/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/popl20-more-buffer-mult2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 21:07:36,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 21:07:36,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 21:07:36,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 21:07:36,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 21:07:36,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 21:07:36,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 21:07:36,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 21:07:36,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 21:07:36,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 21:07:36,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 21:07:36,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 21:07:36,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 21:07:36,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 21:07:36,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 21:07:36,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 21:07:36,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 21:07:36,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 21:07:36,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 21:07:36,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 21:07:36,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 21:07:36,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 21:07:36,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 21:07:36,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 21:07:36,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-13 21:07:36,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 21:07:36,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 21:07:36,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 21:07:36,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 21:07:36,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 21:07:36,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 21:07:36,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 21:07:36,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 21:07:36,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 21:07:36,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 21:07:36,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 21:07:36,673 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 21:07:36,726 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 21:07:36,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 21:07:36,727 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 21:07:36,727 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 21:07:36,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 21:07:36,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 21:07:36,732 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 21:07:36,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 21:07:36,733 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 21:07:36,733 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 21:07:36,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 21:07:36,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 21:07:36,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 21:07:36,735 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 21:07:36,735 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 21:07:36,735 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 21:07:36,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 21:07:36,736 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 21:07:36,736 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 21:07:36,736 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 21:07:36,736 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 21:07:36,736 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 21:07:36,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 21:07:36,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 21:07:36,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 21:07:36,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 21:07:36,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 21:07:36,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 21:07:36,738 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 21:07:36,738 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 21:07:36,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 21:07:36,739 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 21:07:36,739 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 21:07:37,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 21:07:37,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 21:07:37,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 21:07:37,201 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 21:07:37,202 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 21:07:37,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2021-10-13 21:07:37,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/308af3163/e156b2311a34408e9ecb99b5b60c8845/FLAGfc8de2cbd [2021-10-13 21:07:38,023 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 21:07:38,025 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2021-10-13 21:07:38,036 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/308af3163/e156b2311a34408e9ecb99b5b60c8845/FLAGfc8de2cbd [2021-10-13 21:07:38,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/308af3163/e156b2311a34408e9ecb99b5b60c8845 [2021-10-13 21:07:38,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 21:07:38,353 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 21:07:38,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 21:07:38,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 21:07:38,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 21:07:38,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:07:38" (1/1) ... [2021-10-13 21:07:38,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a78c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:38, skipping insertion in model container [2021-10-13 21:07:38,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:07:38" (1/1) ... [2021-10-13 21:07:38,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 21:07:38,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 21:07:38,700 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/popl20-more-buffer-mult2.wvr.c[3529,3542] [2021-10-13 21:07:38,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 21:07:38,762 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 21:07:38,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 21:07:38,789 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/popl20-more-buffer-mult2.wvr.c[3529,3542] [2021-10-13 21:07:38,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 21:07:38,802 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 21:07:38,834 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/popl20-more-buffer-mult2.wvr.c[3529,3542] [2021-10-13 21:07:38,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 21:07:38,866 INFO L208 MainTranslator]: Completed translation [2021-10-13 21:07:38,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:38 WrapperNode [2021-10-13 21:07:38,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 21:07:38,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 21:07:38,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 21:07:38,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 21:07:38,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:38" (1/1) ... [2021-10-13 21:07:38,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:38" (1/1) ... [2021-10-13 21:07:38,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 21:07:38,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 21:07:38,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 21:07:38,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 21:07:38,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:38" (1/1) ... [2021-10-13 21:07:38,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:38" (1/1) ... [2021-10-13 21:07:38,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:38" (1/1) ... [2021-10-13 21:07:38,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:38" (1/1) ... [2021-10-13 21:07:38,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:38" (1/1) ... [2021-10-13 21:07:38,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:38" (1/1) ... [2021-10-13 21:07:38,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:38" (1/1) ... [2021-10-13 21:07:39,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 21:07:39,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 21:07:39,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 21:07:39,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 21:07:39,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:38" (1/1) ... [2021-10-13 21:07:39,039 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 21:07:39,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 21:07:39,080 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) [2021-10-13 21:07:39,105 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 [2021-10-13 21:07:39,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 21:07:39,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 21:07:39,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 21:07:39,162 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 21:07:39,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 21:07:39,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 21:07:39,165 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 21:07:39,166 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-13 21:07:39,166 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-13 21:07:39,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-13 21:07:39,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-13 21:07:39,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 21:07:39,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 21:07:39,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 21:07:39,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 21:07:39,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 21:07:39,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 21:07:39,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 21:07:39,171 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 21:07:41,345 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 21:07:41,345 INFO L299 CfgBuilder]: Removed 54 assume(true) statements. [2021-10-13 21:07:41,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:07:41 BoogieIcfgContainer [2021-10-13 21:07:41,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 21:07:41,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 21:07:41,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 21:07:41,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 21:07:41,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:07:38" (1/3) ... [2021-10-13 21:07:41,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ae8586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:07:41, skipping insertion in model container [2021-10-13 21:07:41,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:38" (2/3) ... [2021-10-13 21:07:41,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ae8586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:07:41, skipping insertion in model container [2021-10-13 21:07:41,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:07:41" (3/3) ... [2021-10-13 21:07:41,358 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2021-10-13 21:07:41,365 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 21:07:41,365 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-10-13 21:07:41,366 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 21:07:41,410 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,410 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,411 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,411 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,411 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,411 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,411 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,412 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,412 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,412 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,412 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,412 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,413 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,413 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,413 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,413 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,413 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,414 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,414 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,414 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,414 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,414 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,415 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,415 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,415 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,416 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,416 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,416 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,416 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,416 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,417 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,417 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,417 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,417 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,418 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,418 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,418 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,418 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,418 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,418 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,419 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,419 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,419 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,419 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,420 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,420 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,420 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,420 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,421 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,421 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,421 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,421 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,421 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,422 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,422 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,422 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,422 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,422 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,423 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,423 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,423 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,423 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,423 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,423 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,424 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,424 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,424 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,424 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,425 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,425 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,425 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,425 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,425 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,425 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,426 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,426 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,427 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,427 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,427 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,427 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,427 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,427 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,428 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,428 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,428 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,428 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,429 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,429 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,429 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,429 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,429 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,430 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,430 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,430 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,430 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,430 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,430 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,431 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,431 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,431 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,431 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,432 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,432 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,432 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,432 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,432 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,432 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,432 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,436 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,437 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,437 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,437 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,437 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,437 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,437 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,440 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,440 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,440 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,440 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,441 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,441 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,441 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,441 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,441 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,442 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,442 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,442 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,444 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,444 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,444 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,445 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,445 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,445 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,445 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,447 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,447 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,447 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,447 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,448 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,448 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,448 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,448 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,448 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,449 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,449 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,449 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:07:41,457 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-13 21:07:41,511 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 21:07:41,519 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 [2021-10-13 21:07:41,519 INFO L340 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2021-10-13 21:07:41,541 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 21:07:41,554 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 225 transitions, 482 flow [2021-10-13 21:07:41,558 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 225 transitions, 482 flow [2021-10-13 21:07:41,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 220 places, 225 transitions, 482 flow [2021-10-13 21:07:41,654 INFO L129 PetriNetUnfolder]: 18/221 cut-off events. [2021-10-13 21:07:41,655 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-13 21:07:41,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 221 events. 18/221 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 180 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 174. Up to 2 conditions per place. [2021-10-13 21:07:41,671 INFO L116 LiptonReduction]: Number of co-enabled transitions 2336 [2021-10-13 21:08:09,095 WARN L207 SmtUtils]: Spent 5.03 s on a formula simplification. DAG size of input: 168 DAG size of output: 167 [2021-10-13 21:08:16,607 INFO L131 LiptonReduction]: Checked pairs total: 5152 [2021-10-13 21:08:16,607 INFO L133 LiptonReduction]: Total number of compositions: 232 [2021-10-13 21:08:16,625 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 65 transitions, 162 flow [2021-10-13 21:08:16,805 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2533 states, 2127 states have (on average 5.199341795956746) internal successors, (11059), 2532 states have internal predecessors, (11059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:08:16,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 2533 states, 2127 states have (on average 5.199341795956746) internal successors, (11059), 2532 states have internal predecessors, (11059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:08:16,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 21:08:16,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:08:16,829 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 21:08:16,830 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:08:16,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:08:16,839 INFO L82 PathProgramCache]: Analyzing trace with hash 35228, now seen corresponding path program 1 times [2021-10-13 21:08:16,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:08:16,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798754392] [2021-10-13 21:08:16,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:08:16,855 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:08:16,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:08:16,860 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) [2021-10-13 21:08:16,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 21:08:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:08:16,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 21:08:16,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:08:17,560 INFO L354 Elim1Store]: treesize reduction 499, result has 13.2 percent of original size [2021-10-13 21:08:17,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 81 [2021-10-13 21:08:18,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:08:18,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:08:18,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:08:18,722 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:08:18,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798754392] [2021-10-13 21:08:18,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798754392] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:08:18,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:08:18,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 21:08:18,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175714534] [2021-10-13 21:08:18,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 21:08:18,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:08:18,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 21:08:18,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 21:08:18,762 INFO L87 Difference]: Start difference. First operand has 2533 states, 2127 states have (on average 5.199341795956746) internal successors, (11059), 2532 states have internal predecessors, (11059), 0 states have call successors, (0), 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 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) [2021-10-13 21:08:19,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:08:19,080 INFO L93 Difference]: Finished difference Result 2530 states and 11056 transitions. [2021-10-13 21:08:19,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:08:19,083 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 [2021-10-13 21:08:19,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:08:19,137 INFO L225 Difference]: With dead ends: 2530 [2021-10-13 21:08:19,137 INFO L226 Difference]: Without dead ends: 2530 [2021-10-13 21:08:19,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 21:08:19,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2021-10-13 21:08:19,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2530. [2021-10-13 21:08:19,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2127 states have (on average 5.1979313587212035) internal successors, (11056), 2529 states have internal predecessors, (11056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:08:19,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 11056 transitions. [2021-10-13 21:08:19,356 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 11056 transitions. Word has length 2 [2021-10-13 21:08:19,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:08:19,356 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 11056 transitions. [2021-10-13 21:08:19,356 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) [2021-10-13 21:08:19,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 11056 transitions. [2021-10-13 21:08:19,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 21:08:19,357 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:08:19,357 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 21:08:19,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 21:08:19,579 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 [2021-10-13 21:08:19,580 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:08:19,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:08:19,582 INFO L82 PathProgramCache]: Analyzing trace with hash 35227, now seen corresponding path program 1 times [2021-10-13 21:08:19,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:08:19,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890884720] [2021-10-13 21:08:19,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:08:19,583 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:08:19,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:08:19,585 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) [2021-10-13 21:08:19,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 21:08:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:08:19,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 21:08:19,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:08:19,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:08:19,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:08:20,115 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 21:08:20,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-13 21:08:20,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:08:20,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:08:20,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:08:20,321 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:08:20,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890884720] [2021-10-13 21:08:20,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890884720] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:08:20,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:08:20,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 21:08:20,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267261896] [2021-10-13 21:08:20,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:08:20,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:08:20,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:08:20,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:08:20,325 INFO L87 Difference]: Start difference. First operand 2530 states and 11056 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) [2021-10-13 21:08:21,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:08:21,216 INFO L93 Difference]: Finished difference Result 5059 states and 22115 transitions. [2021-10-13 21:08:21,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:08:21,218 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 [2021-10-13 21:08:21,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:08:21,293 INFO L225 Difference]: With dead ends: 5059 [2021-10-13 21:08:21,294 INFO L226 Difference]: Without dead ends: 5059 [2021-10-13 21:08:21,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 76.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:08:21,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5059 states. [2021-10-13 21:08:21,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5059 to 2534. [2021-10-13 21:08:21,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2534 states, 2131 states have (on average 5.193805725011732) internal successors, (11068), 2533 states have internal predecessors, (11068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:08:21,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 11068 transitions. [2021-10-13 21:08:21,493 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 11068 transitions. Word has length 2 [2021-10-13 21:08:21,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:08:21,493 INFO L470 AbstractCegarLoop]: Abstraction has 2534 states and 11068 transitions. [2021-10-13 21:08:21,494 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) [2021-10-13 21:08:21,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 11068 transitions. [2021-10-13 21:08:21,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 21:08:21,494 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:08:21,494 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 21:08:21,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 21:08:21,707 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 [2021-10-13 21:08:21,708 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:08:21,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:08:21,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1099084, now seen corresponding path program 1 times [2021-10-13 21:08:21,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:08:21,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348631731] [2021-10-13 21:08:21,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:08:21,713 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:08:21,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:08:21,715 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) [2021-10-13 21:08:21,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 21:08:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:08:21,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 21:08:21,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:08:22,309 INFO L354 Elim1Store]: treesize reduction 526, result has 12.2 percent of original size [2021-10-13 21:08:22,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 13 case distinctions, treesize of input 210 treesize of output 252 [2021-10-13 21:08:31,756 INFO L354 Elim1Store]: treesize reduction 242, result has 35.8 percent of original size [2021-10-13 21:08:31,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 151 treesize of output 268 [2021-10-13 21:09:13,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:09:13,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:09:13,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:09:13,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:09:13,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348631731] [2021-10-13 21:09:13,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348631731] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:09:13,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:09:13,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 1] imperfect sequences [] total 3 [2021-10-13 21:09:13,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722258286] [2021-10-13 21:09:13,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 21:09:13,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:09:13,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 21:09:13,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=0, Total=20 [2021-10-13 21:09:13,770 INFO L87 Difference]: Start difference. First operand 2534 states and 11068 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-10-13 21:09:26,214 WARN L207 SmtUtils]: Spent 8.16 s on a formula simplification. DAG size of input: 175 DAG size of output: 170 [2021-10-13 21:09:36,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:09:36,013 INFO L93 Difference]: Finished difference Result 2133 states and 9065 transitions. [2021-10-13 21:09:36,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:09:36,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 21:09:36,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:09:36,058 INFO L225 Difference]: With dead ends: 2133 [2021-10-13 21:09:36,058 INFO L226 Difference]: Without dead ends: 2133 [2021-10-13 21:09:36,059 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16339.9ms TimeCoverageRelationStatistics Valid=14, Invalid=12, Unknown=4, NotChecked=0, Total=30 [2021-10-13 21:09:36,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2133 states. [2021-10-13 21:09:36,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2133 to 2133. [2021-10-13 21:09:36,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2133 states, 1812 states have (on average 5.002759381898454) internal successors, (9065), 2132 states have internal predecessors, (9065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:09:36,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2133 states to 2133 states and 9065 transitions. [2021-10-13 21:09:36,185 INFO L78 Accepts]: Start accepts. Automaton has 2133 states and 9065 transitions. Word has length 3 [2021-10-13 21:09:36,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:09:36,185 INFO L470 AbstractCegarLoop]: Abstraction has 2133 states and 9065 transitions. [2021-10-13 21:09:36,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-10-13 21:09:36,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2133 states and 9065 transitions. [2021-10-13 21:09:36,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 21:09:36,187 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:09:36,187 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 21:09:36,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 21:09:36,399 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 [2021-10-13 21:09:36,400 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:09:36,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:09:36,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1099086, now seen corresponding path program 1 times [2021-10-13 21:09:36,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:09:36,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281650415] [2021-10-13 21:09:36,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:09:36,403 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:09:36,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:09:36,404 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) [2021-10-13 21:09:36,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 21:09:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:09:36,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 21:09:36,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:09:37,382 INFO L354 Elim1Store]: treesize reduction 367, result has 14.1 percent of original size [2021-10-13 21:09:37,382 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 6 case distinctions, treesize of input 96 treesize of output 136 [2021-10-13 21:09:37,401 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-13 21:09:37,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 413 treesize of output 391 [2021-10-13 21:09:44,170 INFO L354 Elim1Store]: treesize reduction 120, result has 35.5 percent of original size [2021-10-13 21:09:44,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 135 [2021-10-13 21:10:18,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:10:18,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:10:19,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:10:19,073 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:10:19,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281650415] [2021-10-13 21:10:19,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281650415] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:10:19,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:10:19,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 21:10:19,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993738416] [2021-10-13 21:10:19,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:10:19,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:10:19,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:10:19,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=17, Unknown=1, NotChecked=0, Total=30 [2021-10-13 21:10:19,075 INFO L87 Difference]: Start difference. First operand 2133 states and 9065 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2021-10-13 21:10:27,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:10:27,888 INFO L93 Difference]: Finished difference Result 1732 states and 7062 transitions. [2021-10-13 21:10:27,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:10:27,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 21:10:27,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:10:27,910 INFO L225 Difference]: With dead ends: 1732 [2021-10-13 21:10:27,910 INFO L226 Difference]: Without dead ends: 1732 [2021-10-13 21:10:27,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2284.4ms TimeCoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-13 21:10:27,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2021-10-13 21:10:27,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1732. [2021-10-13 21:10:27,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1493 states have (on average 4.73007367716008) internal successors, (7062), 1731 states have internal predecessors, (7062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:10:27,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 7062 transitions. [2021-10-13 21:10:27,991 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 7062 transitions. Word has length 3 [2021-10-13 21:10:27,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:10:27,991 INFO L470 AbstractCegarLoop]: Abstraction has 1732 states and 7062 transitions. [2021-10-13 21:10:27,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2021-10-13 21:10:27,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 7062 transitions. [2021-10-13 21:10:27,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 21:10:27,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:10:27,992 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-13 21:10:28,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 21:10:28,204 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 [2021-10-13 21:10:28,205 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:10:28,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:10:28,207 INFO L82 PathProgramCache]: Analyzing trace with hash 34032059, now seen corresponding path program 1 times [2021-10-13 21:10:28,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:10:28,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561044081] [2021-10-13 21:10:28,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:10:28,208 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:10:28,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:10:28,209 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) [2021-10-13 21:10:28,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 21:10:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:10:28,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 21:10:28,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:10:28,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:10:28,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:10:28,671 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 21:10:28,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-13 21:10:28,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:10:28,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:10:29,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:10:29,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:10:29,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561044081] [2021-10-13 21:10:29,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561044081] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:10:29,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:10:29,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-13 21:10:29,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349000419] [2021-10-13 21:10:29,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 21:10:29,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:10:29,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 21:10:29,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 21:10:29,250 INFO L87 Difference]: Start difference. First operand 1732 states and 7062 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) [2021-10-13 21:10:35,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:10:35,066 INFO L93 Difference]: Finished difference Result 8631 states and 35264 transitions. [2021-10-13 21:10:35,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 21:10:35,068 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 [2021-10-13 21:10:35,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:10:35,139 INFO L225 Difference]: With dead ends: 8631 [2021-10-13 21:10:35,139 INFO L226 Difference]: Without dead ends: 8631 [2021-10-13 21:10:35,140 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 776.6ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-13 21:10:35,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8631 states. [2021-10-13 21:10:35,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8631 to 1739. [2021-10-13 21:10:35,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1500 states have (on average 4.717333333333333) internal successors, (7076), 1738 states have internal predecessors, (7076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:10:35,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 7076 transitions. [2021-10-13 21:10:35,387 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 7076 transitions. Word has length 4 [2021-10-13 21:10:35,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:10:35,388 INFO L470 AbstractCegarLoop]: Abstraction has 1739 states and 7076 transitions. [2021-10-13 21:10:35,388 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) [2021-10-13 21:10:35,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 7076 transitions. [2021-10-13 21:10:35,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 21:10:35,389 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:10:35,389 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 21:10:35,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 21:10:35,602 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 [2021-10-13 21:10:35,603 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:10:35,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:10:35,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1056247595, now seen corresponding path program 1 times [2021-10-13 21:10:35,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:10:35,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752806966] [2021-10-13 21:10:35,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:10:35,605 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:10:35,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:10:35,607 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) [2021-10-13 21:10:35,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 21:10:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:10:35,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 21:10:35,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:10:36,126 INFO L354 Elim1Store]: treesize reduction 510, result has 12.5 percent of original size [2021-10-13 21:10:36,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 339 treesize of output 377 [2021-10-13 21:10:41,948 INFO L354 Elim1Store]: treesize reduction 242, result has 35.8 percent of original size [2021-10-13 21:10:41,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 136 treesize of output 253 [2021-10-13 21:11:04,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:11:04,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:11:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:11:04,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:11:04,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752806966] [2021-10-13 21:11:04,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752806966] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:11:04,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:11:04,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 1] imperfect sequences [] total 3 [2021-10-13 21:11:04,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802745522] [2021-10-13 21:11:04,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 21:11:04,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:11:04,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 21:11:04,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=0, Total=20 [2021-10-13 21:11:04,549 INFO L87 Difference]: Start difference. First operand 1739 states and 7076 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:11:17,157 WARN L207 SmtUtils]: Spent 8.08 s on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2021-10-13 21:11:21,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:11:21,972 INFO L93 Difference]: Finished difference Result 1635 states and 6668 transitions. [2021-10-13 21:11:21,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:11:21,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 21:11:21,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:11:21,986 INFO L225 Difference]: With dead ends: 1635 [2021-10-13 21:11:21,986 INFO L226 Difference]: Without dead ends: 1635 [2021-10-13 21:11:21,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16213.4ms TimeCoverageRelationStatistics Valid=14, Invalid=12, Unknown=4, NotChecked=0, Total=30 [2021-10-13 21:11:21,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2021-10-13 21:11:22,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1635. [2021-10-13 21:11:22,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1426 states have (on average 4.67601683029453) internal successors, (6668), 1634 states have internal predecessors, (6668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:11:22,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 6668 transitions. [2021-10-13 21:11:22,063 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 6668 transitions. Word has length 5 [2021-10-13 21:11:22,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:11:22,064 INFO L470 AbstractCegarLoop]: Abstraction has 1635 states and 6668 transitions. [2021-10-13 21:11:22,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:11:22,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 6668 transitions. [2021-10-13 21:11:22,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 21:11:22,065 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:11:22,065 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 21:11:22,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 21:11:22,278 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 [2021-10-13 21:11:22,279 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:11:22,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:11:22,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1056247515, now seen corresponding path program 1 times [2021-10-13 21:11:22,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:11:22,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733006737] [2021-10-13 21:11:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:11:22,281 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:11:22,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:11:22,282 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) [2021-10-13 21:11:22,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 21:11:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:11:22,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 21:11:22,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:11:22,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:11:22,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:11:22,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:11:22,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:11:22,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733006737] [2021-10-13 21:11:22,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733006737] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:11:22,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:11:22,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 21:11:22,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569457007] [2021-10-13 21:11:22,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:11:22,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:11:22,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:11:22,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 21:11:22,511 INFO L87 Difference]: Start difference. First operand 1635 states and 6668 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-10-13 21:11:22,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:11:22,752 INFO L93 Difference]: Finished difference Result 2279 states and 8817 transitions. [2021-10-13 21:11:22,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 21:11:22,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2021-10-13 21:11:22,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:11:22,766 INFO L225 Difference]: With dead ends: 2279 [2021-10-13 21:11:22,767 INFO L226 Difference]: Without dead ends: 2278 [2021-10-13 21:11:22,767 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.7ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 21:11:22,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2021-10-13 21:11:22,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 2110. [2021-10-13 21:11:22,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2110 states, 1872 states have (on average 4.493589743589744) internal successors, (8412), 2109 states have internal predecessors, (8412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:11:22,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 8412 transitions. [2021-10-13 21:11:22,860 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 8412 transitions. Word has length 5 [2021-10-13 21:11:22,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:11:22,860 INFO L470 AbstractCegarLoop]: Abstraction has 2110 states and 8412 transitions. [2021-10-13 21:11:22,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-10-13 21:11:22,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 8412 transitions. [2021-10-13 21:11:22,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 21:11:22,861 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:11:22,861 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 21:11:22,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 21:11:23,076 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 [2021-10-13 21:11:23,077 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:11:23,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:11:23,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1056247597, now seen corresponding path program 1 times [2021-10-13 21:11:23,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:11:23,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237178406] [2021-10-13 21:11:23,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:11:23,079 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:11:23,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:11:23,081 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) [2021-10-13 21:11:23,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 21:11:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:11:23,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 21:11:23,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:11:23,754 INFO L354 Elim1Store]: treesize reduction 361, result has 15.5 percent of original size [2021-10-13 21:11:23,755 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 6 case distinctions, treesize of input 78 treesize of output 124 [2021-10-13 21:11:23,770 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 21:11:23,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 958 treesize of output 892 [2021-10-13 21:11:32,874 INFO L354 Elim1Store]: treesize reduction 120, result has 35.5 percent of original size [2021-10-13 21:11:32,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 77 treesize of output 131 [2021-10-13 21:12:28,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:12:28,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:12:28,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:12:28,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:12:28,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237178406] [2021-10-13 21:12:28,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237178406] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:12:28,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:12:28,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 21:12:28,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237449877] [2021-10-13 21:12:28,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:12:28,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:12:28,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:12:28,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=17, Unknown=1, NotChecked=0, Total=30 [2021-10-13 21:12:28,833 INFO L87 Difference]: Start difference. First operand 2110 states and 8412 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-10-13 21:12:41,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:12:41,031 INFO L93 Difference]: Finished difference Result 1965 states and 7841 transitions. [2021-10-13 21:12:41,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:12:41,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2021-10-13 21:12:41,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:12:41,047 INFO L225 Difference]: With dead ends: 1965 [2021-10-13 21:12:41,048 INFO L226 Difference]: Without dead ends: 1965 [2021-10-13 21:12:41,048 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2294.9ms TimeCoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-13 21:12:41,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2021-10-13 21:12:41,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1965. [2021-10-13 21:12:41,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1766 states have (on average 4.439977349943375) internal successors, (7841), 1964 states have internal predecessors, (7841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:12:41,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7841 transitions. [2021-10-13 21:12:41,130 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7841 transitions. Word has length 5 [2021-10-13 21:12:41,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:12:41,131 INFO L470 AbstractCegarLoop]: Abstraction has 1965 states and 7841 transitions. [2021-10-13 21:12:41,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-10-13 21:12:41,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7841 transitions. [2021-10-13 21:12:41,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 21:12:41,132 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:12:41,132 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 21:12:41,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 21:12:41,345 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 [2021-10-13 21:12:41,345 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:12:41,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:12:41,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1653502662, now seen corresponding path program 1 times [2021-10-13 21:12:41,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:12:41,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512410330] [2021-10-13 21:12:41,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:12:41,349 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:12:41,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:12:41,350 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) [2021-10-13 21:12:41,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 21:12:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:12:41,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 21:12:41,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:12:41,872 INFO L354 Elim1Store]: treesize reduction 499, result has 13.2 percent of original size [2021-10-13 21:12:41,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 81 [2021-10-13 21:12:42,645 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 21:12:42,645 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 1 case distinctions, treesize of input 16 treesize of output 21 [2021-10-13 21:12:42,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 21:12:42,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:12:42,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 21:12:42,724 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:12:42,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512410330] [2021-10-13 21:12:42,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512410330] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:12:42,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:12:42,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 3 [2021-10-13 21:12:42,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680389773] [2021-10-13 21:12:42,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 21:12:42,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:12:42,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 21:12:42,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 21:12:42,727 INFO L87 Difference]: Start difference. First operand 1965 states and 7841 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-10-13 21:12:42,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:12:42,978 INFO L93 Difference]: Finished difference Result 1439 states and 5617 transitions. [2021-10-13 21:12:42,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:12:42,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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 6 [2021-10-13 21:12:42,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:12:42,986 INFO L225 Difference]: With dead ends: 1439 [2021-10-13 21:12:42,986 INFO L226 Difference]: Without dead ends: 1439 [2021-10-13 21:12:42,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 21:12:42,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2021-10-13 21:12:43,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1439. [2021-10-13 21:12:43,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1327 states have (on average 4.232856066314996) internal successors, (5617), 1438 states have internal predecessors, (5617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:12:43,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 5617 transitions. [2021-10-13 21:12:43,039 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 5617 transitions. Word has length 6 [2021-10-13 21:12:43,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:12:43,040 INFO L470 AbstractCegarLoop]: Abstraction has 1439 states and 5617 transitions. [2021-10-13 21:12:43,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-10-13 21:12:43,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 5617 transitions. [2021-10-13 21:12:43,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 21:12:43,041 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:12:43,041 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 21:12:43,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 21:12:43,255 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 [2021-10-13 21:12:43,255 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:12:43,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:12:43,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1653502660, now seen corresponding path program 1 times [2021-10-13 21:12:43,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:12:43,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928794222] [2021-10-13 21:12:43,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:12:43,256 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:12:43,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:12:43,257 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) [2021-10-13 21:12:43,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 21:12:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:12:43,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 21:12:43,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:12:43,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:12:43,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:12:43,825 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 21:12:43,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 116 [2021-10-13 21:12:44,260 INFO L354 Elim1Store]: treesize reduction 499, result has 13.2 percent of original size [2021-10-13 21:12:44,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 116 treesize of output 169 [2021-10-13 21:13:03,070 INFO L354 Elim1Store]: treesize reduction 56, result has 36.4 percent of original size [2021-10-13 21:13:03,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 109 [2021-10-13 21:13:03,151 INFO L354 Elim1Store]: treesize reduction -11, result has 122.4 percent of original size [2021-10-13 21:13:03,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 109 treesize of output 160 [2021-10-13 21:13:12,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:13:12,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:13:14,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:13:14,366 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:13:14,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928794222] [2021-10-13 21:13:14,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928794222] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:13:14,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:13:14,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 7 [2021-10-13 21:13:14,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619644794] [2021-10-13 21:13:14,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 21:13:14,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:13:14,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 21:13:14,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-13 21:13:14,368 INFO L87 Difference]: Start difference. First operand 1439 states and 5617 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:13:35,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:13:35,137 INFO L93 Difference]: Finished difference Result 3752 states and 14366 transitions. [2021-10-13 21:13:35,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 21:13:35,139 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 21:13:35,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:13:35,161 INFO L225 Difference]: With dead ends: 3752 [2021-10-13 21:13:35,161 INFO L226 Difference]: Without dead ends: 3752 [2021-10-13 21:13:35,162 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 13088.5ms TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-10-13 21:13:35,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2021-10-13 21:13:35,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 1874. [2021-10-13 21:13:35,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1874 states, 1762 states have (on average 4.290011350737798) internal successors, (7559), 1873 states have internal predecessors, (7559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:13:35,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1874 states to 1874 states and 7559 transitions. [2021-10-13 21:13:35,291 INFO L78 Accepts]: Start accepts. Automaton has 1874 states and 7559 transitions. Word has length 6 [2021-10-13 21:13:35,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:13:35,291 INFO L470 AbstractCegarLoop]: Abstraction has 1874 states and 7559 transitions. [2021-10-13 21:13:35,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:13:35,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 7559 transitions. [2021-10-13 21:13:35,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 21:13:35,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:13:35,293 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:13:35,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 21:13:35,506 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 [2021-10-13 21:13:35,507 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:13:35,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:13:35,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1441684845, now seen corresponding path program 1 times [2021-10-13 21:13:35,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:13:35,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32294435] [2021-10-13 21:13:35,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:13:35,510 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:13:35,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:13:35,511 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) [2021-10-13 21:13:35,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 21:13:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:13:35,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 21:13:35,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:13:35,664 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 21:13:35,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:13:35,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:13:35,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:13:35,728 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:13:35,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32294435] [2021-10-13 21:13:35,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32294435] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:13:35,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:13:35,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 21:13:35,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408060044] [2021-10-13 21:13:35,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:13:35,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:13:35,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:13:35,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:13:35,731 INFO L87 Difference]: Start difference. First operand 1874 states and 7559 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:13:35,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:13:35,946 INFO L93 Difference]: Finished difference Result 1246 states and 4931 transitions. [2021-10-13 21:13:35,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:13:35,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have 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 [2021-10-13 21:13:35,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:13:35,951 INFO L225 Difference]: With dead ends: 1246 [2021-10-13 21:13:35,951 INFO L226 Difference]: Without dead ends: 1246 [2021-10-13 21:13:35,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 21:13:35,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2021-10-13 21:13:35,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1246. [2021-10-13 21:13:35,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 1181 states have (on average 4.175275190516511) internal successors, (4931), 1245 states have internal predecessors, (4931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:13:36,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 4931 transitions. [2021-10-13 21:13:36,006 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 4931 transitions. Word has length 7 [2021-10-13 21:13:36,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:13:36,007 INFO L470 AbstractCegarLoop]: Abstraction has 1246 states and 4931 transitions. [2021-10-13 21:13:36,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:13:36,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 4931 transitions. [2021-10-13 21:13:36,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 21:13:36,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:13:36,008 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:13:36,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-13 21:13:36,223 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 [2021-10-13 21:13:36,224 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:13:36,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:13:36,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1441684846, now seen corresponding path program 1 times [2021-10-13 21:13:36,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:13:36,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35407211] [2021-10-13 21:13:36,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:13:36,226 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:13:36,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:13:36,227 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:13:36,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 21:13:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:13:36,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 21:13:36,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:13:36,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:13:36,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:13:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:13:36,535 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:13:36,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35407211] [2021-10-13 21:13:36,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35407211] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:13:36,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:13:36,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 21:13:36,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665900048] [2021-10-13 21:13:36,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:13:36,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:13:36,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:13:36,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 21:13:36,540 INFO L87 Difference]: Start difference. First operand 1246 states and 4931 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:13:36,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:13:36,785 INFO L93 Difference]: Finished difference Result 1956 states and 7255 transitions. [2021-10-13 21:13:36,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 21:13:36,788 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have 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 [2021-10-13 21:13:36,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:13:36,795 INFO L225 Difference]: With dead ends: 1956 [2021-10-13 21:13:36,795 INFO L226 Difference]: Without dead ends: 1953 [2021-10-13 21:13:36,796 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 85.4ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-13 21:13:36,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2021-10-13 21:13:36,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 1802. [2021-10-13 21:13:36,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1802 states, 1726 states have (on average 4.018539976825029) internal successors, (6936), 1801 states have internal predecessors, (6936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:13:36,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 6936 transitions. [2021-10-13 21:13:36,867 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 6936 transitions. Word has length 7 [2021-10-13 21:13:36,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:13:36,868 INFO L470 AbstractCegarLoop]: Abstraction has 1802 states and 6936 transitions. [2021-10-13 21:13:36,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:13:36,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 6936 transitions. [2021-10-13 21:13:36,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 21:13:36,869 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:13:36,869 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:13:36,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 21:13:37,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:13:37,085 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:13:37,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:13:37,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1441684945, now seen corresponding path program 1 times [2021-10-13 21:13:37,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:13:37,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644406511] [2021-10-13 21:13:37,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:13:37,088 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:13:37,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:13:37,089 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:13:37,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 21:13:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:13:37,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 21:13:37,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:13:37,783 INFO L354 Elim1Store]: treesize reduction 502, result has 12.7 percent of original size [2021-10-13 21:13:37,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 824 treesize of output 842 [2021-10-13 21:13:42,693 INFO L354 Elim1Store]: treesize reduction 242, result has 35.8 percent of original size [2021-10-13 21:13:42,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 124 treesize of output 241 [2021-10-13 21:17:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:17:28,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:17:28,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:17:28,354 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:17:28,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644406511] [2021-10-13 21:17:28,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644406511] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:17:28,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:17:28,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 1] imperfect sequences [] total 4 [2021-10-13 21:17:28,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74174563] [2021-10-13 21:17:28,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:17:28,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:17:28,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:17:28,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=12, Unknown=6, NotChecked=0, Total=30 [2021-10-13 21:17:28,356 INFO L87 Difference]: Start difference. First operand 1802 states and 6936 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:17:41,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:17:41,030 INFO L93 Difference]: Finished difference Result 1734 states and 6707 transitions. [2021-10-13 21:17:41,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:17:41,031 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 21:17:41,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:17:41,037 INFO L225 Difference]: With dead ends: 1734 [2021-10-13 21:17:41,037 INFO L226 Difference]: Without dead ends: 1734 [2021-10-13 21:17:41,038 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22971.0ms TimeCoverageRelationStatistics Valid=18, Invalid=15, Unknown=9, NotChecked=0, Total=42 [2021-10-13 21:17:41,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2021-10-13 21:17:41,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1734. [2021-10-13 21:17:41,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1671 states have (on average 4.01376421304608) internal successors, (6707), 1733 states have internal predecessors, (6707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:17:41,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 6707 transitions. [2021-10-13 21:17:41,096 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 6707 transitions. Word has length 7 [2021-10-13 21:17:41,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:17:41,097 INFO L470 AbstractCegarLoop]: Abstraction has 1734 states and 6707 transitions. [2021-10-13 21:17:41,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:17:41,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 6707 transitions. [2021-10-13 21:17:41,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 21:17:41,098 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:17:41,098 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:17:41,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 21:17:41,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:17:41,311 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:17:41,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:17:41,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1441684946, now seen corresponding path program 1 times [2021-10-13 21:17:41,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:17:41,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203384700] [2021-10-13 21:17:41,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:17:41,315 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:17:41,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:17:41,316 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:17:41,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 21:17:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:17:41,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 21:17:41,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:17:42,046 INFO L354 Elim1Store]: treesize reduction 355, result has 16.9 percent of original size [2021-10-13 21:17:42,046 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 6 case distinctions, treesize of input 58 treesize of output 110 [2021-10-13 21:17:42,057 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 916 treesize of output 884 [2021-10-13 21:17:48,783 INFO L354 Elim1Store]: treesize reduction 120, result has 35.5 percent of original size [2021-10-13 21:17:48,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 69 treesize of output 123 [2021-10-13 21:19:07,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:19:07,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:19:08,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:19:08,778 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:19:08,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203384700] [2021-10-13 21:19:08,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203384700] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:19:08,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:19:08,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 21:19:08,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109574154] [2021-10-13 21:19:08,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:19:08,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:19:08,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:19:08,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=17, Unknown=1, NotChecked=0, Total=30 [2021-10-13 21:19:08,780 INFO L87 Difference]: Start difference. First operand 1734 states and 6707 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:19:18,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:19:18,877 INFO L93 Difference]: Finished difference Result 1666 states and 6478 transitions. [2021-10-13 21:19:18,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:19:18,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 21:19:18,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:19:18,885 INFO L225 Difference]: With dead ends: 1666 [2021-10-13 21:19:18,885 INFO L226 Difference]: Without dead ends: 1623 [2021-10-13 21:19:18,886 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3126.7ms TimeCoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-13 21:19:18,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2021-10-13 21:19:18,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1623. [2021-10-13 21:19:18,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1573 states have (on average 4.022250476795931) internal successors, (6327), 1622 states have internal predecessors, (6327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:19:18,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 6327 transitions. [2021-10-13 21:19:18,934 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 6327 transitions. Word has length 7 [2021-10-13 21:19:18,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:19:18,934 INFO L470 AbstractCegarLoop]: Abstraction has 1623 states and 6327 transitions. [2021-10-13 21:19:18,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:19:18,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 6327 transitions. [2021-10-13 21:19:18,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 21:19:18,935 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:19:18,935 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2021-10-13 21:19:18,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-13 21:19:19,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:19:19,149 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:19:19,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:19:19,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1246348093, now seen corresponding path program 1 times [2021-10-13 21:19:19,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:19:19,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546581653] [2021-10-13 21:19:19,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:19:19,151 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:19:19,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:19:19,153 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:19:19,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 21:19:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:19:19,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:19:19,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:19:19,369 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 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-13 21:19:19,753 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:19:19,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:19:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:19:21,596 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:19:21,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546581653] [2021-10-13 21:19:21,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546581653] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:19:21,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:19:21,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 21:19:21,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467311337] [2021-10-13 21:19:21,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 21:19:21,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:19:21,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 21:19:21,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-10-13 21:19:21,598 INFO L87 Difference]: Start difference. First operand 1623 states and 6327 transitions. Second operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:19:42,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:19:42,644 INFO L93 Difference]: Finished difference Result 11816 states and 47492 transitions. [2021-10-13 21:19:42,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 21:19:42,647 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 21:19:42,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:19:42,707 INFO L225 Difference]: With dead ends: 11816 [2021-10-13 21:19:42,707 INFO L226 Difference]: Without dead ends: 11816 [2021-10-13 21:19:42,707 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 6662.3ms TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2021-10-13 21:19:42,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11816 states. [2021-10-13 21:19:42,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11816 to 1645. [2021-10-13 21:19:42,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1595 states have (on average 3.99435736677116) internal successors, (6371), 1644 states have internal predecessors, (6371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:19:42,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 6371 transitions. [2021-10-13 21:19:42,942 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 6371 transitions. Word has length 8 [2021-10-13 21:19:42,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:19:42,942 INFO L470 AbstractCegarLoop]: Abstraction has 1645 states and 6371 transitions. [2021-10-13 21:19:42,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:19:42,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 6371 transitions. [2021-10-13 21:19:42,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 21:19:42,943 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:19:42,943 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:19:42,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 21:19:43,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:19:43,157 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:19:43,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:19:43,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1262354997, now seen corresponding path program 1 times [2021-10-13 21:19:43,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:19:43,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512090930] [2021-10-13 21:19:43,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:19:43,159 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:19:43,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:19:43,160 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:19:43,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 21:19:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:19:43,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 21:19:43,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:19:43,396 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 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-13 21:19:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:19:43,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:19:44,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:19:44,738 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:19:44,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512090930] [2021-10-13 21:19:44,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512090930] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:19:44,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:19:44,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-13 21:19:44,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956857064] [2021-10-13 21:19:44,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 21:19:44,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:19:44,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 21:19:44,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 21:19:44,741 INFO L87 Difference]: Start difference. First operand 1645 states and 6371 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:19:48,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:19:48,652 INFO L93 Difference]: Finished difference Result 3033 states and 11669 transitions. [2021-10-13 21:19:48,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 21:19:48,654 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 21:19:48,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:19:48,665 INFO L225 Difference]: With dead ends: 3033 [2021-10-13 21:19:48,665 INFO L226 Difference]: Without dead ends: 2957 [2021-10-13 21:19:48,666 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1677.5ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-13 21:19:48,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2021-10-13 21:19:48,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 2122. [2021-10-13 21:19:48,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2072 states have (on average 4.096042471042471) internal successors, (8487), 2121 states have internal predecessors, (8487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:19:48,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 8487 transitions. [2021-10-13 21:19:48,769 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 8487 transitions. Word has length 8 [2021-10-13 21:19:48,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:19:48,770 INFO L470 AbstractCegarLoop]: Abstraction has 2122 states and 8487 transitions. [2021-10-13 21:19:48,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:19:48,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 8487 transitions. [2021-10-13 21:19:48,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 21:19:48,776 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:19:48,776 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:19:48,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 21:19:48,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:19:48,991 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:19:48,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:19:48,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1815178456, now seen corresponding path program 1 times [2021-10-13 21:19:48,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:19:48,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886145073] [2021-10-13 21:19:48,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:19:48,993 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:19:48,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:19:48,995 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:19:48,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 21:19:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:19:49,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 21:19:49,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:19:49,800 INFO L354 Elim1Store]: treesize reduction 367, result has 14.1 percent of original size [2021-10-13 21:19:49,800 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 6 case distinctions, treesize of input 57 treesize of output 97 [2021-10-13 21:19:49,817 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 356 treesize of output 352 [2021-10-13 21:19:51,869 INFO L354 Elim1Store]: treesize reduction 144, result has 22.6 percent of original size [2021-10-13 21:19:51,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 88 [2021-10-13 21:20:27,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:20:27,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:20:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:20:27,971 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:20:27,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886145073] [2021-10-13 21:20:27,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886145073] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:20:27,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:20:27,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 21:20:27,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057298228] [2021-10-13 21:20:27,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:20:27,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:20:27,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:20:27,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 21:20:27,973 INFO L87 Difference]: Start difference. First operand 2122 states and 8487 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:20:30,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:20:30,630 INFO L93 Difference]: Finished difference Result 2004 states and 7971 transitions. [2021-10-13 21:20:30,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:20:30,632 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 21:20:30,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:20:30,640 INFO L225 Difference]: With dead ends: 2004 [2021-10-13 21:20:30,640 INFO L226 Difference]: Without dead ends: 2004 [2021-10-13 21:20:30,640 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 904.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 21:20:30,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2021-10-13 21:20:30,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 2004. [2021-10-13 21:20:30,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2004 states, 1967 states have (on average 4.052364006100661) internal successors, (7971), 2003 states have internal predecessors, (7971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:20:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2004 states to 2004 states and 7971 transitions. [2021-10-13 21:20:30,704 INFO L78 Accepts]: Start accepts. Automaton has 2004 states and 7971 transitions. Word has length 9 [2021-10-13 21:20:30,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:20:30,704 INFO L470 AbstractCegarLoop]: Abstraction has 2004 states and 7971 transitions. [2021-10-13 21:20:30,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:20:30,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2004 states and 7971 transitions. [2021-10-13 21:20:30,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 21:20:30,706 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:20:30,706 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:20:30,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 21:20:30,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:20:30,920 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:20:30,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:20:30,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1815178454, now seen corresponding path program 1 times [2021-10-13 21:20:30,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:20:30,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089858342] [2021-10-13 21:20:30,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:20:30,922 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:20:30,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:20:30,924 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:20:30,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 21:20:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:20:31,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 21:20:31,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:20:31,753 INFO L354 Elim1Store]: treesize reduction 499, result has 13.2 percent of original size [2021-10-13 21:20:31,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 2422 treesize of output 2347 [2021-10-13 21:20:37,335 INFO L354 Elim1Store]: treesize reduction 231, result has 38.7 percent of original size [2021-10-13 21:20:37,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 126 treesize of output 254 [2021-10-13 21:21:05,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:05,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:21:05,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:05,096 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:21:05,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089858342] [2021-10-13 21:21:05,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089858342] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:21:05,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:21:05,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 21:21:05,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780432140] [2021-10-13 21:21:05,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:21:05,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:21:05,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:21:05,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:21:05,098 INFO L87 Difference]: Start difference. First operand 2004 states and 7971 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:05,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:21:05,283 INFO L93 Difference]: Finished difference Result 1886 states and 7455 transitions. [2021-10-13 21:21:05,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:21:05,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 21:21:05,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:21:05,291 INFO L225 Difference]: With dead ends: 1886 [2021-10-13 21:21:05,291 INFO L226 Difference]: Without dead ends: 1819 [2021-10-13 21:21:05,292 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2075.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:21:05,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2021-10-13 21:21:05,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1819. [2021-10-13 21:21:05,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1795 states have (on average 4.014484679665738) internal successors, (7206), 1818 states have internal predecessors, (7206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:05,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 7206 transitions. [2021-10-13 21:21:05,355 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 7206 transitions. Word has length 9 [2021-10-13 21:21:05,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:21:05,356 INFO L470 AbstractCegarLoop]: Abstraction has 1819 states and 7206 transitions. [2021-10-13 21:21:05,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:05,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 7206 transitions. [2021-10-13 21:21:05,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 21:21:05,357 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:21:05,357 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2021-10-13 21:21:05,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 21:21:05,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:21:05,577 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:21:05,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:21:05,580 INFO L82 PathProgramCache]: Analyzing trace with hash 961621661, now seen corresponding path program 2 times [2021-10-13 21:21:05,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:21:05,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238867915] [2021-10-13 21:21:05,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:21:05,580 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:21:05,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:21:05,583 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:21:05,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 21:21:05,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:21:05,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:21:05,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 21:21:05,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:21:05,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:21:05,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:21:06,388 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 21:21:06,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 116 [2021-10-13 21:21:06,845 INFO L354 Elim1Store]: treesize reduction 499, result has 13.2 percent of original size [2021-10-13 21:21:06,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 116 treesize of output 169 Received shutdown request... [2021-10-13 21:21:11,297 WARN L223 SmtUtils]: Removed 1 from assertion stack [2021-10-13 21:21:11,299 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-13 21:21:11,302 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 21:21:11,302 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 21:21:11,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 21:21:11,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:21:11,500 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. [2021-10-13 21:21:11,503 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-13 21:21:11,503 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-13 21:21:11,503 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-13 21:21:11,503 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-13 21:21:11,504 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-13 21:21:11,504 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-13 21:21:11,504 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 21:21:11,504 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 21:21:11,505 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 21:21:11,505 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 21:21:11,506 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 21:21:11,506 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 21:21:11,506 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 21:21:11,506 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 21:21:11,506 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 21:21:11,506 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-13 21:21:11,507 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-13 21:21:11,507 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-13 21:21:11,507 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-13 21:21:11,507 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-13 21:21:11,507 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-13 21:21:11,507 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-13 21:21:11,507 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-13 21:21:11,507 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-13 21:21:11,507 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-13 21:21:11,508 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-13 21:21:11,508 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 21:21:11,508 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 21:21:11,508 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 21:21:11,508 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 21:21:11,508 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 21:21:11,508 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-13 21:21:11,509 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0REQUIRES_VIOLATION [2021-10-13 21:21:11,509 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1REQUIRES_VIOLATION [2021-10-13 21:21:11,509 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-13 21:21:11,509 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-13 21:21:11,509 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-13 21:21:11,509 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-13 21:21:11,509 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-13 21:21:11,509 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0REQUIRES_VIOLATION [2021-10-13 21:21:11,510 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1REQUIRES_VIOLATION [2021-10-13 21:21:11,517 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 21:21:11,517 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 21:21:11,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:21:11 BasicIcfg [2021-10-13 21:21:11,520 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 21:21:11,521 INFO L168 Benchmark]: Toolchain (without parser) took 813173.41 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 136.3 MB in the beginning and 32.7 MB in the end (delta: 103.6 MB). Peak memory consumption was 157.2 MB. Max. memory is 8.0 GB. [2021-10-13 21:21:11,521 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 161.5 MB. Free memory is still 134.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 21:21:11,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 511.71 ms. Allocated memory is still 161.5 MB. Free memory was 136.0 MB in the beginning and 121.0 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-13 21:21:11,521 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.94 ms. Allocated memory is still 161.5 MB. Free memory was 121.0 MB in the beginning and 118.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 21:21:11,522 INFO L168 Benchmark]: Boogie Preprocessor took 79.90 ms. Allocated memory is still 161.5 MB. Free memory was 118.5 MB in the beginning and 116.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 21:21:11,522 INFO L168 Benchmark]: RCFGBuilder took 2331.39 ms. Allocated memory is still 161.5 MB. Free memory was 116.1 MB in the beginning and 115.4 MB in the end (delta: 729.5 kB). Peak memory consumption was 33.0 MB. Max. memory is 8.0 GB. [2021-10-13 21:21:11,522 INFO L168 Benchmark]: TraceAbstraction took 810169.29 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 114.8 MB in the beginning and 32.7 MB in the end (delta: 82.1 MB). Peak memory consumption was 134.7 MB. Max. memory is 8.0 GB. [2021-10-13 21:21:11,524 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 161.5 MB. Free memory is still 134.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 511.71 ms. Allocated memory is still 161.5 MB. Free memory was 136.0 MB in the beginning and 121.0 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 66.94 ms. Allocated memory is still 161.5 MB. Free memory was 121.0 MB in the beginning and 118.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 79.90 ms. Allocated memory is still 161.5 MB. Free memory was 118.5 MB in the beginning and 116.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2331.39 ms. Allocated memory is still 161.5 MB. Free memory was 116.1 MB in the beginning and 115.4 MB in the end (delta: 729.5 kB). Peak memory consumption was 33.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 810169.29 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 114.8 MB in the beginning and 32.7 MB in the end (delta: 82.1 MB). Peak memory consumption was 134.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35049.8ms, 220 PlacesBefore, 72 PlacesAfterwards, 225 TransitionsBefore, 65 TransitionsAfterwards, 2336 CoEnabledTransitionPairs, 8 FixpointIterations, 140 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 8 ConcurrentYvCompositions, 12 ChoiceCompositions, 232 TotalNumberOfCompositions, 5152 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4166, positive: 4076, positive conditional: 0, positive unconditional: 4076, negative: 90, negative conditional: 0, negative unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1449, positive: 1432, positive conditional: 0, positive unconditional: 1432, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1449, positive: 1426, positive conditional: 0, positive unconditional: 1426, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 23, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1678, positive: 1003, positive conditional: 0, positive unconditional: 1003, negative: 675, negative conditional: 0, negative unconditional: 675, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4166, positive: 2644, positive conditional: 0, positive unconditional: 2644, negative: 73, negative conditional: 0, negative unconditional: 73, unknown: 1449, unknown conditional: 0, unknown unconditional: 1449] , Statistics on independence cache: Total cache size (in pairs): 264, Positive cache size: 256, Positive conditional cache size: 0, Positive unconditional cache size: 256, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 137]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 137]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 137]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 137]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 3ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 240 locations, 42 error locations. Started 1 CEGAR loops. OverallTime: 810005.2ms, OverallIterations: 19, TraceHistogramMax: 5, EmptinessCheckTime: 40.5ms, AutomataDifference: 140528.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 35285.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 647 SDtfs, 3629 SDslu, 1363 SDs, 0 SdLazy, 2137 SolverSat, 182 SolverUnsat, 24 SolverUnknown, 0 SolverNotchecked, 83907.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 197 GetRequests, 87 SyntacticMatches, 8 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 88740.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2534occurred in iteration=2, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1975.2ms AutomataMinimizationTime, 18 MinimizatonAttempts, 22620 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 217.9ms SsaConstructionTime, 1041.8ms SatisfiabilityAnalysisTime, 619311.5ms InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 170 ConstructedInterpolants, 60 QuantifiedInterpolants, 7315 SizeOfPredicates, 140 NumberOfNonLiveVariables, 1466 ConjunctsInSsa, 164 ConjunctsInUnsatCore, 36 InterpolantComputations, 28 PerfectInterpolantSequences, 2/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown