/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-more-max-array-hom.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:58:12,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:58:12,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:58:12,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:58:12,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:58:12,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:58:12,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:58:12,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:58:12,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:58:12,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:58:12,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:58:12,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:58:12,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:58:12,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:58:12,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:58:12,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:58:12,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:58:12,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:58:12,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:58:12,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:58:12,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:58:12,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:58:12,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:58:12,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:58:12,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:58:12,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:58:12,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:58:12,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:58:12,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:58:12,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:58:12,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:58:12,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:58:12,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:58:12,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:58:12,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:58:12,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:58:12,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:58:12,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:58:12,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:58:12,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:58:12,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:58:12,799 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:58:12,822 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:58:12,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:58:12,824 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:58:12,824 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:58:12,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:58:12,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:58:12,825 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:58:12,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:58:12,825 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:58:12,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:58:12,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:58:12,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:58:12,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:58:12,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:58:12,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:58:12,826 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:58:12,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:58:12,826 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:58:12,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:58:12,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:58:12,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:58:12,827 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:58:12,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:58:12,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:58:12,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:58:12,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:58:12,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:58:12,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:58:12,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:58:12,828 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:58:12,828 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:58:12,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:58:13,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:58:13,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:58:13,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:58:13,051 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:58:13,052 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:58:13,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-max-array-hom.wvr.c [2022-09-16 11:58:13,101 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c5f5d759/027938e759bd4475b6ff6448f3bd97da/FLAG718f71237 [2022-09-16 11:58:13,472 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:58:13,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-max-array-hom.wvr.c [2022-09-16 11:58:13,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c5f5d759/027938e759bd4475b6ff6448f3bd97da/FLAG718f71237 [2022-09-16 11:58:13,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c5f5d759/027938e759bd4475b6ff6448f3bd97da [2022-09-16 11:58:13,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:58:13,499 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:58:13,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:58:13,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:58:13,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:58:13,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:58:13" (1/1) ... [2022-09-16 11:58:13,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aa116a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:13, skipping insertion in model container [2022-09-16 11:58:13,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:58:13" (1/1) ... [2022-09-16 11:58:13,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:58:13,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:58:13,668 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-max-array-hom.wvr.c[2586,2599] [2022-09-16 11:58:13,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:58:13,681 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:58:13,698 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-max-array-hom.wvr.c[2586,2599] [2022-09-16 11:58:13,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:58:13,711 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:58:13,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:13 WrapperNode [2022-09-16 11:58:13,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:58:13,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:58:13,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:58:13,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:58:13,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:13" (1/1) ... [2022-09-16 11:58:13,723 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:13" (1/1) ... [2022-09-16 11:58:13,749 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 108 [2022-09-16 11:58:13,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:58:13,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:58:13,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:58:13,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:58:13,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:13" (1/1) ... [2022-09-16 11:58:13,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:13" (1/1) ... [2022-09-16 11:58:13,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:13" (1/1) ... [2022-09-16 11:58:13,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:13" (1/1) ... [2022-09-16 11:58:13,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:13" (1/1) ... [2022-09-16 11:58:13,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:13" (1/1) ... [2022-09-16 11:58:13,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:13" (1/1) ... [2022-09-16 11:58:13,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:58:13,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:58:13,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:58:13,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:58:13,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:13" (1/1) ... [2022-09-16 11:58:13,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:58:13,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:13,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-16 11:58:13,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-16 11:58:13,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:58:13,833 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:58:13,833 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:58:13,833 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:58:13,833 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:58:13,833 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:58:13,834 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:58:13,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:58:13,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:58:13,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:58:13,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:58:13,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:58:13,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:58:13,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:58:13,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:58:13,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:58:13,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:58:13,839 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:58:13,948 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:58:13,949 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:58:14,190 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:58:14,236 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:58:14,236 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-16 11:58:14,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:58:14 BoogieIcfgContainer [2022-09-16 11:58:14,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:58:14,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:58:14,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:58:14,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:58:14,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:58:13" (1/3) ... [2022-09-16 11:58:14,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eabcc6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:58:14, skipping insertion in model container [2022-09-16 11:58:14,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:58:13" (2/3) ... [2022-09-16 11:58:14,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eabcc6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:58:14, skipping insertion in model container [2022-09-16 11:58:14,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:58:14" (3/3) ... [2022-09-16 11:58:14,244 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array-hom.wvr.c [2022-09-16 11:58:14,260 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:58:14,260 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-09-16 11:58:14,260 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:58:14,317 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:58:14,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 174 transitions, 372 flow [2022-09-16 11:58:14,422 INFO L130 PetriNetUnfolder]: 13/171 cut-off events. [2022-09-16 11:58:14,423 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:58:14,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 171 events. 13/171 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 137 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 125. Up to 2 conditions per place. [2022-09-16 11:58:14,426 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 174 transitions, 372 flow [2022-09-16 11:58:14,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 145 transitions, 305 flow [2022-09-16 11:58:14,446 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:58:14,452 INFO L357 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@29153e52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:58:14,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-09-16 11:58:14,469 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2022-09-16 11:58:14,469 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:58:14,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:14,470 INFO L208 CegarLoopForPetriNet]: 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, 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, 1, 1, 1, 1] [2022-09-16 11:58:14,471 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:14,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:14,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1285860693, now seen corresponding path program 1 times [2022-09-16 11:58:14,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:14,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759494029] [2022-09-16 11:58:14,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:14,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:14,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:14,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:14,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759494029] [2022-09-16 11:58:14,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759494029] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:14,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:58:14,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:58:14,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712234295] [2022-09-16 11:58:14,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:14,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:58:14,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:14,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:58:14,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:58:14,730 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 174 [2022-09-16 11:58:14,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 145 transitions, 305 flow. Second operand has 4 states, 4 states have (on average 145.5) internal successors, (582), 4 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:14,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:14,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 174 [2022-09-16 11:58:14,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:14,928 INFO L130 PetriNetUnfolder]: 79/584 cut-off events. [2022-09-16 11:58:14,928 INFO L131 PetriNetUnfolder]: For 88/90 co-relation queries the response was YES. [2022-09-16 11:58:14,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 773 conditions, 584 events. 79/584 cut-off events. For 88/90 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2922 event pairs, 30 based on Foata normal form. 72/538 useless extension candidates. Maximal degree in co-relation 286. Up to 69 conditions per place. [2022-09-16 11:58:14,936 INFO L137 encePairwiseOnDemand]: 161/174 looper letters, 32 selfloop transitions, 4 changer transitions 3/154 dead transitions. [2022-09-16 11:58:14,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 154 transitions, 410 flow [2022-09-16 11:58:14,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:58:14,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:58:14,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 770 transitions. [2022-09-16 11:58:14,953 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8850574712643678 [2022-09-16 11:58:14,954 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 770 transitions. [2022-09-16 11:58:14,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 770 transitions. [2022-09-16 11:58:14,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:14,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 770 transitions. [2022-09-16 11:58:14,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 154.0) internal successors, (770), 5 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) [2022-09-16 11:58:14,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:14,971 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:14,973 INFO L175 Difference]: Start difference. First operand has 144 places, 145 transitions, 305 flow. Second operand 5 states and 770 transitions. [2022-09-16 11:58:14,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 154 transitions, 410 flow [2022-09-16 11:58:14,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 154 transitions, 392 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:58:14,981 INFO L231 Difference]: Finished difference. Result has 146 places, 138 transitions, 306 flow [2022-09-16 11:58:14,982 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=146, PETRI_TRANSITIONS=138} [2022-09-16 11:58:14,985 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 2 predicate places. [2022-09-16 11:58:14,985 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 138 transitions, 306 flow [2022-09-16 11:58:14,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.5) internal successors, (582), 4 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:14,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:14,986 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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, 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, 1, 1, 1] [2022-09-16 11:58:14,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:58:14,987 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:14,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:14,988 INFO L85 PathProgramCache]: Analyzing trace with hash 571824346, now seen corresponding path program 1 times [2022-09-16 11:58:14,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:14,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868864474] [2022-09-16 11:58:14,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:14,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:15,097 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:15,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:15,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868864474] [2022-09-16 11:58:15,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868864474] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:15,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786819403] [2022-09-16 11:58:15,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:15,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:15,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:15,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:58:15,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:58:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:15,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:58:15,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:15,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:15,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:58:15,330 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:15,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786819403] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:58:15,331 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:58:15,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:58:15,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904804928] [2022-09-16 11:58:15,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:58:15,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:58:15,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:15,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:58:15,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:58:15,335 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 174 [2022-09-16 11:58:15,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 138 transitions, 306 flow. Second operand has 12 states, 12 states have (on average 146.66666666666666) internal successors, (1760), 12 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:15,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:15,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 174 [2022-09-16 11:58:15,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:15,711 INFO L130 PetriNetUnfolder]: 196/1377 cut-off events. [2022-09-16 11:58:15,711 INFO L131 PetriNetUnfolder]: For 71/76 co-relation queries the response was YES. [2022-09-16 11:58:15,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1787 conditions, 1377 events. 196/1377 cut-off events. For 71/76 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9102 event pairs, 75 based on Foata normal form. 3/1100 useless extension candidates. Maximal degree in co-relation 1384. Up to 70 conditions per place. [2022-09-16 11:58:15,720 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 68 selfloop transitions, 18 changer transitions 0/201 dead transitions. [2022-09-16 11:58:15,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 201 transitions, 650 flow [2022-09-16 11:58:15,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:58:15,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:58:15,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2681 transitions. [2022-09-16 11:58:15,724 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8560025542784163 [2022-09-16 11:58:15,724 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2681 transitions. [2022-09-16 11:58:15,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2681 transitions. [2022-09-16 11:58:15,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:15,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2681 transitions. [2022-09-16 11:58:15,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 148.94444444444446) internal successors, (2681), 18 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:15,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:15,735 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:15,735 INFO L175 Difference]: Start difference. First operand has 146 places, 138 transitions, 306 flow. Second operand 18 states and 2681 transitions. [2022-09-16 11:58:15,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 201 transitions, 650 flow [2022-09-16 11:58:15,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 201 transitions, 648 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:58:15,741 INFO L231 Difference]: Finished difference. Result has 163 places, 150 transitions, 410 flow [2022-09-16 11:58:15,742 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=410, PETRI_PLACES=163, PETRI_TRANSITIONS=150} [2022-09-16 11:58:15,742 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 19 predicate places. [2022-09-16 11:58:15,742 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 150 transitions, 410 flow [2022-09-16 11:58:15,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 146.66666666666666) internal successors, (1760), 12 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:15,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:15,744 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 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, 1, 1] [2022-09-16 11:58:15,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:58:15,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:15,960 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:15,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:15,960 INFO L85 PathProgramCache]: Analyzing trace with hash 546685871, now seen corresponding path program 1 times [2022-09-16 11:58:15,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:15,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768743787] [2022-09-16 11:58:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:15,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:16,034 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:16,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:16,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768743787] [2022-09-16 11:58:16,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768743787] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:16,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769699452] [2022-09-16 11:58:16,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:16,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:16,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:16,038 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:58:16,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:58:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:16,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:58:16,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:16,151 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:16,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:58:16,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769699452] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:16,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:58:16,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:58:16,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793624674] [2022-09-16 11:58:16,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:16,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:58:16,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:16,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:58:16,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:58:16,158 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 174 [2022-09-16 11:58:16,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 150 transitions, 410 flow. Second operand has 6 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:16,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:16,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 174 [2022-09-16 11:58:16,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:16,348 INFO L130 PetriNetUnfolder]: 196/1373 cut-off events. [2022-09-16 11:58:16,348 INFO L131 PetriNetUnfolder]: For 107/112 co-relation queries the response was YES. [2022-09-16 11:58:16,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1805 conditions, 1373 events. 196/1373 cut-off events. For 107/112 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 9120 event pairs, 75 based on Foata normal form. 4/1097 useless extension candidates. Maximal degree in co-relation 1428. Up to 240 conditions per place. [2022-09-16 11:58:16,360 INFO L137 encePairwiseOnDemand]: 169/174 looper letters, 33 selfloop transitions, 11 changer transitions 0/159 dead transitions. [2022-09-16 11:58:16,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 159 transitions, 505 flow [2022-09-16 11:58:16,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:58:16,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:58:16,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1044 transitions. [2022-09-16 11:58:16,362 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-09-16 11:58:16,362 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1044 transitions. [2022-09-16 11:58:16,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1044 transitions. [2022-09-16 11:58:16,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:16,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1044 transitions. [2022-09-16 11:58:16,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:16,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:16,366 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:16,366 INFO L175 Difference]: Start difference. First operand has 163 places, 150 transitions, 410 flow. Second operand 7 states and 1044 transitions. [2022-09-16 11:58:16,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 159 transitions, 505 flow [2022-09-16 11:58:16,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 159 transitions, 473 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 11:58:16,378 INFO L231 Difference]: Finished difference. Result has 159 places, 146 transitions, 373 flow [2022-09-16 11:58:16,379 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=373, PETRI_PLACES=159, PETRI_TRANSITIONS=146} [2022-09-16 11:58:16,379 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 15 predicate places. [2022-09-16 11:58:16,379 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 146 transitions, 373 flow [2022-09-16 11:58:16,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:16,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:16,380 INFO L208 CegarLoopForPetriNet]: 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:16,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:58:16,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 11:58:16,596 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:16,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:16,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1226047605, now seen corresponding path program 1 times [2022-09-16 11:58:16,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:16,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691674225] [2022-09-16 11:58:16,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:16,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:16,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:16,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691674225] [2022-09-16 11:58:16,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691674225] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:16,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:58:16,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:58:16,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929969292] [2022-09-16 11:58:16,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:16,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:58:16,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:16,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:58:16,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:58:16,672 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-09-16 11:58:16,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 146 transitions, 373 flow. Second operand has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:16,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:16,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-09-16 11:58:16,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:17,098 INFO L130 PetriNetUnfolder]: 1201/4528 cut-off events. [2022-09-16 11:58:17,098 INFO L131 PetriNetUnfolder]: For 102/127 co-relation queries the response was YES. [2022-09-16 11:58:17,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6892 conditions, 4528 events. 1201/4528 cut-off events. For 102/127 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 40976 event pairs, 515 based on Foata normal form. 5/3648 useless extension candidates. Maximal degree in co-relation 5504. Up to 1081 conditions per place. [2022-09-16 11:58:17,132 INFO L137 encePairwiseOnDemand]: 168/174 looper letters, 36 selfloop transitions, 4 changer transitions 0/168 dead transitions. [2022-09-16 11:58:17,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 168 transitions, 508 flow [2022-09-16 11:58:17,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:58:17,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:58:17,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 772 transitions. [2022-09-16 11:58:17,134 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8873563218390804 [2022-09-16 11:58:17,134 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 772 transitions. [2022-09-16 11:58:17,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 772 transitions. [2022-09-16 11:58:17,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:17,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 772 transitions. [2022-09-16 11:58:17,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 154.4) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:17,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:17,137 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:17,137 INFO L175 Difference]: Start difference. First operand has 159 places, 146 transitions, 373 flow. Second operand 5 states and 772 transitions. [2022-09-16 11:58:17,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 168 transitions, 508 flow [2022-09-16 11:58:17,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 168 transitions, 494 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:58:17,142 INFO L231 Difference]: Finished difference. Result has 161 places, 149 transitions, 389 flow [2022-09-16 11:58:17,142 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=161, PETRI_TRANSITIONS=149} [2022-09-16 11:58:17,143 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 17 predicate places. [2022-09-16 11:58:17,144 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 149 transitions, 389 flow [2022-09-16 11:58:17,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:17,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:17,144 INFO L208 CegarLoopForPetriNet]: 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, 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, 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] [2022-09-16 11:58:17,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:58:17,145 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:17,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:17,145 INFO L85 PathProgramCache]: Analyzing trace with hash 793065980, now seen corresponding path program 1 times [2022-09-16 11:58:17,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:17,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638939474] [2022-09-16 11:58:17,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:17,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:17,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:17,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:17,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638939474] [2022-09-16 11:58:17,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638939474] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:17,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:58:17,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:58:17,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189281454] [2022-09-16 11:58:17,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:17,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:58:17,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:17,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:58:17,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:58:17,244 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-09-16 11:58:17,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 149 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:17,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:17,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-09-16 11:58:17,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:17,703 INFO L130 PetriNetUnfolder]: 1876/4403 cut-off events. [2022-09-16 11:58:17,704 INFO L131 PetriNetUnfolder]: For 482/487 co-relation queries the response was YES. [2022-09-16 11:58:17,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8403 conditions, 4403 events. 1876/4403 cut-off events. For 482/487 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 38139 event pairs, 950 based on Foata normal form. 0/3783 useless extension candidates. Maximal degree in co-relation 6711. Up to 1826 conditions per place. [2022-09-16 11:58:17,739 INFO L137 encePairwiseOnDemand]: 168/174 looper letters, 35 selfloop transitions, 4 changer transitions 0/170 dead transitions. [2022-09-16 11:58:17,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 170 transitions, 519 flow [2022-09-16 11:58:17,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:58:17,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:58:17,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 771 transitions. [2022-09-16 11:58:17,741 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8862068965517241 [2022-09-16 11:58:17,741 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 771 transitions. [2022-09-16 11:58:17,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 771 transitions. [2022-09-16 11:58:17,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:17,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 771 transitions. [2022-09-16 11:58:17,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 154.2) internal successors, (771), 5 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) [2022-09-16 11:58:17,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:17,744 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:17,744 INFO L175 Difference]: Start difference. First operand has 161 places, 149 transitions, 389 flow. Second operand 5 states and 771 transitions. [2022-09-16 11:58:17,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 170 transitions, 519 flow [2022-09-16 11:58:17,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 170 transitions, 517 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:58:17,748 INFO L231 Difference]: Finished difference. Result has 167 places, 152 transitions, 417 flow [2022-09-16 11:58:17,748 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=417, PETRI_PLACES=167, PETRI_TRANSITIONS=152} [2022-09-16 11:58:17,750 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 23 predicate places. [2022-09-16 11:58:17,751 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 152 transitions, 417 flow [2022-09-16 11:58:17,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:17,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:17,751 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:17,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:58:17,751 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:17,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:17,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1478808490, now seen corresponding path program 1 times [2022-09-16 11:58:17,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:17,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359272332] [2022-09-16 11:58:17,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:17,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:17,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:17,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:17,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359272332] [2022-09-16 11:58:17,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359272332] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:17,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32892302] [2022-09-16 11:58:17,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:17,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:17,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:17,813 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:58:17,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:58:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:17,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:58:17,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:18,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 11:58:18,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:58:18,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32892302] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:18,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:58:18,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-09-16 11:58:18,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997720373] [2022-09-16 11:58:18,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:18,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:58:18,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:18,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:58:18,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:58:18,020 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 174 [2022-09-16 11:58:18,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 152 transitions, 417 flow. Second operand has 7 states, 7 states have (on average 136.57142857142858) internal successors, (956), 7 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:18,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:18,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 174 [2022-09-16 11:58:18,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:18,813 INFO L130 PetriNetUnfolder]: 1933/7429 cut-off events. [2022-09-16 11:58:18,813 INFO L131 PetriNetUnfolder]: For 1028/1028 co-relation queries the response was YES. [2022-09-16 11:58:18,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12946 conditions, 7429 events. 1933/7429 cut-off events. For 1028/1028 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 76190 event pairs, 1236 based on Foata normal form. 0/6119 useless extension candidates. Maximal degree in co-relation 12248. Up to 2609 conditions per place. [2022-09-16 11:58:18,917 INFO L137 encePairwiseOnDemand]: 165/174 looper letters, 53 selfloop transitions, 8 changer transitions 0/173 dead transitions. [2022-09-16 11:58:18,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 173 transitions, 592 flow [2022-09-16 11:58:18,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:58:18,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:58:18,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1126 transitions. [2022-09-16 11:58:18,922 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8089080459770115 [2022-09-16 11:58:18,922 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1126 transitions. [2022-09-16 11:58:18,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1126 transitions. [2022-09-16 11:58:18,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:18,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1126 transitions. [2022-09-16 11:58:18,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:18,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:18,927 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:18,927 INFO L175 Difference]: Start difference. First operand has 167 places, 152 transitions, 417 flow. Second operand 8 states and 1126 transitions. [2022-09-16 11:58:18,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 173 transitions, 592 flow [2022-09-16 11:58:18,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 173 transitions, 590 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:58:18,937 INFO L231 Difference]: Finished difference. Result has 176 places, 154 transitions, 449 flow [2022-09-16 11:58:18,938 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=449, PETRI_PLACES=176, PETRI_TRANSITIONS=154} [2022-09-16 11:58:18,940 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 32 predicate places. [2022-09-16 11:58:18,940 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 154 transitions, 449 flow [2022-09-16 11:58:18,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.57142857142858) internal successors, (956), 7 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:18,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:18,941 INFO L208 CegarLoopForPetriNet]: 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, 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, 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, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:18,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 11:58:19,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:19,147 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:19,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:19,148 INFO L85 PathProgramCache]: Analyzing trace with hash -443291067, now seen corresponding path program 1 times [2022-09-16 11:58:19,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:19,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381219679] [2022-09-16 11:58:19,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:19,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:19,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:19,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:19,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381219679] [2022-09-16 11:58:19,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381219679] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:19,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:58:19,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:58:19,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814404803] [2022-09-16 11:58:19,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:19,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:58:19,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:19,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:58:19,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:58:19,223 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 174 [2022-09-16 11:58:19,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 154 transitions, 449 flow. Second operand has 8 states, 8 states have (on average 131.375) internal successors, (1051), 8 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:19,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:19,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 174 [2022-09-16 11:58:19,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:19,883 INFO L130 PetriNetUnfolder]: 2394/5550 cut-off events. [2022-09-16 11:58:19,883 INFO L131 PetriNetUnfolder]: For 971/1004 co-relation queries the response was YES. [2022-09-16 11:58:19,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10743 conditions, 5550 events. 2394/5550 cut-off events. For 971/1004 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 48766 event pairs, 1914 based on Foata normal form. 33/4653 useless extension candidates. Maximal degree in co-relation 9905. Up to 3377 conditions per place. [2022-09-16 11:58:19,916 INFO L137 encePairwiseOnDemand]: 161/174 looper letters, 70 selfloop transitions, 12 changer transitions 0/192 dead transitions. [2022-09-16 11:58:19,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 192 transitions, 705 flow [2022-09-16 11:58:19,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:58:19,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:58:19,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1496 transitions. [2022-09-16 11:58:19,919 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7816091954022989 [2022-09-16 11:58:19,919 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1496 transitions. [2022-09-16 11:58:19,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1496 transitions. [2022-09-16 11:58:19,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:19,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1496 transitions. [2022-09-16 11:58:19,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:19,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 174.0) internal successors, (2088), 12 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:19,924 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 174.0) internal successors, (2088), 12 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:19,924 INFO L175 Difference]: Start difference. First operand has 176 places, 154 transitions, 449 flow. Second operand 11 states and 1496 transitions. [2022-09-16 11:58:19,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 192 transitions, 705 flow [2022-09-16 11:58:19,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 192 transitions, 695 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:58:19,928 INFO L231 Difference]: Finished difference. Result has 187 places, 159 transitions, 498 flow [2022-09-16 11:58:19,929 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=498, PETRI_PLACES=187, PETRI_TRANSITIONS=159} [2022-09-16 11:58:19,929 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 43 predicate places. [2022-09-16 11:58:19,929 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 159 transitions, 498 flow [2022-09-16 11:58:19,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 131.375) internal successors, (1051), 8 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:19,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:19,930 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 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, 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, 1] [2022-09-16 11:58:19,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:58:19,930 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:19,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:19,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1434589927, now seen corresponding path program 1 times [2022-09-16 11:58:19,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:19,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285287230] [2022-09-16 11:58:19,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:19,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:19,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:19,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:19,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285287230] [2022-09-16 11:58:19,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285287230] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:19,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624014416] [2022-09-16 11:58:19,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:19,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:19,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:19,969 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:58:20,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:58:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:20,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:58:20,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:20,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:20,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:58:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:20,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624014416] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:58:20,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:58:20,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:58:20,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818289431] [2022-09-16 11:58:20,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:58:20,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:58:20,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:20,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:58:20,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:58:20,149 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-09-16 11:58:20,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 159 transitions, 498 flow. Second operand has 12 states, 12 states have (on average 148.75) internal successors, (1785), 12 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:20,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:20,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-09-16 11:58:20,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:21,480 INFO L130 PetriNetUnfolder]: 4125/9240 cut-off events. [2022-09-16 11:58:21,480 INFO L131 PetriNetUnfolder]: For 1223/1227 co-relation queries the response was YES. [2022-09-16 11:58:21,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19362 conditions, 9240 events. 4125/9240 cut-off events. For 1223/1227 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 87350 event pairs, 510 based on Foata normal form. 171/8692 useless extension candidates. Maximal degree in co-relation 17810. Up to 1578 conditions per place. [2022-09-16 11:58:21,553 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 102 selfloop transitions, 18 changer transitions 0/258 dead transitions. [2022-09-16 11:58:21,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 258 transitions, 1010 flow [2022-09-16 11:58:21,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:58:21,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:58:21,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2751 transitions. [2022-09-16 11:58:21,557 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8783524904214559 [2022-09-16 11:58:21,557 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2751 transitions. [2022-09-16 11:58:21,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2751 transitions. [2022-09-16 11:58:21,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:21,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2751 transitions. [2022-09-16 11:58:21,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 152.83333333333334) internal successors, (2751), 18 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:21,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:21,566 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:21,566 INFO L175 Difference]: Start difference. First operand has 187 places, 159 transitions, 498 flow. Second operand 18 states and 2751 transitions. [2022-09-16 11:58:21,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 258 transitions, 1010 flow [2022-09-16 11:58:21,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 258 transitions, 1000 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:58:21,575 INFO L231 Difference]: Finished difference. Result has 204 places, 171 transitions, 594 flow [2022-09-16 11:58:21,576 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=594, PETRI_PLACES=204, PETRI_TRANSITIONS=171} [2022-09-16 11:58:21,576 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 60 predicate places. [2022-09-16 11:58:21,576 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 171 transitions, 594 flow [2022-09-16 11:58:21,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 148.75) internal successors, (1785), 12 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:21,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:21,577 INFO L208 CegarLoopForPetriNet]: 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, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:21,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-09-16 11:58:21,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:21,791 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:21,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:21,792 INFO L85 PathProgramCache]: Analyzing trace with hash -857120665, now seen corresponding path program 1 times [2022-09-16 11:58:21,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:21,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119852355] [2022-09-16 11:58:21,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:21,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:21,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:21,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:21,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119852355] [2022-09-16 11:58:21,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119852355] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:21,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:58:21,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:58:21,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278863115] [2022-09-16 11:58:21,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:21,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:58:21,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:21,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:58:21,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:58:21,850 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 174 [2022-09-16 11:58:21,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 171 transitions, 594 flow. Second operand has 6 states, 6 states have (on average 140.5) internal successors, (843), 6 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:21,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:21,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 174 [2022-09-16 11:58:21,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:23,690 INFO L130 PetriNetUnfolder]: 6903/15336 cut-off events. [2022-09-16 11:58:23,690 INFO L131 PetriNetUnfolder]: For 2974/2978 co-relation queries the response was YES. [2022-09-16 11:58:23,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31148 conditions, 15336 events. 6903/15336 cut-off events. For 2974/2978 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 153272 event pairs, 1153 based on Foata normal form. 397/13493 useless extension candidates. Maximal degree in co-relation 29645. Up to 5132 conditions per place. [2022-09-16 11:58:23,796 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 33 selfloop transitions, 8 changer transitions 0/181 dead transitions. [2022-09-16 11:58:23,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 181 transitions, 695 flow [2022-09-16 11:58:23,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:58:23,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:58:23,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 866 transitions. [2022-09-16 11:58:23,799 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8295019157088123 [2022-09-16 11:58:23,799 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 866 transitions. [2022-09-16 11:58:23,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 866 transitions. [2022-09-16 11:58:23,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:23,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 866 transitions. [2022-09-16 11:58:23,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 144.33333333333334) internal successors, (866), 6 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:23,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:23,802 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:23,803 INFO L175 Difference]: Start difference. First operand has 204 places, 171 transitions, 594 flow. Second operand 6 states and 866 transitions. [2022-09-16 11:58:23,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 181 transitions, 695 flow [2022-09-16 11:58:23,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 181 transitions, 649 flow, removed 15 selfloop flow, removed 7 redundant places. [2022-09-16 11:58:23,861 INFO L231 Difference]: Finished difference. Result has 200 places, 169 transitions, 555 flow [2022-09-16 11:58:23,862 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=555, PETRI_PLACES=200, PETRI_TRANSITIONS=169} [2022-09-16 11:58:23,862 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 56 predicate places. [2022-09-16 11:58:23,863 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 169 transitions, 555 flow [2022-09-16 11:58:23,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 140.5) internal successors, (843), 6 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:23,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:23,863 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 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, 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] [2022-09-16 11:58:23,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:58:23,863 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:23,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:23,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1522615287, now seen corresponding path program 1 times [2022-09-16 11:58:23,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:23,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758342200] [2022-09-16 11:58:23,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:23,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:23,906 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:23,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:23,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758342200] [2022-09-16 11:58:23,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758342200] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:23,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573844391] [2022-09-16 11:58:23,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:23,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:23,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:23,908 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:58:23,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:58:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:23,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:58:23,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:23,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:23,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:58:23,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573844391] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:23,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:58:23,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:58:23,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692921776] [2022-09-16 11:58:23,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:23,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:58:23,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:23,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:58:23,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:58:23,989 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-09-16 11:58:23,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 169 transitions, 555 flow. Second operand has 6 states, 6 states have (on average 148.5) internal successors, (891), 6 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:23,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:23,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-09-16 11:58:23,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:24,918 INFO L130 PetriNetUnfolder]: 3672/8217 cut-off events. [2022-09-16 11:58:24,919 INFO L131 PetriNetUnfolder]: For 1729/1733 co-relation queries the response was YES. [2022-09-16 11:58:24,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17950 conditions, 8217 events. 3672/8217 cut-off events. For 1729/1733 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 77374 event pairs, 210 based on Foata normal form. 228/8006 useless extension candidates. Maximal degree in co-relation 16579. Up to 2432 conditions per place. [2022-09-16 11:58:24,985 INFO L137 encePairwiseOnDemand]: 169/174 looper letters, 44 selfloop transitions, 11 changer transitions 0/191 dead transitions. [2022-09-16 11:58:24,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 191 transitions, 716 flow [2022-09-16 11:58:24,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:58:24,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:58:24,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1069 transitions. [2022-09-16 11:58:24,989 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8776683087027914 [2022-09-16 11:58:24,989 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1069 transitions. [2022-09-16 11:58:24,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1069 transitions. [2022-09-16 11:58:24,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:24,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1069 transitions. [2022-09-16 11:58:24,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 152.71428571428572) internal successors, (1069), 7 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:24,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:24,993 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:24,993 INFO L175 Difference]: Start difference. First operand has 200 places, 169 transitions, 555 flow. Second operand 7 states and 1069 transitions. [2022-09-16 11:58:24,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 191 transitions, 716 flow [2022-09-16 11:58:25,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 191 transitions, 700 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:58:25,022 INFO L231 Difference]: Finished difference. Result has 196 places, 165 transitions, 542 flow [2022-09-16 11:58:25,022 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=542, PETRI_PLACES=196, PETRI_TRANSITIONS=165} [2022-09-16 11:58:25,023 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 52 predicate places. [2022-09-16 11:58:25,023 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 165 transitions, 542 flow [2022-09-16 11:58:25,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.5) internal successors, (891), 6 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:25,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:25,024 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 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, 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, 1, 1, 1, 1] [2022-09-16 11:58:25,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-09-16 11:58:25,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-09-16 11:58:25,232 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:25,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:25,232 INFO L85 PathProgramCache]: Analyzing trace with hash 649583983, now seen corresponding path program 1 times [2022-09-16 11:58:25,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:25,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744781984] [2022-09-16 11:58:25,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:25,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:58:25,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:25,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744781984] [2022-09-16 11:58:25,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744781984] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:25,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197641587] [2022-09-16 11:58:25,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:25,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:25,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:25,284 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:58:25,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:58:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:25,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:58:25,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:25,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:25,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:58:25,666 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:25,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197641587] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:58:25,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:58:25,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-09-16 11:58:25,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729839093] [2022-09-16 11:58:25,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:58:25,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:58:25,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:25,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:58:25,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:58:25,709 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 174 [2022-09-16 11:58:25,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 165 transitions, 542 flow. Second operand has 23 states, 23 states have (on average 127.65217391304348) internal successors, (2936), 23 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:25,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:25,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 174 [2022-09-16 11:58:25,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:28,263 INFO L130 PetriNetUnfolder]: 6185/15363 cut-off events. [2022-09-16 11:58:28,263 INFO L131 PetriNetUnfolder]: For 3915/4074 co-relation queries the response was YES. [2022-09-16 11:58:28,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32406 conditions, 15363 events. 6185/15363 cut-off events. For 3915/4074 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 160735 event pairs, 1792 based on Foata normal form. 169/14689 useless extension candidates. Maximal degree in co-relation 30767. Up to 2690 conditions per place. [2022-09-16 11:58:28,443 INFO L137 encePairwiseOnDemand]: 156/174 looper letters, 179 selfloop transitions, 33 changer transitions 0/320 dead transitions. [2022-09-16 11:58:28,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 320 transitions, 1414 flow [2022-09-16 11:58:28,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-09-16 11:58:28,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-09-16 11:58:28,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3679 transitions. [2022-09-16 11:58:28,451 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7551313628899836 [2022-09-16 11:58:28,451 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3679 transitions. [2022-09-16 11:58:28,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3679 transitions. [2022-09-16 11:58:28,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:28,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3679 transitions. [2022-09-16 11:58:28,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 131.39285714285714) internal successors, (3679), 28 states have internal predecessors, (3679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:28,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:28,467 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:28,467 INFO L175 Difference]: Start difference. First operand has 196 places, 165 transitions, 542 flow. Second operand 28 states and 3679 transitions. [2022-09-16 11:58:28,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 320 transitions, 1414 flow [2022-09-16 11:58:28,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 320 transitions, 1400 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:58:28,516 INFO L231 Difference]: Finished difference. Result has 224 places, 180 transitions, 689 flow [2022-09-16 11:58:28,517 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=689, PETRI_PLACES=224, PETRI_TRANSITIONS=180} [2022-09-16 11:58:28,517 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 80 predicate places. [2022-09-16 11:58:28,517 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 180 transitions, 689 flow [2022-09-16 11:58:28,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 127.65217391304348) internal successors, (2936), 23 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:28,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:28,518 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:28,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-16 11:58:28,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:28,721 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:28,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:28,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1722994837, now seen corresponding path program 2 times [2022-09-16 11:58:28,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:28,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120448881] [2022-09-16 11:58:28,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:28,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:28,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:28,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120448881] [2022-09-16 11:58:28,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120448881] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:28,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505965219] [2022-09-16 11:58:28,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:58:28,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:28,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:28,811 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:58:28,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 11:58:28,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:58:28,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:58:28,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:58:28,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:28,955 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:58:28,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:58:29,033 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:58:29,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505965219] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:58:29,033 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:58:29,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:58:29,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102185672] [2022-09-16 11:58:29,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:58:29,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:58:29,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:29,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:58:29,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:58:29,037 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 174 [2022-09-16 11:58:29,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 180 transitions, 689 flow. Second operand has 18 states, 18 states have (on average 132.61111111111111) internal successors, (2387), 18 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:29,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:29,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 174 [2022-09-16 11:58:29,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:31,988 INFO L130 PetriNetUnfolder]: 4950/22268 cut-off events. [2022-09-16 11:58:31,988 INFO L131 PetriNetUnfolder]: For 9014/9386 co-relation queries the response was YES. [2022-09-16 11:58:32,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44646 conditions, 22268 events. 4950/22268 cut-off events. For 9014/9386 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 276314 event pairs, 3594 based on Foata normal form. 374/21059 useless extension candidates. Maximal degree in co-relation 42744. Up to 1785 conditions per place. [2022-09-16 11:58:32,367 INFO L137 encePairwiseOnDemand]: 163/174 looper letters, 136 selfloop transitions, 25 changer transitions 1/287 dead transitions. [2022-09-16 11:58:32,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 287 transitions, 1372 flow [2022-09-16 11:58:32,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 11:58:32,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-16 11:58:32,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3249 transitions. [2022-09-16 11:58:32,374 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7780172413793104 [2022-09-16 11:58:32,374 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3249 transitions. [2022-09-16 11:58:32,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3249 transitions. [2022-09-16 11:58:32,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:32,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3249 transitions. [2022-09-16 11:58:32,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 135.375) internal successors, (3249), 24 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:32,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:32,382 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:32,382 INFO L175 Difference]: Start difference. First operand has 224 places, 180 transitions, 689 flow. Second operand 24 states and 3249 transitions. [2022-09-16 11:58:32,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 287 transitions, 1372 flow [2022-09-16 11:58:32,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 287 transitions, 1321 flow, removed 5 selfloop flow, removed 16 redundant places. [2022-09-16 11:58:32,625 INFO L231 Difference]: Finished difference. Result has 231 places, 184 transitions, 713 flow [2022-09-16 11:58:32,626 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=713, PETRI_PLACES=231, PETRI_TRANSITIONS=184} [2022-09-16 11:58:32,626 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 87 predicate places. [2022-09-16 11:58:32,626 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 184 transitions, 713 flow [2022-09-16 11:58:32,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 132.61111111111111) internal successors, (2387), 18 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:32,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:32,627 INFO L208 CegarLoopForPetriNet]: 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:32,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-16 11:58:32,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:32,844 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:32,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:32,844 INFO L85 PathProgramCache]: Analyzing trace with hash -425118816, now seen corresponding path program 1 times [2022-09-16 11:58:32,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:32,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456625838] [2022-09-16 11:58:32,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:32,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:32,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:32,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:32,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456625838] [2022-09-16 11:58:32,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456625838] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:32,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920102751] [2022-09-16 11:58:32,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:32,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:32,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:32,923 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:58:32,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-16 11:58:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:33,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:58:33,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:58:33,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:58:33,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920102751] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:33,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:58:33,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-09-16 11:58:33,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008642719] [2022-09-16 11:58:33,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:33,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:58:33,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:33,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:58:33,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-09-16 11:58:33,095 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 174 [2022-09-16 11:58:33,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 184 transitions, 713 flow. Second operand has 6 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:33,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:33,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 174 [2022-09-16 11:58:33,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:35,485 INFO L130 PetriNetUnfolder]: 8581/18378 cut-off events. [2022-09-16 11:58:35,485 INFO L131 PetriNetUnfolder]: For 6820/7324 co-relation queries the response was YES. [2022-09-16 11:58:35,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41243 conditions, 18378 events. 8581/18378 cut-off events. For 6820/7324 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 186516 event pairs, 2811 based on Foata normal form. 1021/17969 useless extension candidates. Maximal degree in co-relation 39413. Up to 5291 conditions per place. [2022-09-16 11:58:35,640 INFO L137 encePairwiseOnDemand]: 166/174 looper letters, 52 selfloop transitions, 11 changer transitions 6/216 dead transitions. [2022-09-16 11:58:35,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 216 transitions, 969 flow [2022-09-16 11:58:35,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:58:35,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:58:35,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1003 transitions. [2022-09-16 11:58:35,642 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8234811165845649 [2022-09-16 11:58:35,642 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1003 transitions. [2022-09-16 11:58:35,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1003 transitions. [2022-09-16 11:58:35,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:35,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1003 transitions. [2022-09-16 11:58:35,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 143.28571428571428) internal successors, (1003), 7 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:35,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:35,645 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:35,645 INFO L175 Difference]: Start difference. First operand has 231 places, 184 transitions, 713 flow. Second operand 7 states and 1003 transitions. [2022-09-16 11:58:35,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 216 transitions, 969 flow [2022-09-16 11:58:35,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 216 transitions, 905 flow, removed 2 selfloop flow, removed 18 redundant places. [2022-09-16 11:58:35,733 INFO L231 Difference]: Finished difference. Result has 218 places, 180 transitions, 660 flow [2022-09-16 11:58:35,733 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=660, PETRI_PLACES=218, PETRI_TRANSITIONS=180} [2022-09-16 11:58:35,733 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 74 predicate places. [2022-09-16 11:58:35,733 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 180 transitions, 660 flow [2022-09-16 11:58:35,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:35,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:35,734 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:35,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-16 11:58:35,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-09-16 11:58:35,952 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:35,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:35,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1096624614, now seen corresponding path program 1 times [2022-09-16 11:58:35,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:35,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456787561] [2022-09-16 11:58:35,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:35,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:35,999 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:58:35,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:35,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456787561] [2022-09-16 11:58:35,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456787561] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:35,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772721916] [2022-09-16 11:58:35,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:36,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:36,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:36,017 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:58:36,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-16 11:58:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:36,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:58:36,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:36,111 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:58:36,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:58:36,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772721916] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:36,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:58:36,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:58:36,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86476703] [2022-09-16 11:58:36,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:36,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:58:36,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:36,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:58:36,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:58:36,113 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-09-16 11:58:36,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 180 transitions, 660 flow. Second operand has 6 states, 6 states have (on average 148.33333333333334) internal successors, (890), 6 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:36,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:36,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-09-16 11:58:36,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:37,712 INFO L130 PetriNetUnfolder]: 4350/10768 cut-off events. [2022-09-16 11:58:37,713 INFO L131 PetriNetUnfolder]: For 3535/3567 co-relation queries the response was YES. [2022-09-16 11:58:37,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25100 conditions, 10768 events. 4350/10768 cut-off events. For 3535/3567 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 106384 event pairs, 784 based on Foata normal form. 196/10293 useless extension candidates. Maximal degree in co-relation 25023. Up to 2377 conditions per place. [2022-09-16 11:58:37,788 INFO L137 encePairwiseOnDemand]: 169/174 looper letters, 44 selfloop transitions, 13 changer transitions 0/203 dead transitions. [2022-09-16 11:58:37,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 203 transitions, 830 flow [2022-09-16 11:58:37,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:58:37,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:58:37,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1068 transitions. [2022-09-16 11:58:37,789 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8768472906403941 [2022-09-16 11:58:37,790 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1068 transitions. [2022-09-16 11:58:37,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1068 transitions. [2022-09-16 11:58:37,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:37,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1068 transitions. [2022-09-16 11:58:37,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 152.57142857142858) internal successors, (1068), 7 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:37,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:37,792 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:37,792 INFO L175 Difference]: Start difference. First operand has 218 places, 180 transitions, 660 flow. Second operand 7 states and 1068 transitions. [2022-09-16 11:58:37,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 203 transitions, 830 flow [2022-09-16 11:58:37,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 203 transitions, 806 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-09-16 11:58:37,819 INFO L231 Difference]: Finished difference. Result has 214 places, 178 transitions, 648 flow [2022-09-16 11:58:37,819 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=648, PETRI_PLACES=214, PETRI_TRANSITIONS=178} [2022-09-16 11:58:37,819 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 70 predicate places. [2022-09-16 11:58:37,819 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 178 transitions, 648 flow [2022-09-16 11:58:37,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.33333333333334) internal successors, (890), 6 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:37,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:37,820 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:37,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-09-16 11:58:38,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-09-16 11:58:38,035 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:38,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:38,036 INFO L85 PathProgramCache]: Analyzing trace with hash -631558901, now seen corresponding path program 2 times [2022-09-16 11:58:38,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:38,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310529310] [2022-09-16 11:58:38,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:38,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:38,152 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:38,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:38,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310529310] [2022-09-16 11:58:38,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310529310] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:38,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151557847] [2022-09-16 11:58:38,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:58:38,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:38,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:38,164 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:58:38,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-09-16 11:58:38,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:58:38,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:58:38,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:58:38,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:38,334 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-09-16 11:58:38,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:58:38,444 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-09-16 11:58:38,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151557847] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:58:38,444 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:58:38,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-09-16 11:58:38,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263169393] [2022-09-16 11:58:38,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:58:38,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 11:58:38,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:38,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 11:58:38,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-09-16 11:58:38,446 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 174 [2022-09-16 11:58:38,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 178 transitions, 648 flow. Second operand has 19 states, 19 states have (on average 125.21052631578948) internal successors, (2379), 19 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:38,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:38,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 174 [2022-09-16 11:58:38,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:41,734 INFO L130 PetriNetUnfolder]: 8247/19624 cut-off events. [2022-09-16 11:58:41,735 INFO L131 PetriNetUnfolder]: For 9452/9732 co-relation queries the response was YES. [2022-09-16 11:58:41,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45089 conditions, 19624 events. 8247/19624 cut-off events. For 9452/9732 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 202804 event pairs, 1032 based on Foata normal form. 262/18810 useless extension candidates. Maximal degree in co-relation 42520. Up to 3685 conditions per place. [2022-09-16 11:58:41,874 INFO L137 encePairwiseOnDemand]: 156/174 looper letters, 224 selfloop transitions, 48 changer transitions 0/374 dead transitions. [2022-09-16 11:58:41,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 374 transitions, 1797 flow [2022-09-16 11:58:41,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-09-16 11:58:41,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-09-16 11:58:41,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 5098 transitions. [2022-09-16 11:58:41,878 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7324712643678161 [2022-09-16 11:58:41,878 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 5098 transitions. [2022-09-16 11:58:41,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 5098 transitions. [2022-09-16 11:58:41,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:41,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 5098 transitions. [2022-09-16 11:58:41,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 127.45) internal successors, (5098), 40 states have internal predecessors, (5098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:41,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 174.0) internal successors, (7134), 41 states have internal predecessors, (7134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:41,890 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 174.0) internal successors, (7134), 41 states have internal predecessors, (7134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:41,890 INFO L175 Difference]: Start difference. First operand has 214 places, 178 transitions, 648 flow. Second operand 40 states and 5098 transitions. [2022-09-16 11:58:41,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 374 transitions, 1797 flow [2022-09-16 11:58:41,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 374 transitions, 1757 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-09-16 11:58:41,956 INFO L231 Difference]: Finished difference. Result has 249 places, 189 transitions, 800 flow [2022-09-16 11:58:41,956 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=800, PETRI_PLACES=249, PETRI_TRANSITIONS=189} [2022-09-16 11:58:41,957 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 105 predicate places. [2022-09-16 11:58:41,957 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 189 transitions, 800 flow [2022-09-16 11:58:41,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 125.21052631578948) internal successors, (2379), 19 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:41,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:41,957 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:41,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-09-16 11:58:42,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-09-16 11:58:42,159 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:58:42,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:42,160 INFO L85 PathProgramCache]: Analyzing trace with hash 883836220, now seen corresponding path program 2 times [2022-09-16 11:58:42,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:42,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279875066] [2022-09-16 11:58:42,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:42,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:42,223 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:42,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:42,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279875066] [2022-09-16 11:58:42,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279875066] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:42,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518044262] [2022-09-16 11:58:42,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:58:42,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:42,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:42,232 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:58:42,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-09-16 11:58:42,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:58:42,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:58:42,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:58:42,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:42,377 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-09-16 11:58:42,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:58:42,474 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-09-16 11:58:42,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518044262] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:58:42,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:58:42,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-09-16 11:58:42,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843274475] [2022-09-16 11:58:42,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:58:42,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 11:58:42,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:42,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 11:58:42,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:58:42,477 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 174 [2022-09-16 11:58:42,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 189 transitions, 800 flow. Second operand has 16 states, 16 states have (on average 142.6875) internal successors, (2283), 16 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:42,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:42,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 174 [2022-09-16 11:58:42,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:45,719 INFO L130 PetriNetUnfolder]: 11139/21986 cut-off events. [2022-09-16 11:58:45,719 INFO L131 PetriNetUnfolder]: For 7088/7094 co-relation queries the response was YES. [2022-09-16 11:58:45,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49560 conditions, 21986 events. 11139/21986 cut-off events. For 7088/7094 co-relation queries the response was YES. Maximal size of possible extension queue 925. Compared 221987 event pairs, 528 based on Foata normal form. 284/20653 useless extension candidates. Maximal degree in co-relation 49358. Up to 3075 conditions per place. [2022-09-16 11:58:45,822 INFO L137 encePairwiseOnDemand]: 165/174 looper letters, 0 selfloop transitions, 0 changer transitions 308/308 dead transitions. [2022-09-16 11:58:45,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 308 transitions, 1414 flow [2022-09-16 11:58:45,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-16 11:58:45,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-16 11:58:45,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3214 transitions. [2022-09-16 11:58:45,824 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8396029258098223 [2022-09-16 11:58:45,825 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3214 transitions. [2022-09-16 11:58:45,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3214 transitions. [2022-09-16 11:58:45,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:45,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3214 transitions. [2022-09-16 11:58:45,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 146.0909090909091) internal successors, (3214), 22 states have internal predecessors, (3214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:45,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:45,831 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:45,831 INFO L175 Difference]: Start difference. First operand has 249 places, 189 transitions, 800 flow. Second operand 22 states and 3214 transitions. [2022-09-16 11:58:45,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 308 transitions, 1414 flow [2022-09-16 11:58:45,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 308 transitions, 1343 flow, removed 5 selfloop flow, removed 25 redundant places. [2022-09-16 11:58:45,874 INFO L231 Difference]: Finished difference. Result has 244 places, 0 transitions, 0 flow [2022-09-16 11:58:45,875 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=0, PETRI_PLACES=244, PETRI_TRANSITIONS=0} [2022-09-16 11:58:45,875 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 100 predicate places. [2022-09-16 11:58:45,875 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 0 transitions, 0 flow [2022-09-16 11:58:45,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 142.6875) internal successors, (2283), 16 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:45,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2022-09-16 11:58:45,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-09-16 11:58:45,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-09-16 11:58:45,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-09-16 11:58:45,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-09-16 11:58:45,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-09-16 11:58:45,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-09-16 11:58:45,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-09-16 11:58:45,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2022-09-16 11:58:45,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2022-09-16 11:58:45,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2022-09-16 11:58:45,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-09-16 11:58:45,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-09-16 11:58:45,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-09-16 11:58:45,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-09-16 11:58:45,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-09-16 11:58:45,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-09-16 11:58:45,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-09-16 11:58:46,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-16 11:58:46,096 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:46,099 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:58:46,099 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:58:46,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:58:46 BasicIcfg [2022-09-16 11:58:46,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:58:46,105 INFO L158 Benchmark]: Toolchain (without parser) took 32605.12ms. Allocated memory was 180.4MB in the beginning and 3.9GB in the end (delta: 3.7GB). Free memory was 123.2MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2022-09-16 11:58:46,105 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 180.4MB. Free memory was 139.9MB in the beginning and 139.9MB in the end (delta: 82.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:58:46,105 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.45ms. Allocated memory is still 180.4MB. Free memory was 123.1MB in the beginning and 154.4MB in the end (delta: -31.3MB). Peak memory consumption was 13.1MB. Max. memory is 8.0GB. [2022-09-16 11:58:46,105 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.92ms. Allocated memory is still 180.4MB. Free memory was 154.4MB in the beginning and 152.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:58:46,105 INFO L158 Benchmark]: Boogie Preprocessor took 25.89ms. Allocated memory is still 180.4MB. Free memory was 152.4MB in the beginning and 151.1MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 11:58:46,106 INFO L158 Benchmark]: RCFGBuilder took 461.15ms. Allocated memory is still 180.4MB. Free memory was 150.8MB in the beginning and 130.7MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2022-09-16 11:58:46,106 INFO L158 Benchmark]: TraceAbstraction took 31864.95ms. Allocated memory was 180.4MB in the beginning and 3.9GB in the end (delta: 3.7GB). Free memory was 129.9MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2022-09-16 11:58:46,107 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 180.4MB. Free memory was 139.9MB in the beginning and 139.9MB in the end (delta: 82.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 210.45ms. Allocated memory is still 180.4MB. Free memory was 123.1MB in the beginning and 154.4MB in the end (delta: -31.3MB). Peak memory consumption was 13.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.92ms. Allocated memory is still 180.4MB. Free memory was 154.4MB in the beginning and 152.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.89ms. Allocated memory is still 180.4MB. Free memory was 152.4MB in the beginning and 151.1MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 461.15ms. Allocated memory is still 180.4MB. Free memory was 150.8MB in the beginning and 130.7MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 31864.95ms. Allocated memory was 180.4MB in the beginning and 3.9GB in the end (delta: 3.7GB). Free memory was 129.9MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 204 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 31.8s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 25.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2951 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2951 mSDsluCounter, 443 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1437 mSDsCounter, 212 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3147 IncrementalHoareTripleChecker+Invalid, 3359 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 212 mSolverCounterUnsat, 92 mSDtfsCounter, 3147 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1696 GetRequests, 1391 SyntacticMatches, 12 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=800occurred in iteration=15, InterpolantAutomatonStates: 218, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 2225 NumberOfCodeBlocks, 2129 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2716 ConstructedInterpolants, 0 QuantifiedInterpolants, 5550 SizeOfPredicates, 46 NumberOfNonLiveVariables, 1997 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 33 InterpolantComputations, 10 PerfectInterpolantSequences, 309/597 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 - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:58:46,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...