/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-queue-add-3-nl.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 21:22:32,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 21:22:32,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 21:22:32,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 21:22:32,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 21:22:32,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 21:22:32,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 21:22:32,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 21:22:32,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 21:22:32,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 21:22:32,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 21:22:32,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 21:22:32,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 21:22:32,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 21:22:32,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 21:22:32,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 21:22:32,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 21:22:32,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 21:22:32,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 21:22:32,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 21:22:32,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 21:22:32,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 21:22:32,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 21:22:32,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 21:22:32,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-13 21:22:32,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 21:22:32,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 21:22:32,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 21:22:32,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 21:22:32,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 21:22:32,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 21:22:32,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 21:22:32,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 21:22:32,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 21:22:32,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 21:22:32,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 21:22:32,806 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 21:22:32,851 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 21:22:32,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 21:22:32,852 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 21:22:32,852 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 21:22:32,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 21:22:32,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 21:22:32,854 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 21:22:32,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 21:22:32,854 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 21:22:32,855 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 21:22:32,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 21:22:32,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 21:22:32,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 21:22:32,855 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 21:22:32,856 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 21:22:32,856 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 21:22:32,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 21:22:32,856 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 21:22:32,856 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 21:22:32,857 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 21:22:32,857 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 21:22:32,857 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 21:22:32,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 21:22:32,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 21:22:32,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 21:22:32,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 21:22:32,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 21:22:32,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 21:22:32,858 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 21:22:32,859 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 21:22:32,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 21:22:32,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 21:22:32,859 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 21:22:33,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 21:22:33,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 21:22:33,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 21:22:33,252 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 21:22:33,253 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 21:22:33,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2021-10-13 21:22:33,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80128b1c6/72796aa6dbad4378b32f3db69c330be8/FLAGf16e60b97 [2021-10-13 21:22:34,013 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 21:22:34,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2021-10-13 21:22:34,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80128b1c6/72796aa6dbad4378b32f3db69c330be8/FLAGf16e60b97 [2021-10-13 21:22:34,320 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80128b1c6/72796aa6dbad4378b32f3db69c330be8 [2021-10-13 21:22:34,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 21:22:34,336 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 21:22:34,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 21:22:34,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 21:22:34,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 21:22:34,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:22:34" (1/1) ... [2021-10-13 21:22:34,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b9cff76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:22:34, skipping insertion in model container [2021-10-13 21:22:34,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:22:34" (1/1) ... [2021-10-13 21:22:34,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 21:22:34,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 21:22:34,577 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-queue-add-3-nl.wvr.c[3615,3628] [2021-10-13 21:22:34,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 21:22:34,609 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 21:22:34,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 21:22:34,650 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-queue-add-3-nl.wvr.c[3615,3628] [2021-10-13 21:22:34,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 21:22:34,666 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 21:22:34,699 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-queue-add-3-nl.wvr.c[3615,3628] [2021-10-13 21:22:34,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 21:22:34,725 INFO L208 MainTranslator]: Completed translation [2021-10-13 21:22:34,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:22:34 WrapperNode [2021-10-13 21:22:34,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 21:22:34,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 21:22:34,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 21:22:34,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 21:22:34,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:22:34" (1/1) ... [2021-10-13 21:22:34,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:22:34" (1/1) ... [2021-10-13 21:22:34,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 21:22:34,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 21:22:34,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 21:22:34,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 21:22:34,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:22:34" (1/1) ... [2021-10-13 21:22:34,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:22:34" (1/1) ... [2021-10-13 21:22:34,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:22:34" (1/1) ... [2021-10-13 21:22:34,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:22:34" (1/1) ... [2021-10-13 21:22:34,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:22:34" (1/1) ... [2021-10-13 21:22:34,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:22:34" (1/1) ... [2021-10-13 21:22:34,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:22:34" (1/1) ... [2021-10-13 21:22:34,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 21:22:34,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 21:22:34,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 21:22:34,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 21:22:34,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:22:34" (1/1) ... [2021-10-13 21:22:34,901 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 21:22:34,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 21:22:34,928 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 21:22:34,936 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 21:22:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 21:22:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 21:22:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 21:22:34,994 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 21:22:34,994 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 21:22:34,994 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 21:22:34,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 21:22:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-13 21:22:34,997 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-13 21:22:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 21:22:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 21:22:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 21:22:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 21:22:34,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 21:22:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 21:22:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 21:22:35,000 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 21:22:36,757 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 21:22:36,758 INFO L299 CfgBuilder]: Removed 41 assume(true) statements. [2021-10-13 21:22:36,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:22:36 BoogieIcfgContainer [2021-10-13 21:22:36,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 21:22:36,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 21:22:36,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 21:22:36,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 21:22:36,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:22:34" (1/3) ... [2021-10-13 21:22:36,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d2dbb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:22:36, skipping insertion in model container [2021-10-13 21:22:36,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:22:34" (2/3) ... [2021-10-13 21:22:36,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d2dbb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:22:36, skipping insertion in model container [2021-10-13 21:22:36,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:22:36" (3/3) ... [2021-10-13 21:22:36,770 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2021-10-13 21:22:36,777 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 21:22:36,777 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2021-10-13 21:22:36,777 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 21:22:36,815 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,816 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,816 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,816 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,817 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,817 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,817 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,817 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,817 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,817 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,818 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,818 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,818 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,818 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,819 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,819 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,819 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,819 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,819 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,820 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,820 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,820 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,820 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,820 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,821 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,821 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,821 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,821 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,821 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,822 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,822 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,822 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,822 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,822 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,823 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,823 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,823 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,823 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,824 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,824 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,824 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,824 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,824 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,824 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,825 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,825 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,825 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,825 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,825 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,825 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,826 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,826 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,826 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,827 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,827 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,827 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,827 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,827 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,828 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,829 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,829 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,830 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,830 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,830 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,830 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,831 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,832 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,832 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,832 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,832 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,833 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,833 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,833 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,834 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,834 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,834 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,834 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,834 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,834 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,835 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,835 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,835 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,835 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,836 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,836 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,836 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,836 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,837 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,838 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,839 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,841 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,842 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,842 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,843 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,847 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,848 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,848 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,848 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,848 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,849 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,850 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,850 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,851 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,851 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,852 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,852 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,852 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,852 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,852 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,852 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,853 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,853 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,853 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,853 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,853 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,854 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,855 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,855 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,855 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,855 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,855 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,856 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,856 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,856 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,856 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,856 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,857 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,857 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,857 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,857 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,864 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,864 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,864 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,865 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,865 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,865 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,865 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,865 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,865 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,867 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,868 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,868 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,868 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,868 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,868 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,869 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,869 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,869 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,869 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,871 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,871 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,871 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,871 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,871 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,871 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,872 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:22:36,878 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-13 21:22:36,966 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 21:22:36,980 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 21:22:36,981 INFO L340 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2021-10-13 21:22:37,008 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 21:22:37,020 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 226 transitions, 476 flow [2021-10-13 21:22:37,024 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 226 transitions, 476 flow [2021-10-13 21:22:37,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 218 places, 226 transitions, 476 flow [2021-10-13 21:22:37,153 INFO L129 PetriNetUnfolder]: 18/223 cut-off events. [2021-10-13 21:22:37,153 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-13 21:22:37,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 223 events. 18/223 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 251 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 175. Up to 3 conditions per place. [2021-10-13 21:22:37,170 INFO L116 LiptonReduction]: Number of co-enabled transitions 3276 [2021-10-13 21:23:15,244 INFO L131 LiptonReduction]: Checked pairs total: 5037 [2021-10-13 21:23:15,244 INFO L133 LiptonReduction]: Total number of compositions: 247 [2021-10-13 21:23:15,257 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 59 transitions, 142 flow [2021-10-13 21:23:15,348 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1565 states, 1237 states have (on average 4.568310428455942) internal successors, (5651), 1564 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states 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 21:23:15,357 INFO L276 IsEmpty]: Start isEmpty. Operand has 1565 states, 1237 states have (on average 4.568310428455942) internal successors, (5651), 1564 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states 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 21:23:15,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 21:23:15,363 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:23:15,364 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 21:23:15,364 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:23:15,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:23:15,371 INFO L82 PathProgramCache]: Analyzing trace with hash 33129, now seen corresponding path program 1 times [2021-10-13 21:23:15,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:23:15,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751504630] [2021-10-13 21:23:15,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:23:15,387 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:23:15,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:23:15,393 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 21:23:15,425 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 21:23:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:23:15,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 21:23:15,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:23:15,901 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-13 21:23:15,902 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 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-13 21:23:16,594 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 21:23:16,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:23:16,601 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 21:23:16,602 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:23:16,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751504630] [2021-10-13 21:23:16,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751504630] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:23:16,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:23:16,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 21:23:16,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68858055] [2021-10-13 21:23:16,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 21:23:16,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:23:16,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 21:23:16,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 21:23:16,635 INFO L87 Difference]: Start difference. First operand has 1565 states, 1237 states have (on average 4.568310428455942) internal successors, (5651), 1564 states have internal predecessors, (5651), 0 states have call successors, (0), 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 21:23:16,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:23:16,923 INFO L93 Difference]: Finished difference Result 1562 states and 5460 transitions. [2021-10-13 21:23:16,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:23:16,926 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 21:23:16,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:23:16,965 INFO L225 Difference]: With dead ends: 1562 [2021-10-13 21:23:16,965 INFO L226 Difference]: Without dead ends: 1562 [2021-10-13 21:23:16,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 21:23:16,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-10-13 21:23:17,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1562. [2021-10-13 21:23:17,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1237 states have (on average 4.413904607922393) internal successors, (5460), 1561 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states 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 21:23:17,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 5460 transitions. [2021-10-13 21:23:17,148 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 5460 transitions. Word has length 2 [2021-10-13 21:23:17,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:23:17,151 INFO L470 AbstractCegarLoop]: Abstraction has 1562 states and 5460 transitions. [2021-10-13 21:23:17,151 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 21:23:17,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 5460 transitions. [2021-10-13 21:23:17,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 21:23:17,153 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:23:17,153 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 21:23:17,169 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 21:23:17,354 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 21:23:17,355 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:23:17,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:23:17,357 INFO L82 PathProgramCache]: Analyzing trace with hash 33130, now seen corresponding path program 1 times [2021-10-13 21:23:17,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:23:17,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628914985] [2021-10-13 21:23:17,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:23:17,358 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:23:17,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:23:17,359 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 21:23:17,392 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 21:23:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:23:17,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 21:23:17,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:23:17,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:23:17,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:23:17,741 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:23:17,742 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 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-13 21:23:17,840 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 21:23:17,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:23:17,954 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 21:23:17,954 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:23:17,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628914985] [2021-10-13 21:23:17,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628914985] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:23:17,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:23:17,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 21:23:17,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903137900] [2021-10-13 21:23:17,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:23:17,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:23:17,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:23:17,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:23:17,958 INFO L87 Difference]: Start difference. First operand 1562 states and 5460 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 21:23:18,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:23:18,820 INFO L93 Difference]: Finished difference Result 3123 states and 10923 transitions. [2021-10-13 21:23:18,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:23:18,822 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 21:23:18,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:23:18,859 INFO L225 Difference]: With dead ends: 3123 [2021-10-13 21:23:18,860 INFO L226 Difference]: Without dead ends: 3123 [2021-10-13 21:23:18,861 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:23:18,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3123 states. [2021-10-13 21:23:19,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3123 to 1566. [2021-10-13 21:23:19,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1566 states, 1241 states have (on average 4.409347300564061) internal successors, (5472), 1565 states have internal predecessors, (5472), 0 states have call successors, (0), 0 states 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 21:23:19,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 5472 transitions. [2021-10-13 21:23:19,023 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 5472 transitions. Word has length 2 [2021-10-13 21:23:19,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:23:19,024 INFO L470 AbstractCegarLoop]: Abstraction has 1566 states and 5472 transitions. [2021-10-13 21:23:19,024 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 21:23:19,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 5472 transitions. [2021-10-13 21:23:19,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 21:23:19,024 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:23:19,025 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 21:23:19,041 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 21:23:19,238 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 21:23:19,238 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:23:19,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:23:19,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1032560, now seen corresponding path program 1 times [2021-10-13 21:23:19,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:23:19,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345497664] [2021-10-13 21:23:19,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:23:19,242 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:23:19,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:23:19,245 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 21:23:19,260 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 21:23:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:23:19,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 21:23:19,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:23:19,640 INFO L354 Elim1Store]: treesize reduction 361, result has 14.7 percent of original size [2021-10-13 21:23:19,641 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 9 case distinctions, treesize of input 189 treesize of output 227 [2021-10-13 21:23:24,181 INFO L354 Elim1Store]: treesize reduction 186, result has 38.4 percent of original size [2021-10-13 21:23:24,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 118 treesize of output 218 [2021-10-13 21:23:39,329 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 21:23:39,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:23:39,368 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 21:23:39,369 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:23:39,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345497664] [2021-10-13 21:23:39,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345497664] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:23:39,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:23:39,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 1] imperfect sequences [] total 3 [2021-10-13 21:23:39,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800726818] [2021-10-13 21:23:39,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 21:23:39,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:23:39,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 21:23:39,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=0, Total=20 [2021-10-13 21:23:39,372 INFO L87 Difference]: Start difference. First operand 1566 states and 5472 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 21:23:51,545 WARN L207 SmtUtils]: Spent 8.09 s on a formula simplification. DAG size of input: 149 DAG size of output: 144 [2021-10-13 21:23:53,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:23:53,806 INFO L93 Difference]: Finished difference Result 1285 states and 4349 transitions. [2021-10-13 21:23:53,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:23:53,808 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 21:23:53,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:23:53,821 INFO L225 Difference]: With dead ends: 1285 [2021-10-13 21:23:53,821 INFO L226 Difference]: Without dead ends: 1285 [2021-10-13 21:23:53,822 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16235.6ms TimeCoverageRelationStatistics Valid=14, Invalid=12, Unknown=4, NotChecked=0, Total=30 [2021-10-13 21:23:53,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2021-10-13 21:23:53,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1285. [2021-10-13 21:23:53,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1036 states have (on average 4.197876447876448) internal successors, (4349), 1284 states have internal predecessors, (4349), 0 states have call successors, (0), 0 states 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 21:23:53,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 4349 transitions. [2021-10-13 21:23:53,885 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 4349 transitions. Word has length 3 [2021-10-13 21:23:53,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:23:53,885 INFO L470 AbstractCegarLoop]: Abstraction has 1285 states and 4349 transitions. [2021-10-13 21:23:53,885 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 21:23:53,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 4349 transitions. [2021-10-13 21:23:53,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 21:23:53,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:23:53,886 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 21:23:53,899 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 21:23:54,086 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 21:23:54,087 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:23:54,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:23:54,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1032561, now seen corresponding path program 1 times [2021-10-13 21:23:54,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:23:54,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [481784241] [2021-10-13 21:23:54,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:23:54,091 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:23:54,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:23:54,092 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 21:23:54,110 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 21:23:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:23:54,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 21:23:54,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:23:54,644 INFO L354 Elim1Store]: treesize reduction 245, result has 17.2 percent of original size [2021-10-13 21:23:54,645 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 5 case distinctions, treesize of input 69 treesize of output 103 [2021-10-13 21:23:54,659 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 21:23:54,660 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 378 treesize of output 360 [2021-10-13 21:23:58,003 INFO L354 Elim1Store]: treesize reduction 84, result has 36.8 percent of original size [2021-10-13 21:23:58,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 99 [2021-10-13 21:24:09,151 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 21:24:09,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:24:09,287 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 21:24:09,287 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:24:09,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [481784241] [2021-10-13 21:24:09,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [481784241] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:24:09,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:24:09,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 21:24:09,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113881966] [2021-10-13 21:24:09,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:24:09,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:24:09,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:24:09,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=17, Unknown=1, NotChecked=0, Total=30 [2021-10-13 21:24:09,290 INFO L87 Difference]: Start difference. First operand 1285 states and 4349 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 21:24:17,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:24:17,388 INFO L93 Difference]: Finished difference Result 1004 states and 3226 transitions. [2021-10-13 21:24:17,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:24:17,390 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 21:24:17,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:24:17,400 INFO L225 Difference]: With dead ends: 1004 [2021-10-13 21:24:17,400 INFO L226 Difference]: Without dead ends: 1004 [2021-10-13 21:24:17,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2846.2ms TimeCoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-13 21:24:17,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-10-13 21:24:17,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1004. [2021-10-13 21:24:17,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 831 states have (on average 3.882069795427196) internal successors, (3226), 1003 states have internal predecessors, (3226), 0 states have call successors, (0), 0 states 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 21:24:17,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 3226 transitions. [2021-10-13 21:24:17,442 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 3226 transitions. Word has length 3 [2021-10-13 21:24:17,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:24:17,443 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 3226 transitions. [2021-10-13 21:24:17,443 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 21:24:17,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 3226 transitions. [2021-10-13 21:24:17,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 21:24:17,444 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:24:17,444 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-13 21:24:17,457 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 21:24:17,656 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 21:24:17,657 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:24:17,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:24:17,658 INFO L82 PathProgramCache]: Analyzing trace with hash 31966602, now seen corresponding path program 1 times [2021-10-13 21:24:17,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:24:17,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484770500] [2021-10-13 21:24:17,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:24:17,660 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:24:17,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:24:17,661 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 21:24:17,662 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 21:24:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:24:17,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 21:24:17,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:24:17,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:24:17,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:24:18,089 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:24:18,090 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 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-13 21:24:18,247 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 21:24:18,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:24:18,685 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 21:24:18,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:24:18,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484770500] [2021-10-13 21:24:18,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484770500] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:24:18,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:24:18,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-13 21:24:18,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480964688] [2021-10-13 21:24:18,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 21:24:18,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:24:18,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 21:24:18,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 21:24:18,688 INFO L87 Difference]: Start difference. First operand 1004 states and 3226 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 21:24:25,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:24:25,130 INFO L93 Difference]: Finished difference Result 5987 states and 19297 transitions. [2021-10-13 21:24:25,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 21:24:25,132 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 21:24:25,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:24:25,192 INFO L225 Difference]: With dead ends: 5987 [2021-10-13 21:24:25,193 INFO L226 Difference]: Without dead ends: 5987 [2021-10-13 21:24:25,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 909.5ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-13 21:24:25,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5987 states. [2021-10-13 21:24:25,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5987 to 1012. [2021-10-13 21:24:25,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 839 states have (on average 3.864123957091776) internal successors, (3242), 1011 states have internal predecessors, (3242), 0 states have call successors, (0), 0 states 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 21:24:25,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 3242 transitions. [2021-10-13 21:24:25,301 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 3242 transitions. Word has length 4 [2021-10-13 21:24:25,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:24:25,301 INFO L470 AbstractCegarLoop]: Abstraction has 1012 states and 3242 transitions. [2021-10-13 21:24:25,302 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 21:24:25,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 3242 transitions. [2021-10-13 21:24:25,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 21:24:25,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:24:25,302 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 21:24:25,319 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 21:24:25,517 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 21:24:25,518 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:24:25,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:24:25,519 INFO L82 PathProgramCache]: Analyzing trace with hash 992316545, now seen corresponding path program 1 times [2021-10-13 21:24:25,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:24:25,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909188602] [2021-10-13 21:24:25,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:24:25,520 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:24:25,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:24:25,522 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 21:24:25,524 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 21:24:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:24:25,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 21:24:25,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:24:25,936 INFO L354 Elim1Store]: treesize reduction 353, result has 14.9 percent of original size [2021-10-13 21:24:25,938 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 533 treesize of output 559 [2021-10-13 21:24:29,068 INFO L354 Elim1Store]: treesize reduction 186, result has 38.4 percent of original size [2021-10-13 21:24:29,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 103 treesize of output 203 [2021-10-13 21:24:53,544 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 21:24:53,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:24:53,609 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 21:24:53,609 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:24:53,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909188602] [2021-10-13 21:24:53,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909188602] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:24:53,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:24:53,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 1] imperfect sequences [] total 3 [2021-10-13 21:24:53,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117374618] [2021-10-13 21:24:53,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 21:24:53,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:24:53,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 21:24:53,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=0, Total=20 [2021-10-13 21:24:53,612 INFO L87 Difference]: Start difference. First operand 1012 states and 3242 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 21:24:58,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:24:58,944 INFO L93 Difference]: Finished difference Result 965 states and 3108 transitions. [2021-10-13 21:24:58,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:24:58,945 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 21:24:58,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:24:58,955 INFO L225 Difference]: With dead ends: 965 [2021-10-13 21:24:58,955 INFO L226 Difference]: Without dead ends: 965 [2021-10-13 21:24:58,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8265.2ms TimeCoverageRelationStatistics Valid=14, Invalid=12, Unknown=4, NotChecked=0, Total=30 [2021-10-13 21:24:58,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2021-10-13 21:24:58,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 965. [2021-10-13 21:24:58,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 812 states have (on average 3.8275862068965516) internal successors, (3108), 964 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states 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 21:24:58,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 3108 transitions. [2021-10-13 21:24:58,992 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 3108 transitions. Word has length 5 [2021-10-13 21:24:58,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:24:58,992 INFO L470 AbstractCegarLoop]: Abstraction has 965 states and 3108 transitions. [2021-10-13 21:24:58,993 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 21:24:58,993 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 3108 transitions. [2021-10-13 21:24:58,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 21:24:58,993 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:24:58,993 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 21:24:59,011 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 21:24:59,208 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 21:24:59,208 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:24:59,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:24:59,209 INFO L82 PathProgramCache]: Analyzing trace with hash 992316546, now seen corresponding path program 1 times [2021-10-13 21:24:59,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:24:59,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821924970] [2021-10-13 21:24:59,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:24:59,211 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:24:59,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:24:59,212 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 21:24:59,213 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 21:24:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:24:59,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 21:24:59,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:24:59,625 INFO L354 Elim1Store]: treesize reduction 239, result has 19.3 percent of original size [2021-10-13 21:24:59,626 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 5 case distinctions, treesize of input 51 treesize of output 91 [2021-10-13 21:24:59,633 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 203 treesize of output 195 [2021-10-13 21:25:04,622 INFO L354 Elim1Store]: treesize reduction 84, result has 36.8 percent of original size [2021-10-13 21:25:04,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 95 [2021-10-13 21:25:22,240 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 21:25:22,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:25:22,403 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 21:25:22,403 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:25:22,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821924970] [2021-10-13 21:25:22,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821924970] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:25:22,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:25:22,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 21:25:22,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803365856] [2021-10-13 21:25:22,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:25:22,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:25:22,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:25:22,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=17, Unknown=1, NotChecked=0, Total=30 [2021-10-13 21:25:22,405 INFO L87 Difference]: Start difference. First operand 965 states and 3108 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 21:25:31,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:25:31,574 INFO L93 Difference]: Finished difference Result 918 states and 2974 transitions. [2021-10-13 21:25:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:25:31,576 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 21:25:31,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:25:31,584 INFO L225 Difference]: With dead ends: 918 [2021-10-13 21:25:31,584 INFO L226 Difference]: Without dead ends: 918 [2021-10-13 21:25:31,585 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4378.7ms TimeCoverageRelationStatistics Valid=18, Invalid=23, Unknown=1, NotChecked=0, Total=42 [2021-10-13 21:25:31,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2021-10-13 21:25:31,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 918. [2021-10-13 21:25:31,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 785 states have (on average 3.788535031847134) internal successors, (2974), 917 states have internal predecessors, (2974), 0 states have call successors, (0), 0 states 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 21:25:31,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 2974 transitions. [2021-10-13 21:25:31,619 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 2974 transitions. Word has length 5 [2021-10-13 21:25:31,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:25:31,619 INFO L470 AbstractCegarLoop]: Abstraction has 918 states and 2974 transitions. [2021-10-13 21:25:31,619 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 21:25:31,619 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 2974 transitions. [2021-10-13 21:25:31,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 21:25:31,620 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:25:31,620 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 21:25:31,632 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 21:25:31,832 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 21:25:31,833 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:25:31,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:25:31,834 INFO L82 PathProgramCache]: Analyzing trace with hash 697034673, now seen corresponding path program 1 times [2021-10-13 21:25:31,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:25:31,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002242091] [2021-10-13 21:25:31,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:25:31,835 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:25:31,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:25:31,836 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 21:25:31,837 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 21:25:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:25:31,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 21:25:31,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:25:32,040 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 21:25:32,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:25:32,096 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 21:25:32,097 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:25:32,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002242091] [2021-10-13 21:25:32,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002242091] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:25:32,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:25:32,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 21:25:32,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330269221] [2021-10-13 21:25:32,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:25:32,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:25:32,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:25:32,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 21:25:32,101 INFO L87 Difference]: Start difference. First operand 918 states and 2974 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 21:25:32,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:25:32,439 INFO L93 Difference]: Finished difference Result 987 states and 3128 transitions. [2021-10-13 21:25:32,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 21:25:32,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 21:25:32,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:25:32,460 INFO L225 Difference]: With dead ends: 987 [2021-10-13 21:25:32,461 INFO L226 Difference]: Without dead ends: 979 [2021-10-13 21:25:32,461 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.0ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 21:25:32,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2021-10-13 21:25:32,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 978. [2021-10-13 21:25:32,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 841 states have (on average 3.6956004756242566) internal successors, (3108), 977 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states 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 21:25:32,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 3108 transitions. [2021-10-13 21:25:32,563 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 3108 transitions. Word has length 6 [2021-10-13 21:25:32,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:25:32,563 INFO L470 AbstractCegarLoop]: Abstraction has 978 states and 3108 transitions. [2021-10-13 21:25:32,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 21:25:32,564 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 3108 transitions. [2021-10-13 21:25:32,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 21:25:32,565 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:25:32,565 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:25:32,586 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 21:25:32,781 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 21:25:32,782 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:25:32,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:25:32,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1119934126, now seen corresponding path program 1 times [2021-10-13 21:25:32,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:25:32,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315834708] [2021-10-13 21:25:32,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:25:32,784 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:25:32,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:25:32,785 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 21:25:32,788 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 21:25:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:25:32,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 21:25:32,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:25:32,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:25:32,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:25:33,343 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:25:33,344 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 5 case distinctions, treesize of input 48 treesize of output 98 [2021-10-13 21:25:33,618 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-13 21:25:33,619 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 6 case distinctions, treesize of input 98 treesize of output 143 [2021-10-13 21:25:45,556 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-10-13 21:25:45,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2021-10-13 21:25:45,598 INFO L354 Elim1Store]: treesize reduction -2, result has 108.0 percent of original size [2021-10-13 21:25:45,599 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 59 treesize of output 79 [2021-10-13 21:25:46,431 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 21:25:46,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:25:48,552 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 21:25:48,552 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:25:48,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315834708] [2021-10-13 21:25:48,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315834708] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:25:48,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:25:48,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-13 21:25:48,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144446147] [2021-10-13 21:25:48,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 21:25:48,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:25:48,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 21:25:48,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 21:25:48,554 INFO L87 Difference]: Start difference. First operand 978 states and 3108 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 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 21:26:04,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:26:04,015 INFO L93 Difference]: Finished difference Result 2233 states and 7093 transitions. [2021-10-13 21:26:04,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 21:26:04,017 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 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 21:26:04,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:26:04,029 INFO L225 Difference]: With dead ends: 2233 [2021-10-13 21:26:04,029 INFO L226 Difference]: Without dead ends: 2233 [2021-10-13 21:26:04,030 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 9029.5ms TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-10-13 21:26:04,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2021-10-13 21:26:04,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 1348. [2021-10-13 21:26:04,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1211 states have (on average 3.873658133773741) internal successors, (4691), 1347 states have internal predecessors, (4691), 0 states have call successors, (0), 0 states 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 21:26:04,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4691 transitions. [2021-10-13 21:26:04,091 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4691 transitions. Word has length 7 [2021-10-13 21:26:04,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:26:04,092 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4691 transitions. [2021-10-13 21:26:04,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 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 21:26:04,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4691 transitions. [2021-10-13 21:26:04,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 21:26:04,094 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:26:04,094 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:26:04,108 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 21:26:04,309 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 21:26:04,310 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:26:04,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:26:04,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1119934125, now seen corresponding path program 1 times [2021-10-13 21:26:04,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:26:04,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076910484] [2021-10-13 21:26:04,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:26:04,312 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:26:04,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:26:04,313 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 21:26:04,315 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 21:26:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:26:04,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 21:26:04,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:26:04,721 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-13 21:26:04,721 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 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-13 21:26:05,404 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 21:26:05,404 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 17 treesize of output 22 [2021-10-13 21:26:05,438 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 21:26:05,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:26:05,486 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 21:26:05,487 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:26:05,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076910484] [2021-10-13 21:26:05,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076910484] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:26:05,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:26:05,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 21:26:05,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412674830] [2021-10-13 21:26:05,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:26:05,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:26:05,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:26:05,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:26:05,489 INFO L87 Difference]: Start difference. First operand 1348 states and 4691 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 21:26:05,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:26:05,737 INFO L93 Difference]: Finished difference Result 924 states and 3020 transitions. [2021-10-13 21:26:05,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:26:05,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 21:26:05,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:26:05,742 INFO L225 Difference]: With dead ends: 924 [2021-10-13 21:26:05,743 INFO L226 Difference]: Without dead ends: 924 [2021-10-13 21:26:05,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 21:26:05,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-10-13 21:26:05,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 924. [2021-10-13 21:26:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 852 states have (on average 3.544600938967136) internal successors, (3020), 923 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states 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 21:26:05,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 3020 transitions. [2021-10-13 21:26:05,774 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 3020 transitions. Word has length 7 [2021-10-13 21:26:05,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:26:05,775 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 3020 transitions. [2021-10-13 21:26:05,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 21:26:05,775 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 3020 transitions. [2021-10-13 21:26:05,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 21:26:05,776 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:26:05,776 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:26:05,790 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 21:26:05,989 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 21:26:05,990 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:26:05,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:26:05,990 INFO L82 PathProgramCache]: Analyzing trace with hash 133483450, now seen corresponding path program 1 times [2021-10-13 21:26:05,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:26:05,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223942973] [2021-10-13 21:26:05,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:26:05,992 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:26:05,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:26:05,993 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 21:26:05,995 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 21:26:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:26:06,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 21:26:06,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:26:06,427 INFO L354 Elim1Store]: treesize reduction 247, result has 16.6 percent of original size [2021-10-13 21:26:06,428 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 5 case distinctions, treesize of input 51 treesize of output 83 [2021-10-13 21:26:06,435 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 279 treesize of output 271 [2021-10-13 21:26:07,082 INFO L354 Elim1Store]: treesize reduction 100, result has 24.8 percent of original size [2021-10-13 21:26:07,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 49 treesize of output 72 [2021-10-13 21:26:19,107 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 21:26:19,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:26:19,298 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 21:26:19,299 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:26:19,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223942973] [2021-10-13 21:26:19,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223942973] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:26:19,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:26:19,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 21:26:19,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060977558] [2021-10-13 21:26:19,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:26:19,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:26:19,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:26:19,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 21:26:19,301 INFO L87 Difference]: Start difference. First operand 924 states and 3020 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 21:26:21,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:26:21,968 INFO L93 Difference]: Finished difference Result 865 states and 2846 transitions. [2021-10-13 21:26:21,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:26:21,970 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 21:26:21,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:26:21,974 INFO L225 Difference]: With dead ends: 865 [2021-10-13 21:26:21,974 INFO L226 Difference]: Without dead ends: 865 [2021-10-13 21:26:21,975 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1086.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 21:26:21,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-10-13 21:26:22,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 865. [2021-10-13 21:26:22,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 809 states have (on average 3.5179233621755253) internal successors, (2846), 864 states have internal predecessors, (2846), 0 states have call successors, (0), 0 states 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 21:26:22,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 2846 transitions. [2021-10-13 21:26:22,026 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 2846 transitions. Word has length 7 [2021-10-13 21:26:22,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:26:22,027 INFO L470 AbstractCegarLoop]: Abstraction has 865 states and 2846 transitions. [2021-10-13 21:26:22,027 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 21:26:22,027 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 2846 transitions. [2021-10-13 21:26:22,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 21:26:22,028 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:26:22,029 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:26:22,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 21:26:22,245 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 21:26:22,246 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:26:22,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:26:22,246 INFO L82 PathProgramCache]: Analyzing trace with hash 133483451, now seen corresponding path program 1 times [2021-10-13 21:26:22,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:26:22,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721988148] [2021-10-13 21:26:22,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:26:22,248 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:26:22,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:26:22,249 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 21:26:22,250 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 21:26:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:26:22,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 21:26:22,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:26:22,702 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-13 21:26:22,703 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 6 case distinctions, treesize of input 562 treesize of output 575 [2021-10-13 21:26:26,071 INFO L354 Elim1Store]: treesize reduction 175, result has 42.1 percent of original size [2021-10-13 21:26:26,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 106 treesize of output 217 [2021-10-13 21:26:40,394 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 21:26:40,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:26:40,450 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 21:26:40,451 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:26:40,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721988148] [2021-10-13 21:26:40,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721988148] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:26:40,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:26:40,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 21:26:40,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301353141] [2021-10-13 21:26:40,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:26:40,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:26:40,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:26:40,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:26:40,452 INFO L87 Difference]: Start difference. First operand 865 states and 2846 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:26:40,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:26:40,632 INFO L93 Difference]: Finished difference Result 806 states and 2672 transitions. [2021-10-13 21:26:40,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:26:40,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 21:26:40,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:26:40,637 INFO L225 Difference]: With dead ends: 806 [2021-10-13 21:26:40,637 INFO L226 Difference]: Without dead ends: 806 [2021-10-13 21:26:40,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 204.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:26:40,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-10-13 21:26:40,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2021-10-13 21:26:40,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 766 states have (on average 3.4882506527415145) internal successors, (2672), 805 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states 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 21:26:40,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 2672 transitions. [2021-10-13 21:26:40,663 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 2672 transitions. Word has length 7 [2021-10-13 21:26:40,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:26:40,664 INFO L470 AbstractCegarLoop]: Abstraction has 806 states and 2672 transitions. [2021-10-13 21:26:40,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:26:40,664 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 2672 transitions. [2021-10-13 21:26:40,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 21:26:40,665 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:26:40,665 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-13 21:26:40,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-13 21:26:40,875 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 21:26:40,876 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:26:40,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:26:40,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1653164598, now seen corresponding path program 2 times [2021-10-13 21:26:40,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:26:40,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242173554] [2021-10-13 21:26:40,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:26:40,878 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:26:40,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:26:40,881 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 21:26:40,882 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 21:26:41,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 21:26:41,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:26:41,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:26:41,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:26:41,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:26:41,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:26:41,415 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:26:41,415 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 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-13 21:26:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:26:41,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:26:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:26:43,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:26:43,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242173554] [2021-10-13 21:26:43,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242173554] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:26:43,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:26:43,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-13 21:26:43,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011683026] [2021-10-13 21:26:43,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 21:26:43,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:26:43,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 21:26:43,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-13 21:26:43,510 INFO L87 Difference]: Start difference. First operand 806 states and 2672 transitions. Second operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states 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 21:27:17,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:27:17,739 INFO L93 Difference]: Finished difference Result 10138 states and 34071 transitions. [2021-10-13 21:27:17,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 21:27:17,743 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have 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 21:27:17,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:27:17,803 INFO L225 Difference]: With dead ends: 10138 [2021-10-13 21:27:17,803 INFO L226 Difference]: Without dead ends: 10138 [2021-10-13 21:27:17,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 7206.4ms TimeCoverageRelationStatistics Valid=219, Invalid=381, Unknown=0, NotChecked=0, Total=600 [2021-10-13 21:27:17,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10138 states. [2021-10-13 21:27:18,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10138 to 835. [2021-10-13 21:27:18,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 795 states have (on average 3.4452830188679244) internal successors, (2739), 834 states have internal predecessors, (2739), 0 states have call successors, (0), 0 states 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 21:27:18,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 2739 transitions. [2021-10-13 21:27:18,046 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 2739 transitions. Word has length 8 [2021-10-13 21:27:18,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:27:18,047 INFO L470 AbstractCegarLoop]: Abstraction has 835 states and 2739 transitions. [2021-10-13 21:27:18,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states 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 21:27:18,047 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 2739 transitions. [2021-10-13 21:27:18,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 21:27:18,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:27:18,052 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:27:18,074 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 21:27:18,252 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 21:27:18,252 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:27:18,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:27:18,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1787689570, now seen corresponding path program 1 times [2021-10-13 21:27:18,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:27:18,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302668302] [2021-10-13 21:27:18,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:27:18,254 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:27:18,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:27:18,255 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 21:27:18,262 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 21:27:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:27:18,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 21:27:18,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:27:18,475 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 21:27:18,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:27:18,562 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 21:27:18,562 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:27:18,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302668302] [2021-10-13 21:27:18,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302668302] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:27:18,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:27:18,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 21:27:18,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289455093] [2021-10-13 21:27:18,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:27:18,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:27:18,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:27:18,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:27:18,564 INFO L87 Difference]: Start difference. First operand 835 states and 2739 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 21:27:18,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:27:18,726 INFO L93 Difference]: Finished difference Result 831 states and 2694 transitions. [2021-10-13 21:27:18,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:27:18,728 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 21:27:18,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:27:18,731 INFO L225 Difference]: With dead ends: 831 [2021-10-13 21:27:18,732 INFO L226 Difference]: Without dead ends: 831 [2021-10-13 21:27:18,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:27:18,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2021-10-13 21:27:18,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 831. [2021-10-13 21:27:18,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 785 states have (on average 3.431847133757962) internal successors, (2694), 830 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states 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 21:27:18,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2694 transitions. [2021-10-13 21:27:18,760 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2694 transitions. Word has length 9 [2021-10-13 21:27:18,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:27:18,760 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 2694 transitions. [2021-10-13 21:27:18,760 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 21:27:18,760 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2694 transitions. [2021-10-13 21:27:18,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 21:27:18,761 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:27:18,761 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2021-10-13 21:27:18,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 21:27:18,977 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 21:27:18,978 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:27:18,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:27:18,979 INFO L82 PathProgramCache]: Analyzing trace with hash 488622065, now seen corresponding path program 2 times [2021-10-13 21:27:18,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:27:18,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195247308] [2021-10-13 21:27:18,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:27:18,979 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:27:18,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:27:18,982 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 21:27:18,989 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 21:27:19,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:27:19,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:27:19,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 21:27:19,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:27:19,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:27:19,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:27:19,469 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:27:19,470 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 5 case distinctions, treesize of input 48 treesize of output 98 [2021-10-13 21:27:19,772 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-13 21:27:19,773 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 6 case distinctions, treesize of input 98 treesize of output 143 [2021-10-13 21:27:31,807 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-10-13 21:27:31,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 64 [2021-10-13 21:27:31,857 INFO L354 Elim1Store]: treesize reduction -2, result has 108.0 percent of original size [2021-10-13 21:27:31,857 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 61 treesize of output 81 [2021-10-13 21:27:32,140 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 21:27:32,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:27:34,660 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 21:27:34,661 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:27:34,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195247308] [2021-10-13 21:27:34,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1195247308] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:27:34,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:27:34,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 21:27:34,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971635630] [2021-10-13 21:27:34,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:27:34,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:27:34,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:27:34,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 21:27:34,663 INFO L87 Difference]: Start difference. First operand 831 states and 2694 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 21:27:35,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:27:35,326 INFO L93 Difference]: Finished difference Result 573 states and 1852 transitions. [2021-10-13 21:27:35,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:27:35,327 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 10 [2021-10-13 21:27:35,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:27:35,330 INFO L225 Difference]: With dead ends: 573 [2021-10-13 21:27:35,331 INFO L226 Difference]: Without dead ends: 573 [2021-10-13 21:27:35,331 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 215.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 21:27:35,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-10-13 21:27:35,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 364. [2021-10-13 21:27:35,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 351 states have (on average 3.0655270655270654) internal successors, (1076), 363 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states 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 21:27:35,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 1076 transitions. [2021-10-13 21:27:35,344 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 1076 transitions. Word has length 10 [2021-10-13 21:27:35,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:27:35,345 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 1076 transitions. [2021-10-13 21:27:35,345 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 21:27:35,345 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 1076 transitions. [2021-10-13 21:27:35,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 21:27:35,346 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:27:35,346 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:27:35,361 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 21:27:35,561 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 21:27:35,562 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:27:35,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:27:35,563 INFO L82 PathProgramCache]: Analyzing trace with hash -533439560, now seen corresponding path program 1 times [2021-10-13 21:27:35,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:27:35,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664763580] [2021-10-13 21:27:35,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:27:35,564 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:27:35,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:27:35,566 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 21:27:35,571 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 21:27:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:27:35,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 21:27:35,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:27:35,806 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 21:27:35,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:27:35,919 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 21:27:35,919 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:27:35,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664763580] [2021-10-13 21:27:35,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664763580] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:27:35,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:27:35,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 21:27:35,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844896262] [2021-10-13 21:27:35,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:27:35,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:27:35,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:27:35,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:27:35,921 INFO L87 Difference]: Start difference. First operand 364 states and 1076 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 21:27:36,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:27:36,059 INFO L93 Difference]: Finished difference Result 370 states and 1070 transitions. [2021-10-13 21:27:36,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:27:36,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 21:27:36,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:27:36,061 INFO L225 Difference]: With dead ends: 370 [2021-10-13 21:27:36,061 INFO L226 Difference]: Without dead ends: 341 [2021-10-13 21:27:36,061 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:27:36,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-10-13 21:27:36,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2021-10-13 21:27:36,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 328 states have (on average 3.051829268292683) internal successors, (1001), 340 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states 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 21:27:36,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 1001 transitions. [2021-10-13 21:27:36,073 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 1001 transitions. Word has length 10 [2021-10-13 21:27:36,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:27:36,073 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 1001 transitions. [2021-10-13 21:27:36,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 21:27:36,073 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 1001 transitions. [2021-10-13 21:27:36,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 21:27:36,074 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:27:36,074 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:27:36,088 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 21:27:36,287 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 21:27:36,288 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:27:36,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:27:36,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1405917541, now seen corresponding path program 1 times [2021-10-13 21:27:36,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:27:36,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355790066] [2021-10-13 21:27:36,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:27:36,289 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:27:36,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:27:36,290 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 21:27:36,291 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 21:27:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:27:36,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 21:27:36,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:27:36,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 21:27:36,555 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 21:27:36,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:27:36,591 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 21:27:36,591 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:27:36,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355790066] [2021-10-13 21:27:36,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355790066] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:27:36,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:27:36,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 21:27:36,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494877607] [2021-10-13 21:27:36,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:27:36,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:27:36,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:27:36,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:27:36,593 INFO L87 Difference]: Start difference. First operand 341 states and 1001 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states 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 21:27:36,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:27:36,801 INFO L93 Difference]: Finished difference Result 265 states and 759 transitions. [2021-10-13 21:27:36,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:27:36,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 21:27:36,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:27:36,802 INFO L225 Difference]: With dead ends: 265 [2021-10-13 21:27:36,803 INFO L226 Difference]: Without dead ends: 265 [2021-10-13 21:27:36,803 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 21:27:36,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-10-13 21:27:36,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2021-10-13 21:27:36,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 258 states have (on average 2.941860465116279) internal successors, (759), 264 states have internal predecessors, (759), 0 states have call successors, (0), 0 states 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 21:27:36,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 759 transitions. [2021-10-13 21:27:36,810 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 759 transitions. Word has length 11 [2021-10-13 21:27:36,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:27:36,810 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 759 transitions. [2021-10-13 21:27:36,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states 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 21:27:36,811 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 759 transitions. [2021-10-13 21:27:36,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 21:27:36,811 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:27:36,811 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:27:36,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-10-13 21:27:37,024 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 21:27:37,025 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:27:37,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:27:37,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1405917543, now seen corresponding path program 1 times [2021-10-13 21:27:37,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:27:37,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386572455] [2021-10-13 21:27:37,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:27:37,027 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:27:37,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:27:37,029 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 21:27:37,030 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 21:27:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:27:37,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 21:27:37,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:27:37,368 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 21:27:37,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:27:37,447 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 21:27:37,448 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:27:37,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386572455] [2021-10-13 21:27:37,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386572455] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:27:37,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:27:37,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 21:27:37,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072665967] [2021-10-13 21:27:37,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:27:37,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:27:37,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:27:37,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 21:27:37,450 INFO L87 Difference]: Start difference. First operand 265 states and 759 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 21:27:37,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:27:37,691 INFO L93 Difference]: Finished difference Result 346 states and 972 transitions. [2021-10-13 21:27:37,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 21:27:37,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 21:27:37,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:27:37,693 INFO L225 Difference]: With dead ends: 346 [2021-10-13 21:27:37,693 INFO L226 Difference]: Without dead ends: 265 [2021-10-13 21:27:37,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.0ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-13 21:27:37,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-10-13 21:27:37,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2021-10-13 21:27:37,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 258 states have (on average 2.937984496124031) internal successors, (758), 264 states have internal predecessors, (758), 0 states have call successors, (0), 0 states 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 21:27:37,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 758 transitions. [2021-10-13 21:27:37,707 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 758 transitions. Word has length 11 [2021-10-13 21:27:37,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:27:37,708 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 758 transitions. [2021-10-13 21:27:37,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 21:27:37,708 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 758 transitions. [2021-10-13 21:27:37,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 21:27:37,709 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:27:37,709 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:27:37,723 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 21:27:37,922 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 21:27:37,923 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:27:37,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:27:37,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1631512472, now seen corresponding path program 1 times [2021-10-13 21:27:37,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:27:37,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601134886] [2021-10-13 21:27:37,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:27:37,925 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:27:37,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:27:37,926 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 21:27:37,957 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 21:27:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:27:38,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 21:27:38,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:27:38,212 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 21:27:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 21:27:38,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:27:39,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 21:27:39,772 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:27:39,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601134886] [2021-10-13 21:27:39,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601134886] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:27:39,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:27:39,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-13 21:27:39,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076953570] [2021-10-13 21:27:39,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 21:27:39,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:27:39,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 21:27:39,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 21:27:39,774 INFO L87 Difference]: Start difference. First operand 265 states and 758 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:27:42,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:27:42,194 INFO L93 Difference]: Finished difference Result 575 states and 1708 transitions. [2021-10-13 21:27:42,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 21:27:42,196 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 21:27:42,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:27:42,200 INFO L225 Difference]: With dead ends: 575 [2021-10-13 21:27:42,200 INFO L226 Difference]: Without dead ends: 575 [2021-10-13 21:27:42,201 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1187.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-13 21:27:42,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-10-13 21:27:42,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 410. [2021-10-13 21:27:42,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 403 states have (on average 3.029776674937965) internal successors, (1221), 409 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states 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 21:27:42,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 1221 transitions. [2021-10-13 21:27:42,216 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 1221 transitions. Word has length 12 [2021-10-13 21:27:42,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:27:42,219 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 1221 transitions. [2021-10-13 21:27:42,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:27:42,219 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 1221 transitions. [2021-10-13 21:27:42,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 21:27:42,220 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:27:42,220 INFO L512 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2021-10-13 21:27:42,236 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 21:27:42,435 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 21:27:42,436 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:27:42,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:27:42,436 INFO L82 PathProgramCache]: Analyzing trace with hash 433661327, now seen corresponding path program 1 times [2021-10-13 21:27:42,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:27:42,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323702995] [2021-10-13 21:27:42,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:27:42,437 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:27:42,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:27:42,438 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:27:42,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 21:27:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:27:42,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 21:27:42,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:27:42,746 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 21:27:43,263 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:27:43,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:27:47,183 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:27:47,184 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:27:47,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323702995] [2021-10-13 21:27:47,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323702995] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:27:47,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:27:47,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-13 21:27:47,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323710703] [2021-10-13 21:27:47,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 21:27:47,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:27:47,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 21:27:47,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2021-10-13 21:27:47,185 INFO L87 Difference]: Start difference. First operand 410 states and 1221 transitions. Second operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:27:54,609 WARN L207 SmtUtils]: Spent 5.66 s on a formula simplification that was a NOOP. DAG size: 113 [2021-10-13 21:28:38,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:28:38,137 INFO L93 Difference]: Finished difference Result 3810 states and 11676 transitions. [2021-10-13 21:28:38,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 21:28:38,139 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 21:28:38,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:28:38,154 INFO L225 Difference]: With dead ends: 3810 [2021-10-13 21:28:38,154 INFO L226 Difference]: Without dead ends: 3810 [2021-10-13 21:28:38,155 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 25796.6ms TimeCoverageRelationStatistics Valid=339, Invalid=591, Unknown=0, NotChecked=0, Total=930 [2021-10-13 21:28:38,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2021-10-13 21:28:38,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 424. [2021-10-13 21:28:38,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 417 states have (on average 2.964028776978417) internal successors, (1236), 423 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states 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 21:28:38,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 1236 transitions. [2021-10-13 21:28:38,201 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 1236 transitions. Word has length 12 [2021-10-13 21:28:38,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:28:38,201 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 1236 transitions. [2021-10-13 21:28:38,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:28:38,202 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 1236 transitions. [2021-10-13 21:28:38,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 21:28:38,203 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:28:38,203 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:28:38,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 21:28:38,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:28:38,423 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:28:38,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:28:38,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1158094247, now seen corresponding path program 2 times [2021-10-13 21:28:38,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:28:38,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312063815] [2021-10-13 21:28:38,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:28:38,425 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:28:38,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:28:38,427 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:28:38,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 21:28:38,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:28:38,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:28:38,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:28:38,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:28:38,705 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 21:28:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 21:28:38,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:28:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 21:28:40,150 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:28:40,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312063815] [2021-10-13 21:28:40,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1312063815] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:28:40,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:28:40,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 21:28:40,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612565443] [2021-10-13 21:28:40,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:28:40,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:28:40,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:28:40,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 21:28:40,153 INFO L87 Difference]: Start difference. First operand 424 states and 1236 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:28:40,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:28:40,473 INFO L93 Difference]: Finished difference Result 360 states and 1034 transitions. [2021-10-13 21:28:40,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:28:40,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 21:28:40,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:28:40,477 INFO L225 Difference]: With dead ends: 360 [2021-10-13 21:28:40,477 INFO L226 Difference]: Without dead ends: 360 [2021-10-13 21:28:40,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 183.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 21:28:40,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-10-13 21:28:40,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 215. [2021-10-13 21:28:40,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 212 states have (on average 2.693396226415094) internal successors, (571), 214 states have internal predecessors, (571), 0 states have call successors, (0), 0 states 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 21:28:40,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 571 transitions. [2021-10-13 21:28:40,484 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 571 transitions. Word has length 15 [2021-10-13 21:28:40,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:28:40,484 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 571 transitions. [2021-10-13 21:28:40,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:28:40,485 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 571 transitions. [2021-10-13 21:28:40,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 21:28:40,485 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:28:40,485 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1] [2021-10-13 21:28:40,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-13 21:28:40,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:28:40,699 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:28:40,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:28:40,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1649292874, now seen corresponding path program 3 times [2021-10-13 21:28:40,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:28:40,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706238522] [2021-10-13 21:28:40,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:28:40,701 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:28:40,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:28:40,703 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:28:40,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 21:28:41,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 21:28:41,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:28:41,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 21:28:41,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:28:41,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:28:41,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:28:41,548 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:28:41,548 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 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-13 21:28:42,478 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:28:42,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:28:48,644 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:28:48,644 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:28:48,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706238522] [2021-10-13 21:28:48,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706238522] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:28:48,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:28:48,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-13 21:28:48,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287274065] [2021-10-13 21:28:48,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-13 21:28:48,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:28:48,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-13 21:28:48,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-10-13 21:28:48,647 INFO L87 Difference]: Start difference. First operand 215 states and 571 transitions. Second operand has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:29:03,001 WARN L207 SmtUtils]: Spent 9.55 s on a formula simplification that was a NOOP. DAG size: 168 [2021-10-13 21:29:13,468 WARN L207 SmtUtils]: Spent 9.31 s on a formula simplification that was a NOOP. DAG size: 157 [2021-10-13 21:29:22,215 WARN L207 SmtUtils]: Spent 7.39 s on a formula simplification that was a NOOP. DAG size: 146 [2021-10-13 21:29:57,282 WARN L207 SmtUtils]: Spent 5.64 s on a formula simplification that was a NOOP. DAG size: 136 [2021-10-13 21:30:04,137 WARN L207 SmtUtils]: Spent 5.71 s on a formula simplification that was a NOOP. DAG size: 125 [2021-10-13 21:30:29,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:30:29,136 INFO L93 Difference]: Finished difference Result 2556 states and 7728 transitions. [2021-10-13 21:30:29,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 21:30:29,139 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 21:30:29,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:30:29,145 INFO L225 Difference]: With dead ends: 2556 [2021-10-13 21:30:29,145 INFO L226 Difference]: Without dead ends: 2556 [2021-10-13 21:30:29,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 65790.1ms TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 21:30:29,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2021-10-13 21:30:29,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 231. [2021-10-13 21:30:29,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 228 states have (on average 2.6447368421052633) internal successors, (603), 230 states have internal predecessors, (603), 0 states have call successors, (0), 0 states 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 21:30:29,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 603 transitions. [2021-10-13 21:30:29,169 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 603 transitions. Word has length 16 [2021-10-13 21:30:29,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:30:29,170 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 603 transitions. [2021-10-13 21:30:29,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:30:29,170 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 603 transitions. [2021-10-13 21:30:29,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 21:30:29,171 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:30:29,171 INFO L512 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2021-10-13 21:30:29,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-13 21:30:29,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:30:29,372 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:30:29,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:30:29,373 INFO L82 PathProgramCache]: Analyzing trace with hash -936392382, now seen corresponding path program 2 times [2021-10-13 21:30:29,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:30:29,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33659853] [2021-10-13 21:30:29,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:30:29,375 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:30:29,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:30:29,376 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:30:29,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 21:30:29,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 21:30:29,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:30:29,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-13 21:30:29,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:30:29,754 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 21:30:31,361 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:30:31,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:30:46,214 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:30:46,214 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:30:46,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33659853] [2021-10-13 21:30:46,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33659853] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:30:46,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:30:46,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2021-10-13 21:30:46,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139535340] [2021-10-13 21:30:46,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-10-13 21:30:46,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:30:46,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-10-13 21:30:46,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=1366, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 21:30:46,216 INFO L87 Difference]: Start difference. First operand 231 states and 603 transitions. Second operand has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 44 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 21:31:27,637 WARN L207 SmtUtils]: Spent 29.22 s on a formula simplification that was a NOOP. DAG size: 232 [2021-10-13 21:32:39,402 WARN L207 SmtUtils]: Spent 27.84 s on a formula simplification that was a NOOP. DAG size: 222 [2021-10-13 21:33:06,376 WARN L207 SmtUtils]: Spent 24.66 s on a formula simplification that was a NOOP. DAG size: 211 [2021-10-13 21:33:27,337 WARN L207 SmtUtils]: Spent 18.53 s on a formula simplification that was a NOOP. DAG size: 200 [2021-10-13 21:33:49,166 WARN L207 SmtUtils]: Spent 19.72 s on a formula simplification that was a NOOP. DAG size: 189 [2021-10-13 21:34:04,405 WARN L207 SmtUtils]: Spent 13.04 s on a formula simplification that was a NOOP. DAG size: 179 [2021-10-13 21:34:20,664 WARN L207 SmtUtils]: Spent 14.03 s on a formula simplification that was a NOOP. DAG size: 168 [2021-10-13 21:34:33,811 WARN L207 SmtUtils]: Spent 10.76 s on a formula simplification that was a NOOP. DAG size: 157 [2021-10-13 21:34:46,308 WARN L207 SmtUtils]: Spent 10.38 s on a formula simplification that was a NOOP. DAG size: 146 [2021-10-13 21:34:57,120 WARN L207 SmtUtils]: Spent 7.68 s on a formula simplification that was a NOOP. DAG size: 136 [2021-10-13 21:35:05,746 WARN L207 SmtUtils]: Spent 6.00 s on a formula simplification that was a NOOP. DAG size: 125 [2021-10-13 21:35:46,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:35:46,471 INFO L93 Difference]: Finished difference Result 6475 states and 19669 transitions. [2021-10-13 21:35:46,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 21:35:46,473 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 44 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 21:35:46,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:35:46,522 INFO L225 Difference]: With dead ends: 6475 [2021-10-13 21:35:46,523 INFO L226 Difference]: Without dead ends: 6475 [2021-10-13 21:35:46,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 235824.6ms TimeCoverageRelationStatistics Valid=1406, Invalid=2626, Unknown=0, NotChecked=0, Total=4032 [2021-10-13 21:35:46,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6475 states. [2021-10-13 21:35:46,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6475 to 275. [2021-10-13 21:35:46,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 272 states have (on average 2.4595588235294117) internal successors, (669), 274 states have internal predecessors, (669), 0 states have call successors, (0), 0 states 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 21:35:46,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 669 transitions. [2021-10-13 21:35:46,598 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 669 transitions. Word has length 23 [2021-10-13 21:35:46,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:35:46,601 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 669 transitions. [2021-10-13 21:35:46,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 44 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 21:35:46,601 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 669 transitions. [2021-10-13 21:35:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 21:35:46,604 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:35:46,604 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:35:46,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-13 21:35:46,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:35:46,820 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:35:46,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:35:46,820 INFO L82 PathProgramCache]: Analyzing trace with hash -179394793, now seen corresponding path program 1 times [2021-10-13 21:35:46,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:35:46,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907242734] [2021-10-13 21:35:46,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:35:46,822 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:35:46,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:35:46,823 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:35:46,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 21:35:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:35:47,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 21:35:47,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:35:48,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:35:48,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:35:48,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:35:48,869 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:35:48,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907242734] [2021-10-13 21:35:48,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907242734] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:35:48,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:35:48,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-10-13 21:35:48,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830910143] [2021-10-13 21:35:48,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 21:35:48,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:35:48,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 21:35:48,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-10-13 21:35:48,871 INFO L87 Difference]: Start difference. First operand 275 states and 669 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 21:35:50,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:35:50,108 INFO L93 Difference]: Finished difference Result 354 states and 916 transitions. [2021-10-13 21:35:50,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 21:35:50,109 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 21:35:50,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:35:50,110 INFO L225 Difference]: With dead ends: 354 [2021-10-13 21:35:50,110 INFO L226 Difference]: Without dead ends: 347 [2021-10-13 21:35:50,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 648.9ms TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-10-13 21:35:50,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-10-13 21:35:50,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 297. [2021-10-13 21:35:50,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 294 states have (on average 2.438775510204082) internal successors, (717), 296 states have internal predecessors, (717), 0 states have call successors, (0), 0 states 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 21:35:50,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 717 transitions. [2021-10-13 21:35:50,115 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 717 transitions. Word has length 24 [2021-10-13 21:35:50,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:35:50,116 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 717 transitions. [2021-10-13 21:35:50,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 21:35:50,116 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 717 transitions. [2021-10-13 21:35:50,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 21:35:50,117 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:35:50,117 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:35:50,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-13 21:35:50,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:35:50,318 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:35:50,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:35:50,319 INFO L82 PathProgramCache]: Analyzing trace with hash 926580583, now seen corresponding path program 2 times [2021-10-13 21:35:50,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:35:50,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758020094] [2021-10-13 21:35:50,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:35:50,320 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:35:50,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:35:50,322 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:35:50,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-13 21:35:50,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:35:50,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:35:50,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 21:35:50,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:35:51,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:35:51,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:35:52,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:35:52,276 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:35:52,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758020094] [2021-10-13 21:35:52,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758020094] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:35:52,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:35:52,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-10-13 21:35:52,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059010931] [2021-10-13 21:35:52,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 21:35:52,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:35:52,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 21:35:52,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-10-13 21:35:52,278 INFO L87 Difference]: Start difference. First operand 297 states and 717 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 21:35:53,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:35:53,418 INFO L93 Difference]: Finished difference Result 404 states and 1030 transitions. [2021-10-13 21:35:53,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 21:35:53,419 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 21:35:53,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:35:53,420 INFO L225 Difference]: With dead ends: 404 [2021-10-13 21:35:53,420 INFO L226 Difference]: Without dead ends: 397 [2021-10-13 21:35:53,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 660.7ms TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-10-13 21:35:53,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-10-13 21:35:53,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 317. [2021-10-13 21:35:53,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 314 states have (on average 2.4522292993630574) internal successors, (770), 316 states have internal predecessors, (770), 0 states have call successors, (0), 0 states 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 21:35:53,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 770 transitions. [2021-10-13 21:35:53,430 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 770 transitions. Word has length 24 [2021-10-13 21:35:53,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:35:53,430 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 770 transitions. [2021-10-13 21:35:53,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 21:35:53,431 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 770 transitions. [2021-10-13 21:35:53,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 21:35:53,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:35:53,432 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:35:53,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-13 21:35:53,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:35:53,646 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:35:53,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:35:53,647 INFO L82 PathProgramCache]: Analyzing trace with hash 2082619075, now seen corresponding path program 3 times [2021-10-13 21:35:53,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:35:53,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764293344] [2021-10-13 21:35:53,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:35:53,648 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:35:53,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:35:53,649 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:35:53,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-13 21:35:54,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:35:54,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:35:54,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 21:35:54,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:35:54,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:35:54,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:35:55,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:35:55,387 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:35:55,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764293344] [2021-10-13 21:35:55,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764293344] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:35:55,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:35:55,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-10-13 21:35:55,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742900201] [2021-10-13 21:35:55,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 21:35:55,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:35:55,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 21:35:55,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-10-13 21:35:55,389 INFO L87 Difference]: Start difference. First operand 317 states and 770 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 21:35:56,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:35:56,458 INFO L93 Difference]: Finished difference Result 442 states and 1130 transitions. [2021-10-13 21:35:56,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 21:35:56,459 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 21:35:56,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:35:56,461 INFO L225 Difference]: With dead ends: 442 [2021-10-13 21:35:56,461 INFO L226 Difference]: Without dead ends: 435 [2021-10-13 21:35:56,461 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 561.7ms TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-10-13 21:35:56,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-10-13 21:35:56,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 325. [2021-10-13 21:35:56,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 322 states have (on average 2.4316770186335406) internal successors, (783), 324 states have internal predecessors, (783), 0 states have call successors, (0), 0 states 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 21:35:56,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 783 transitions. [2021-10-13 21:35:56,468 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 783 transitions. Word has length 24 [2021-10-13 21:35:56,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:35:56,468 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 783 transitions. [2021-10-13 21:35:56,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 21:35:56,469 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 783 transitions. [2021-10-13 21:35:56,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 21:35:56,470 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:35:56,470 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:35:56,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-13 21:35:56,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:35:56,686 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:35:56,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:35:56,687 INFO L82 PathProgramCache]: Analyzing trace with hash 899500585, now seen corresponding path program 4 times [2021-10-13 21:35:56,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:35:56,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582268185] [2021-10-13 21:35:56,688 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:35:56,688 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:35:56,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:35:56,689 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:35:56,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-13 21:35:57,303 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:35:57,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:35:57,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 21:35:57,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:35:57,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:35:57,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:35:58,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:35:58,651 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:35:58,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582268185] [2021-10-13 21:35:58,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582268185] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:35:58,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:35:58,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-10-13 21:35:58,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378218145] [2021-10-13 21:35:58,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 21:35:58,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:35:58,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 21:35:58,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-13 21:35:58,653 INFO L87 Difference]: Start difference. First operand 325 states and 783 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 21:36:00,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:36:00,182 INFO L93 Difference]: Finished difference Result 386 states and 957 transitions. [2021-10-13 21:36:00,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 21:36:00,183 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 21:36:00,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:36:00,184 INFO L225 Difference]: With dead ends: 386 [2021-10-13 21:36:00,184 INFO L226 Difference]: Without dead ends: 379 [2021-10-13 21:36:00,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 590.1ms TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-10-13 21:36:00,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-10-13 21:36:00,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 321. [2021-10-13 21:36:00,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 318 states have (on average 2.4245283018867925) internal successors, (771), 320 states have internal predecessors, (771), 0 states have call successors, (0), 0 states 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 21:36:00,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 771 transitions. [2021-10-13 21:36:00,189 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 771 transitions. Word has length 24 [2021-10-13 21:36:00,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:36:00,190 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 771 transitions. [2021-10-13 21:36:00,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 21:36:00,190 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 771 transitions. [2021-10-13 21:36:00,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 21:36:00,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:36:00,191 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:36:00,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-10-13 21:36:00,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:36:00,396 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:36:00,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:36:00,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1894638705, now seen corresponding path program 1 times [2021-10-13 21:36:00,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:36:00,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57516411] [2021-10-13 21:36:00,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:36:00,398 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:36:00,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:36:00,400 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:36:00,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-13 21:36:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:36:00,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 21:36:00,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:36:00,977 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-13 21:36:00,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 89 treesize of output 19 [2021-10-13 21:36:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:36:01,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:36:01,204 INFO L354 Elim1Store]: treesize reduction 484, result has 1.4 percent of original size [2021-10-13 21:36:01,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 28 [2021-10-13 21:36:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:36:01,321 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:36:01,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57516411] [2021-10-13 21:36:01,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57516411] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:36:01,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:36:01,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 21:36:01,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692284643] [2021-10-13 21:36:01,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 21:36:01,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:36:01,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 21:36:01,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 21:36:01,323 INFO L87 Difference]: Start difference. First operand 321 states and 771 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:36:01,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:36:01,886 INFO L93 Difference]: Finished difference Result 393 states and 985 transitions. [2021-10-13 21:36:01,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 21:36:01,888 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 21:36:01,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:36:01,889 INFO L225 Difference]: With dead ends: 393 [2021-10-13 21:36:01,889 INFO L226 Difference]: Without dead ends: 393 [2021-10-13 21:36:01,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 131.4ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 21:36:01,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-10-13 21:36:01,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 371. [2021-10-13 21:36:01,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 368 states have (on average 2.4809782608695654) internal successors, (913), 370 states have internal predecessors, (913), 0 states have call successors, (0), 0 states 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 21:36:01,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 913 transitions. [2021-10-13 21:36:01,896 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 913 transitions. Word has length 25 [2021-10-13 21:36:01,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:36:01,896 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 913 transitions. [2021-10-13 21:36:01,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:36:01,897 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 913 transitions. [2021-10-13 21:36:01,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 21:36:01,898 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:36:01,898 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:36:01,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-10-13 21:36:02,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:36:02,114 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-13 21:36:02,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:36:02,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1231700325, now seen corresponding path program 1 times [2021-10-13 21:36:02,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:36:02,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136410504] [2021-10-13 21:36:02,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:36:02,116 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:36:02,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:36:02,117 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:36:02,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-13 21:36:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:36:02,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 21:36:02,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:36:03,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:36:03,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:36:11,546 WARN L207 SmtUtils]: Spent 8.03 s on a formula simplification. DAG size of input: 530 DAG size of output: 308 [2021-10-13 21:36:11,551 INFO L354 Elim1Store]: treesize reduction 1069, result has 53.4 percent of original size [2021-10-13 21:36:11,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 176 treesize of output 1259 Received shutdown request... [2021-10-13 21:36:30,027 WARN L223 SmtUtils]: Removed 1 from assertion stack [2021-10-13 21:36:30,029 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 21:36:30,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-13 21:36:30,043 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 21:36:30,072 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 21:36:30,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:36:30,231 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. [2021-10-13 21:36:30,233 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-13 21:36:30,233 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-13 21:36:30,233 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-13 21:36:30,233 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-13 21:36:30,233 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-13 21:36:30,234 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-13 21:36:30,234 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-13 21:36:30,234 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-13 21:36:30,234 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-13 21:36:30,234 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-13 21:36:30,234 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 21:36:30,234 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 21:36:30,235 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 21:36:30,235 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 21:36:30,235 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 21:36:30,235 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 21:36:30,235 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 21:36:30,235 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 21:36:30,235 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 21:36:30,235 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-13 21:36:30,236 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-13 21:36:30,236 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-13 21:36:30,236 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-13 21:36:30,236 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-13 21:36:30,236 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-13 21:36:30,236 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-13 21:36:30,236 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 21:36:30,236 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 21:36:30,236 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 21:36:30,237 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 21:36:30,237 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-13 21:36:30,237 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-13 21:36:30,237 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-13 21:36:30,237 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-13 21:36:30,237 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-13 21:36:30,237 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-13 21:36:30,237 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-13 21:36:30,237 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-13 21:36:30,237 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-13 21:36:30,237 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-13 21:36:30,244 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 21:36:30,244 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 21:36:30,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:36:30 BasicIcfg [2021-10-13 21:36:30,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 21:36:30,248 INFO L168 Benchmark]: Toolchain (without parser) took 835919.41 ms. Allocated memory was 167.8 MB in the beginning and 210.8 MB in the end (delta: 43.0 MB). Free memory was 142.4 MB in the beginning and 80.6 MB in the end (delta: 61.8 MB). Peak memory consumption was 155.5 MB. Max. memory is 8.0 GB. [2021-10-13 21:36:30,248 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 167.8 MB. Free memory is still 137.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 21:36:30,248 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.07 ms. Allocated memory is still 167.8 MB. Free memory was 142.1 MB in the beginning and 127.8 MB in the end (delta: 14.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-10-13 21:36:30,249 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.40 ms. Allocated memory is still 167.8 MB. Free memory was 127.8 MB in the beginning and 125.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 21:36:30,249 INFO L168 Benchmark]: Boogie Preprocessor took 83.27 ms. Allocated memory is still 167.8 MB. Free memory was 125.5 MB in the beginning and 123.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 21:36:30,249 INFO L168 Benchmark]: RCFGBuilder took 1870.15 ms. Allocated memory is still 167.8 MB. Free memory was 123.4 MB in the beginning and 114.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 8.0 GB. [2021-10-13 21:36:30,250 INFO L168 Benchmark]: TraceAbstraction took 833483.64 ms. Allocated memory was 167.8 MB in the beginning and 210.8 MB in the end (delta: 43.0 MB). Free memory was 113.6 MB in the beginning and 80.6 MB in the end (delta: 33.0 MB). Peak memory consumption was 126.8 MB. Max. memory is 8.0 GB. [2021-10-13 21:36:30,252 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 167.8 MB. Free memory is still 137.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 385.07 ms. Allocated memory is still 167.8 MB. Free memory was 142.1 MB in the beginning and 127.8 MB in the end (delta: 14.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 79.40 ms. Allocated memory is still 167.8 MB. Free memory was 127.8 MB in the beginning and 125.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 83.27 ms. Allocated memory is still 167.8 MB. Free memory was 125.5 MB in the beginning and 123.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1870.15 ms. Allocated memory is still 167.8 MB. Free memory was 123.4 MB in the beginning and 114.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 833483.64 ms. Allocated memory was 167.8 MB in the beginning and 210.8 MB in the end (delta: 43.0 MB). Free memory was 113.6 MB in the beginning and 80.6 MB in the end (delta: 33.0 MB). Peak memory consumption was 126.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 38220.8ms, 218 PlacesBefore, 63 PlacesAfterwards, 226 TransitionsBefore, 59 TransitionsAfterwards, 3276 CoEnabledTransitionPairs, 8 FixpointIterations, 141 TrivialSequentialCompositions, 67 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 8 ConcurrentYvCompositions, 12 ChoiceCompositions, 247 TotalNumberOfCompositions, 5037 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4150, positive: 4083, positive conditional: 0, positive unconditional: 4083, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1953, positive: 1936, positive conditional: 0, positive unconditional: 1936, 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: 1953, positive: 1926, positive conditional: 0, positive unconditional: 1926, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 27, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1828, positive: 439, positive conditional: 0, positive unconditional: 439, negative: 1389, negative conditional: 0, negative unconditional: 1389, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4150, positive: 2147, positive conditional: 0, positive unconditional: 2147, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 1953, unknown conditional: 0, unknown unconditional: 1953] , Statistics on independence cache: Total cache size (in pairs): 176, Positive cache size: 170, Positive conditional cache size: 0, Positive unconditional cache size: 170, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - 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: 135]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 59]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 59]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 127]: 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 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 129]: 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 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - TimeoutResultAtElement [Line: 128]: 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 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 9ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 255 locations, 41 error locations. Started 1 CEGAR loops. OverallTime: 833280.9ms, OverallIterations: 29, TraceHistogramMax: 20, EmptinessCheckTime: 43.3ms, AutomataDifference: 559619.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 38366.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1214 SDtfs, 21211 SDslu, 10070 SDs, 0 SdLazy, 16319 SolverSat, 1887 SolverUnsat, 56 SolverUnknown, 0 SolverNotchecked, 210844.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 653 GetRequests, 337 SyntacticMatches, 6 SemanticMatches, 310 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 382111.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1566occurred in iteration=2, InterpolantAutomatonStates: 260, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1375.2ms AutomataMinimizationTime, 28 MinimizatonAttempts, 29471 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 332.6ms SsaConstructionTime, 2471.5ms SatisfiabilityAnalysisTime, 192994.6ms InterpolantComputationTime, 316 NumberOfCodeBlocks, 303 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 576 ConstructedInterpolants, 72 QuantifiedInterpolants, 12207 SizeOfPredicates, 186 NumberOfNonLiveVariables, 3026 ConjunctsInSsa, 327 ConjunctsInUnsatCore, 56 InterpolantComputations, 42 PerfectInterpolantSequences, 74/846 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