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 366 transitions. [2021-10-06 21:01:57,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 21:01:57,200 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:57,202 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-06 21:01:57,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:57,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:57,417 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:01:57,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:57,418 INFO L82 PathProgramCache]: Analyzing trace with hash 28466257, now seen corresponding path program 1 times [2021-10-06 21:01:57,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:57,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252466330] [2021-10-06 21:01:57,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:57,419 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:57,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:57,420 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:57,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 21:01:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:57,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:01:57,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:57,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:57,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:57,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:57,630 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:57,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252466330] [2021-10-06 21:01:57,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252466330] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:57,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:57,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-06 21:01:57,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146186473] [2021-10-06 21:01:57,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:01:57,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:57,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:01:57,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:01:57,632 INFO L87 Difference]: Start difference. First operand 150 states and 366 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:57,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:57,737 INFO L93 Difference]: Finished difference Result 152 states and 368 transitions. [2021-10-06 21:01:57,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:01:57,738 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-06 21:01:57,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:57,742 INFO L225 Difference]: With dead ends: 152 [2021-10-06 21:01:57,742 INFO L226 Difference]: Without dead ends: 152 [2021-10-06 21:01:57,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 83.6ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:01:57,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-06 21:01:57,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2021-10-06 21:01:57,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 109 states have (on average 3.376146788990826) internal successors, (368), 150 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:57,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 368 transitions. [2021-10-06 21:01:57,755 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 368 transitions. Word has length 4 [2021-10-06 21:01:57,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:57,755 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 368 transitions. [2021-10-06 21:01:57,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:57,756 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 368 transitions. [2021-10-06 21:01:57,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 21:01:57,756 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:57,756 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-06 21:01:57,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:57,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:57,968 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:01:57,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:57,969 INFO L82 PathProgramCache]: Analyzing trace with hash 28466196, now seen corresponding path program 1 times [2021-10-06 21:01:57,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:57,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840921514] [2021-10-06 21:01:57,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:57,971 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:57,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:57,972 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:57,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 21:01:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:58,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:01:58,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:58,204 INFO L354 Elim1Store]: treesize reduction 133, result has 28.1 percent of original size [2021-10-06 21:01:58,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 57 [2021-10-06 21:01:58,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:58,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:58,666 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:58,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840921514] [2021-10-06 21:01:58,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1840921514] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:58,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:58,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-06 21:01:58,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019439410] [2021-10-06 21:01:58,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:01:58,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:58,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:01:58,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:01:58,668 INFO L87 Difference]: Start difference. First operand 151 states and 368 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:59,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:59,051 INFO L93 Difference]: Finished difference Result 151 states and 367 transitions. [2021-10-06 21:01:59,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:01:59,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-06 21:01:59,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:59,054 INFO L225 Difference]: With dead ends: 151 [2021-10-06 21:01:59,054 INFO L226 Difference]: Without dead ends: 151 [2021-10-06 21:01:59,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 286.8ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:01:59,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-10-06 21:01:59,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-10-06 21:01:59,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 109 states have (on average 3.36697247706422) internal successors, (367), 150 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:59,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 367 transitions. [2021-10-06 21:01:59,071 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 367 transitions. Word has length 4 [2021-10-06 21:01:59,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:59,072 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 367 transitions. [2021-10-06 21:01:59,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:59,072 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 367 transitions. [2021-10-06 21:01:59,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:01:59,072 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:59,073 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1] [2021-10-06 21:01:59,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:59,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:59,285 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:01:59,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:59,286 INFO L82 PathProgramCache]: Analyzing trace with hash 882455063, now seen corresponding path program 2 times [2021-10-06 21:01:59,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:59,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269644874] [2021-10-06 21:01:59,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:01:59,287 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:59,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:59,288 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:59,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 21:01:59,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:01:59,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:59,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:01:59,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:59,518 INFO L354 Elim1Store]: treesize reduction 133, result has 28.1 percent of original size [2021-10-06 21:01:59,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 67 [2021-10-06 21:01:59,529 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 68 treesize of output 66 [2021-10-06 21:02:00,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:00,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:00,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:00,425 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:00,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269644874] [2021-10-06 21:02:00,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269644874] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:00,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:00,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:02:00,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091089524] [2021-10-06 21:02:00,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:02:00,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:00,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:02:00,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:00,428 INFO L87 Difference]: Start difference. First operand 151 states and 367 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:00,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:00,516 INFO L93 Difference]: Finished difference Result 125 states and 291 transitions. [2021-10-06 21:02:00,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:02:00,517 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 5 [2021-10-06 21:02:00,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:00,518 INFO L225 Difference]: With dead ends: 125 [2021-10-06 21:02:00,518 INFO L226 Difference]: Without dead ends: 125 [2021-10-06 21:02:00,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:00,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-06 21:02:00,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-10-06 21:02:00,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 93 states have (on average 3.129032258064516) internal successors, (291), 124 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:00,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 291 transitions. [2021-10-06 21:02:00,526 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 291 transitions. Word has length 5 [2021-10-06 21:02:00,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:00,527 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 291 transitions. [2021-10-06 21:02:00,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:00,527 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 291 transitions. [2021-10-06 21:02:00,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:02:00,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:00,527 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1] [2021-10-06 21:02:00,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-06 21:02:00,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:00,741 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:02:00,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:00,743 INFO L82 PathProgramCache]: Analyzing trace with hash 882455064, now seen corresponding path program 1 times [2021-10-06 21:02:00,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:00,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919865670] [2021-10-06 21:02:00,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:00,744 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:00,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:00,745 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:00,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 21:02:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:00,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:02:00,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:00,871 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-06 21:02:00,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 31 [2021-10-06 21:02:00,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:00,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:00,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:00,975 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:00,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919865670] [2021-10-06 21:02:00,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919865670] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:00,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:00,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:02:00,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837411947] [2021-10-06 21:02:00,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:02:00,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:00,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:02:00,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:00,977 INFO L87 Difference]: Start difference. First operand 125 states and 291 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:01,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:01,037 INFO L93 Difference]: Finished difference Result 99 states and 215 transitions. [2021-10-06 21:02:01,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:02:01,038 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 5 [2021-10-06 21:02:01,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:01,039 INFO L225 Difference]: With dead ends: 99 [2021-10-06 21:02:01,040 INFO L226 Difference]: Without dead ends: 99 [2021-10-06 21:02:01,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:01,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-06 21:02:01,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-10-06 21:02:01,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 77 states have (on average 2.792207792207792) internal successors, (215), 98 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:01,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 215 transitions. [2021-10-06 21:02:01,045 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 215 transitions. Word has length 5 [2021-10-06 21:02:01,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:01,045 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 215 transitions. [2021-10-06 21:02:01,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:01,045 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 215 transitions. [2021-10-06 21:02:01,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:02:01,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:01,046 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1] [2021-10-06 21:02:01,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:01,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:01,256 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:02:01,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:01,257 INFO L82 PathProgramCache]: Analyzing trace with hash 882455002, now seen corresponding path program 2 times [2021-10-06 21:02:01,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:01,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205243099] [2021-10-06 21:02:01,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:02:01,258 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:01,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:01,260 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:01,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 21:02:01,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:02:01,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:01,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:02:01,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:01,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:02:01,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:02:01,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:02:01,511 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-06 21:02:01,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-06 21:02:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:01,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:02,342 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:02,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205243099] [2021-10-06 21:02:02,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205243099] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:02,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:02,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-06 21:02:02,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225957913] [2021-10-06 21:02:02,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:02:02,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:02,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:02:02,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:02:02,344 INFO L87 Difference]: Start difference. First operand 99 states and 215 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:02,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:02,485 INFO L93 Difference]: Finished difference Result 98 states and 213 transitions. [2021-10-06 21:02:02,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:02:02,486 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:02:02,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:02,487 INFO L225 Difference]: With dead ends: 98 [2021-10-06 21:02:02,488 INFO L226 Difference]: Without dead ends: 98 [2021-10-06 21:02:02,488 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 544.0ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:02:02,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-06 21:02:02,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-10-06 21:02:02,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 77 states have (on average 2.7662337662337664) internal successors, (213), 97 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:02,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 213 transitions. [2021-10-06 21:02:02,492 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 213 transitions. Word has length 5 [2021-10-06 21:02:02,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:02,492 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 213 transitions. [2021-10-06 21:02:02,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:02,493 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 213 transitions. [2021-10-06 21:02:02,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:02:02,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:02,493 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2021-10-06 21:02:02,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-06 21:02:02,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:02,703 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:02:02,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:02,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1930780365, now seen corresponding path program 1 times [2021-10-06 21:02:02,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:02,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540277272] [2021-10-06 21:02:02,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:02,705 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:02,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:02,708 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:02,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 21:02:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:02,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:02:02,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:02,840 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-06 21:02:02,841 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 [2021-10-06 21:02:02,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:02,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:02,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:02,894 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:02,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540277272] [2021-10-06 21:02:02,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540277272] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:02,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:02,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:02:02,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605743374] [2021-10-06 21:02:02,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:02:02,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:02,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:02:02,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:02:02,896 INFO L87 Difference]: Start difference. First operand 98 states and 213 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:02,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:02,949 INFO L93 Difference]: Finished difference Result 88 states and 193 transitions. [2021-10-06 21:02:02,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:02:02,949 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 7 [2021-10-06 21:02:02,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:02,953 INFO L225 Difference]: With dead ends: 88 [2021-10-06 21:02:02,953 INFO L226 Difference]: Without dead ends: 88 [2021-10-06 21:02:02,954 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:02:02,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-06 21:02:02,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-10-06 21:02:02,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 73 states have (on average 2.643835616438356) internal successors, (193), 87 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:02,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 193 transitions. [2021-10-06 21:02:02,959 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 193 transitions. Word has length 7 [2021-10-06 21:02:02,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:02,960 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 193 transitions. [2021-10-06 21:02:02,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:02,960 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 193 transitions. [2021-10-06 21:02:02,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:02:02,961 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:02,961 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2021-10-06 21:02:02,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:03,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:03,173 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:02:03,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:03,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1930780366, now seen corresponding path program 1 times [2021-10-06 21:02:03,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:03,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853666481] [2021-10-06 21:02:03,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:03,187 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:03,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:03,191 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:03,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 21:02:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:03,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:02:03,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:03,468 INFO L354 Elim1Store]: treesize reduction 149, result has 22.8 percent of original size [2021-10-06 21:02:03,469 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 33 treesize of output 63 [2021-10-06 21:02:03,474 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 65 treesize of output 63 [2021-10-06 21:02:03,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:03,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:04,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:04,067 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:04,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853666481] [2021-10-06 21:02:04,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853666481] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:04,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:04,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:02:04,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570510807] [2021-10-06 21:02:04,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:02:04,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:04,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:02:04,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:04,069 INFO L87 Difference]: Start difference. First operand 88 states and 193 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:04,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:04,139 INFO L93 Difference]: Finished difference Result 78 states and 173 transitions. [2021-10-06 21:02:04,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:02:04,140 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 7 [2021-10-06 21:02:04,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:04,141 INFO L225 Difference]: With dead ends: 78 [2021-10-06 21:02:04,142 INFO L226 Difference]: Without dead ends: 78 [2021-10-06 21:02:04,142 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:04,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-06 21:02:04,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-06 21:02:04,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 69 states have (on average 2.5072463768115942) internal successors, (173), 77 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:04,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 173 transitions. [2021-10-06 21:02:04,146 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 173 transitions. Word has length 7 [2021-10-06 21:02:04,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:04,146 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 173 transitions. [2021-10-06 21:02:04,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:04,146 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 173 transitions. [2021-10-06 21:02:04,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-06 21:02:04,147 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:04,147 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2021-10-06 21:02:04,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:04,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:04,358 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:02:04,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:04,359 INFO L82 PathProgramCache]: Analyzing trace with hash -275355508, now seen corresponding path program 1 times [2021-10-06 21:02:04,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:04,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991495115] [2021-10-06 21:02:04,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:04,360 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:04,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:04,361 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:04,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 21:02:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-06 21:02:04,479 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-06 21:02:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-06 21:02:04,599 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-06 21:02:04,600 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-06 21:02:04,601 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location thread1Err0REQUIRES_VIOLATION [2021-10-06 21:02:04,602 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATION [2021-10-06 21:02:04,603 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATION [2021-10-06 21:02:04,603 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATION [2021-10-06 21:02:04,603 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATION [2021-10-06 21:02:04,603 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:02:04,603 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:02:04,603 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:02:04,603 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:02:04,604 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:02:04,604 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:02:04,604 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:02:04,604 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:02:04,604 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-06 21:02:04,604 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-06 21:02:04,605 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:02:04,605 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:02:04,605 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:02:04,605 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:02:04,605 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATION [2021-10-06 21:02:04,605 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATION [2021-10-06 21:02:04,605 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATION [2021-10-06 21:02:04,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:04,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:04,819 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:02:04,820 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:02:04,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:02:04 BasicIcfg [2021-10-06 21:02:04,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:02:04,853 INFO L168 Benchmark]: Toolchain (without parser) took 33842.68 ms. Allocated memory was 161.5 MB in the beginning and 210.8 MB in the end (delta: 49.3 MB). Free memory was 135.3 MB in the beginning and 105.2 MB in the end (delta: 30.1 MB). Peak memory consumption was 80.4 MB. Max. memory is 8.0 GB. [2021-10-06 21:02:04,854 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 161.5 MB. Free memory is still 133.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:02:04,854 INFO L168 Benchmark]: CACSL2BoogieTranslator took 518.97 ms. Allocated memory is still 161.5 MB. Free memory was 135.0 MB in the beginning and 120.7 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-06 21:02:04,855 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.46 ms. Allocated memory is still 161.5 MB. Free memory was 120.7 MB in the beginning and 118.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:02:04,855 INFO L168 Benchmark]: Boogie Preprocessor took 83.12 ms. Allocated memory is still 161.5 MB. Free memory was 118.4 MB in the beginning and 116.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:02:04,856 INFO L168 Benchmark]: RCFGBuilder took 1745.68 ms. Allocated memory is still 161.5 MB. Free memory was 116.5 MB in the beginning and 105.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:02:04,856 INFO L168 Benchmark]: TraceAbstraction took 31393.81 ms. Allocated memory was 161.5 MB in the beginning and 210.8 MB in the end (delta: 49.3 MB). Free memory was 105.1 MB in the beginning and 105.2 MB in the end (delta: -147.8 kB). Peak memory consumption was 49.7 MB. Max. memory is 8.0 GB. [2021-10-06 21:02:04,858 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 161.5 MB. Free memory is still 133.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 518.97 ms. Allocated memory is still 161.5 MB. Free memory was 135.0 MB in the beginning and 120.7 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 87.46 ms. Allocated memory is still 161.5 MB. Free memory was 120.7 MB in the beginning and 118.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 83.12 ms. Allocated memory is still 161.5 MB. Free memory was 118.4 MB in the beginning and 116.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1745.68 ms. Allocated memory is still 161.5 MB. Free memory was 116.5 MB in the beginning and 105.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 31393.81 ms. Allocated memory was 161.5 MB in the beginning and 210.8 MB in the end (delta: 49.3 MB). Free memory was 105.1 MB in the beginning and 105.2 MB in the end (delta: -147.8 kB). Peak memory consumption was 49.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21559.6ms, 159 PlacesBefore, 39 PlacesAfterwards, 164 TransitionsBefore, 35 TransitionsAfterwards, 840 CoEnabledTransitionPairs, 7 FixpointIterations, 118 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 8 ConcurrentYvCompositions, 9 ChoiceCompositions, 177 TotalNumberOfCompositions, 1062 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1048, positive: 1034, positive conditional: 0, positive unconditional: 1034, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 493, positive: 490, positive conditional: 0, positive unconditional: 490, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 493, positive: 490, positive conditional: 0, positive unconditional: 490, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 209, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 209, negative conditional: 0, negative unconditional: 209, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1048, positive: 544, positive conditional: 0, positive unconditional: 544, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 493, unknown conditional: 0, unknown unconditional: 493] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 47, Positive conditional cache size: 0, Positive unconditional cache size: 47, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - 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 - CounterExampleResult [Line: 54]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L38] 0 int* nondet_0; [L39] 0 int name_1, name_2, result_3, i_4, current_5, break_6, result_7, i_8, current_9, break_10; [L99] 0 pthread_t t1, t2, t3; [L101] 0 int* nondet_0; [L102] 0 int ult_7, i_8, current_9, break_10; [L105] 0 name_1 = __VERIFIER_nondet_int() [L106] 0 name_2 = __VERIFIER_nondet_int() [L107] 0 result_3 = __VERIFIER_nondet_int() [L108] 0 i_4 = __VERIFIER_nondet_int() [L109] 0 current_5 = __VERIFIER_nondet_int() [L110] 0 break_6 = __VERIFIER_nondet_int() [L111] 0 result_7 = __VERIFIER_nondet_int() [L112] 0 i_8 = __VERIFIER_nondet_int() [L113] 0 current_9 = __VERIFIER_nondet_int() [L114] 0 break_10 = __VERIFIER_nondet_int() [L35] COND FALSE 0 !(!cond) [L130] 0 int* arr = (int*)malloc(sizeof(int) * size); [L131] 0 int i = 0; VAL [break_10=0, current_9=0, i_8=0, nondet_0={0:0}] [L131] COND TRUE 0 i < size [L132] 0 arr[i] = __VERIFIER_nondet_int() [L131] 0 i++ VAL [break_10=0, current_9=0, i_8=0, nondet_0={0:0}] [L131] COND TRUE 0 i < size [L132] 0 arr[i] = __VERIFIER_nondet_int() [L131] 0 i++ VAL [break_10=0, current_9=0, i_8=0, nondet_0={0:0}] [L131] COND TRUE 0 i < size [L132] 0 arr[i] = __VERIFIER_nondet_int() [L131] 0 i++ VAL [break_10=0, current_9=0, i_8=0, nondet_0={0:0}] [L131] COND FALSE 0 !(i < size) [L134] 0 return arr; [L115] 0 nondet_0 = create_fresh_int_array(3) [L118] FCALL, FORK 0 pthread_create(&t1, NULL, thread1, NULL) VAL [break_10=0, current_9=0, i_8=0, nondet_0={0:0}] [L45] 1 i_4 = 0 [L46] 1 break_6 = 0 [L47] EXPR 1 ( name_1 == name_2 ) ? 0 : result_3 [L47] 1 result_3 = ( name_1 == name_2 ) ? 0 : result_3 [L48] EXPR 1 ( name_1 == name_2 ) ? 1 : break_6 [L48] 1 break_6 = ( name_1 == name_2 ) ? 1 : break_6 [L51] COND TRUE 1 __VERIFIER_nondet_bool() [L35] COND FALSE 1 !(!cond) [L54] 1 nondet_0[i_4] - UnprovableResult [Line: 54]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 81]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 81]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 132]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 132]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 118]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 118]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 119]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 119]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 120]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 120]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 121]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 121]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 124]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 98]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 118]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 119]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 177 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 31193.4ms, OverallIterations: 11, TraceHistogramMax: 3, EmptinessCheckTime: 11.8ms, AutomataDifference: 1477.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 21635.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 196 SDtfs, 213 SDslu, 191 SDs, 0 SdLazy, 226 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1150.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1138.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=151occurred in iteration=1, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 170.4ms AutomataMinimizationTime, 10 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 106.1ms SsaConstructionTime, 380.5ms SatisfiabilityAnalysisTime, 4400.7ms InterpolantComputationTime, 51 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 66 ConstructedInterpolants, 14 QuantifiedInterpolants, 1059 SizeOfPredicates, 41 NumberOfNonLiveVariables, 518 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 20 InterpolantComputations, 14 PerfectInterpolantSequences, 48/72 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 proved your program to be incorrect! [2021-10-06 21:02:04,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...